On 1877 Jun 14 at UT 20:00 Harrison (USA?) noted on the western limb variations of brilliancy along the dark limb reembled light of a moving mirror held to a strong light against shadow of a dark ha.. Faint greenish-blue streamers resembling terr. aurora streamers. He thought they were same cause on the Moon. The Cameron 1978 catalog weight=3 and ID=192.
Plato 1919 Mar 05 UT 17:19:17:34 Observed by Selivanov, Tartakov (Russia, 4" refractor? x150) "Crater seemed to be an intense green in the background of Ashen light. Slightly to the left (east?) of it's centre a bright spot that sparkled with a phosphor. light, lighting up the whole crater so that its W. edge could be seen. Light did not change for the whole time." NASA catalog weight=4 (good). NASA catalog ID #371.
In 1949 May 31 UT02:37 LT Johnson observed a flash near the W limb of the Moon at the same latitude as Riccioli. No colour seen, the magnitude was 9-10, and duration < 0.5 sec. If there was any motion then it must have been < 24 km. He wasn't looking at it when it happened, so the motion aspect is uncertain. Indeed he was not absolutely certain if it was on the limb, or just inside or outside? The BAA/ALPO weight=1.
Mare Crisium 1972 Mar 18 UT 19:06-21:00 Obsevred by Prvost and Dorchain (Belgium, 3.5" reflector, 168x and 336x) "at 1906h Pruvust rep'ted 2 pts. moving from Aout to Prom. Olivium. Minutes later, Dorchain saw a new pt. Others saw nothing unusual fr. 1912-2100h (Fitton, Ash, Peters, Watkins,et al in England - but this was later than the event)" NASA catalog weight=2 (poor). NASA catalog ID #1325.
On 1973 May 06 at Ut 04:48 Bell (Lodi, CA, USA, 8.5" reflector x142) saw a slow brightness increase in Reiner to magnitude 6, when suddenly in the north east (IAU?) quadrant of the floor there was a very bright pin-point blue-white flash of magntude 2 for approximately 0.5seconds. After this the bright glowing of the crater diminished over about 15- 20 sec befofre returning to normal. The Cameron 1978 catalog ID=1366 and weight=3. The ALPO/BAA weight=3.
On 1972 Mar 18 at UT2015 E. Watkins, P. Hooks, D. Harris and R. Pieper (Conditions bad: a lot of mist and haze in the sky, 10" (x80 and x160) and 4.5" reflectors (x45, x150 and x225), observers were located in the UK) Aristarchus seen on the night side of the Moon - P. Hooke saw a red orange outburst from the ctater. When E. Watkins had a look, it just resembled a misty white area i.e. normal. Eyepieces were changed but it stayed misty white. Hooke was an inexperienced TLP observer at the time. Watkins did however notice some variation in brightness but put this down to atmospheric conditions. This is a BAA observation. ALPO/BAA weight=1.
On 1825 Jan 23 at UT 02:00 Engineering officers on board HMS Coronation (Gulf of Siam, naked eye or spy glass?) observed a star like point in Aristarchus crater. The Cameron 1978 catalog ID=105 and the weight=5. The ALPO/BAA weight=2.
On 1969 Jul 18 at UT 03:53-04:21 Tungside? (CA, USA, 8" reflector) saw a blue flash in Aristarchus crater. Apollo 11 watch. The Cameron 1978 catalog ID=1156 and weight=3. The ALPO/BAA weight=2.
On 1969 Jul 18 at UT 04:16 Harris (Torrence, CA, 12" reflector) saw Kraft brighten at this time. Apollo 11 watch. The Cameron 1978 catalog ID=1156 and weight=3. The ALPO/BAA weight=2.
On 1969 Jul 18 at UT 03:53-04:21 Kohlenberger (Fullerton, CA, 4.5" reflector), Harris and Bell (Torrence, CA, 12" reflector) saw a 65km long limb brightneing between Grimaldi and Aristarchus, a third of the way from Aristarchus. The Cameron 1978 catalog ID=1156 and weight=3. The ALPO/BAA weight=1.
On 1991 Apr 18 at UT 02:00-03:02 D. Spain (Fairdale, KY, USA, 3.5" reflector, S=6/10) could only see Aristarchus using averted viion. K. Herzog (Racine, WI, USA, 6" refractor, x38) observed Aristarchus to cycle through glowing and fading down to Earthshine brightness in a 3 minute cycle, but they could niot see Copernicus, Kepler or Tycho in Earthshine. W. Dembowski (USA) obtained photographs but these did not reveal anything unusual. The Cameron 2006 catalog ID=422 and the weight=1. The ALPO/BAA weight=1.
On 1881 May 04 UT 20:00 "Gamma" a psuedonym for an astronomer (Germany?) observed Aristarchus to be be a very bright 8th magnitude star with pulsations. The Cameron 1978 catalog ID=221 and the weight=3. The ALPO/BAA weight=2.
On 1969 May 21 at UT 03:40-04:25 Kohlenberger (Fullerton, CA, 12" reflector), Harris, Miller (Torrence, CA, 12" reflector), Bell and Calkins (Ojai, Duarts, CA, USA), Kelsey (West Covins, CA, Riverside, CA, USA) observed scintillations in Aristarchus - Cameron says independent observations?). Members of Astronet took part in this observation. Kelsey saw a brightening but not on the order of seconds as others reported. Cameron suspects an atmospheric effect and also comments that this was during the Apollo 10 watch. The Cameron 1978 catalog ID=1130 and weight=2. The ALPO/BAA weight=2.
On 1969 Jul 19 at UT 03:53-04:19 Harris (Torrence, CA, USA, 12.5" reflector), Bell (Duarte, CA, USA, 4.5" reflector), and Miller (Ojai, CA, USA). "Harris saw 20 brightenings or light flashes, lasting fr, 1/2 to 3s at 03:53:56 (1/2s), 03:54:19 (1s), 03:54:55 (2s), 03:55:06, 03:56:54, 03:56:56, 03:58:37, 03:59:58, 04:07:28, 04:15:00, 04:16:02, 04:16:45, 04:20:29, 04:21:14. First 4 were confirmed by Bell, Harris also saw 100 mi(160km) long limb brightening (blue) between Aris & Grimaldi, due W. of Aris., brighter than Aris. At 04:14 saw the brightening 1/2 way between Aris. & Grim. as pinkish or orange. Miller at 0417h saw a star-like pulse in W. (IAU?) rim of Grimaldi. (confirm. of Harris'04:16:45 obs. ? Apollo 11 watch)." The Cameron 1978 catalog ID=1161a and weight=3. The ALPO/BAA weight=3.
On 1969 Jul 19 at UT 03:53-04:19 Harris (Torrence, CA, USA, 12.5" reflector), Bell (Duarte, CA, USA, 4.5" reflector), and Miller (Ojai, CA, USA). "Harris saw 20 brightenings or light flashes, lasting fr, 1/2 to 3s at 03:53:56 (1/2s), 03:54:19 (1s), 03:54:55 (2s), 03:55:06, 03:56:54, 03:56:56, 03:58:37, 03:59:58, 04:07:28, 04:15:00, 04:16:02, 04:16:45, 04:20:29, 04:21:14. First 4 were confirmedby Bell, Harris also saw 100 mi(160km) long limb brightening (blue) between Aris & Grimaldi, due W. of Aris., brighter than Aris. At 04:14 saw the brightening 1/2 way between Aris. & Grim. as pinkish or orange. Miller at 0417h saw a star-like pulse in W. (IAU?) rim of Grimaldi. (confirm. of Harris'04:16:45 obs. ? Apollo 11 watch)." The Cameron 1978 catalog ID=1161a and weight=3. The ALPO/BAA weight=3.
Hipparchus 1972 Mar 19 UT 21:07-21:29 observed by Schnuckel (52.5N, 13.8E, 60mm refractor) "Two sudden white brightenings in the West wall approx 7 magnitude. First was at 21:07 UT and the second was at 21:29UT. Both lasted approximately 1 sec in duration." - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61
On 1877 Jun 15 at UT 20:00 Birt (England, UK) observed a bright spot east of Picard. The reason why this was regarded as a TLP, accoridng to Cameron was that it was supposed to be faint or invisible. The Cameron 1978 catalog ID=193 and the weight=3. The ALPO/BAA weight=3.
On 1965 Aug 02 at UT 03:57-03:58 Bornhurst (Monterey Park, CA, USA, 10" reflector, x240, S=5) observed some star-like flashes in Aristarchus in ashen light. The Cameron 1978 catalog ID=887 and the weight=3. The ALPO/BAA weight=2.
On 1903 Mar 03 at UT 18:30 Rey (Marseilles, France) observed a star- like point of light in the Aristarchus region, on the dark part of the Moon (indep. confirm?). The Cameron 1978 catalog ID=315 and the weight= 5. The ALPO/BAA weight=2.
Bright point seen near Plato. A much brighter one was near Aristarchus. Apparently seen by both Schroter and Bode. The Cameron 1978 catalog ID=43 and weight=5. The ALPO/BAA catalog weight=3.
Bright point 26" N of Aristarchus rim. Resembled one near Plato but less conspicuous. The was a confirmed observation by Schroter and Bode?
On 1988 Mar 23 at UT 01:15-01:30 M. Wisniewski (Chicago, IL, USA, S=F) observed that Aristarchus was the brightest (mag 5), and only feature visible in Earthshine. It had the appearance of a steady blue-white star like point. Darling (Sun Praire, WI, USA) though observed other features as well: Proclus, Theophilus, Cyrillus and Censorinus - all of which were normal. The cameron 2006 catalog ID=319 and the weight=0. The ALPO/BAA weight-1.
On 1877 Jun 16 at UT 20:00 Harrison (USA?) noted on the western limb variations of brilliancy along the dark limb reembled light of a moving mirror held to a strong light against shadow of a dark ha.. Faint greenish-blue streamers resembling terr. aurora streamers. He thought they were same cause on the Moon. The effect was brighter two days earlier. The Cameron 1978 catalog weight=3 and ID=192.
On 1969 May 22 at UT04:28-05:06 Harris (Tucson, AZ, USA, 21" reflector), Ricke (8" reflector), and Cameron (Greenbelt, MD, USA, 21" reflector, x40 and x250) observed "Brightenings & pulsations. 1st per. 0428-0440h(R&H); then 0500(R). 3rd per. 0506h(H). Pulsations intermittent & increase @ 1/2 mag. except 1 was 1-2 mag. greater. (atmosp. ?). Cameron at 0130-0330 did not see Aris. in 12-in refl. at 40x or 250x, & saw nothing abnormal. (Apollo 10 watch)". The Cameron 1978 catalog ID=1133 and weight=1. The ALPO/BAA weight=2.
Theophilus 1971 Mar 02 UT 20:30-22:50 Observed by Ringsdore (Stoneleigh, England, 15" reflector, x360, seeing=good) "Suspected TLP on c.p. 2 other obs. did not confirm. Orange- pink glow. Faded for 10 min then reappeared." NASA catalog weight=2. NASA catalog ID 1286. ALPO/BAA weight=1.
On 1982 Oct 22 at UT23:55 K. Marshall (Medellin, Columbia) found the NE cleft in Posidonius to be abnormally bright, much more so than the walls of the crater. The ALPO/BAA weight=1.
On 1982 Oct 22 at UT23:45-00:10 K. Marshall (Medellin, Columbia) found the W-NW rim of Proclus was both red and very bright. The brightness is normal, but as no similar colour effect was seen elsewhere on the Moon, this was regarded as a TLP. The Cameron 2006 catalog ID=187 and the weight=3. The ALPO/BAA weight=3.
On 1984 Sep 30 at UT17:30-18:45 P. Madej (Huddersfield, UK, 83x, seeing=I-II, transparency very good and no spurious colour) "Twilight Earthsine at 1732, 83x light-darker blue by 1800. Looked like a star of mag. 3-4 with no variations. Spot moved slightly from side to side, not connected with alignment or optical. Luminescence may have expanded and contracted, but not sure. Other regions in Earthsine not seen. (Mobberley) saw Earthshine with naked eye. Aris seen before clouds came. Earthsine > normal T=E. (Foley) took CED readings which confirm the brilliance of it. No other features could be measured in Earthshine."The Cameron 2006 catalog ID=250 and the weight=0. The ALPO/BAA weight=1.
On 2009 Mar 31 at UT 19:26-19:50 Cook M.C. (Mundesley, UK, 90mm Questar reflector, x130, seeing II-III, transparency poor to moderate). The crater had it's north-east to west wall illuminated and a central feature on the floor, faintly seen - both of these are normal. The crater itself though was much brighter in a red filter, bright in a wellow filter, but dull in a blue filter. Possible variation seen whilst using the red filter, but this may have been due to haze. All other features behaved normally. The ALPO/BAA weight=3.
Burg 1972 May 18 UT 20:50-21:45, 22:15-23:00 Observed by Moore (Selsey, England, 12.5" reflector, x350, S=3-4), and Fitton (Lancashire, England, 8.5" reflectpr, x200) "Suspected floor brightening at 2050h with a luminous strip to the SW. Persisted for sometime. Faded at 2110h & invis. at 2145h. Fitton from 2215h-2300h saw nothing unusual, (after event tho.)" NASA catalog weight=3. NASA catalog ID #1333. ALPO/BAA weight=1.
Bright spot seen. The Cameron 1978 catalog gives this TLP an ID No. of 36 and a weight of 1. The ALPO/BAA catalog weight is also 1.
Proclus 1969 Jul 20 UT 03:55-04:15 Observed by Gergoulis, Morley, Sevra, Skinner, and Naumann (Edinburg, TX, 17" reflector, x169) " Texas group got a blink (red, Trident MB) on NW wall. Varied extremely. Increased in brightness in red. Clouds stopped obs. 5 confirmed visualy. (moon nr. horizon, Apollo 11 watch. No blink if spurious?)." NASA catalog weight=3 (average). NASA catalog ID #1170.
On 1968 Jun 01 at UT 21:00? Kozyrev (Crimea?, Soviet Union) Gas luminescence seen in Aristarchus crater. The Cameron 1978 catalog ID=1075 and weight=3. The ALPO/BAA weight=3.
On 1965 Aug 03 at UT 04:18-04:24 Bornhurst (Monterey Park, CA, USA, 10" reflector, x240, S=F-G) and Leasure and Emanuel (Whittier, CA, USA) observed some star-like flashes in Aristarchus in ashen light (confirmed). The Cameron 1978 catalog ID=888 and the weight=5. The ALPO/BAA weight=4.
Bright point seen near Plato. A much brighter one was near Aristarchus. Apparently seen by both Schroter and Bode. The Cameron 1978 catalog ID=43 and weight=5. The ALPO/BAA catalog weight=3.
Bright point 26" N of Aristarchus rim. Resembled one near Plato but less conspicuous. The was a confirmed observation by Schroter and Bode?
On 1965 Oct 01 at 04:00UT an unknown observer saw a TLP (feature name not given in the Cameron catalog - nor a description or reference). The Cameron 1978 catalog ID=897 and weight=1. The ALPO/BAA weigh=1.
On 1969 Jul 20 at UT 0530-0540 Younger and Byl (Victoria, BC, Canada, 48" reflector) saw a fuzzy brightening near Aristarchus of less than 0.5 minute of arc diameter (Apollo 11 watch). The Cameron 1978 catalog ID=1171 and weight=4. The ALPO/BAA weight=2.
On 1962 Sep 05 at UT 00:48-00:55 Chalk (USA?) observed in the vicinity of Walther a faint point of light, near the terminator. Cameron suspects an illuminated peak in the dark. The Cameron 1978 catalog ID=767 and weight=1. The ALPO/BAA weight=1.
On 1865 Nov 24 at 20:00? UT Williams and others (England, UK, 4" telescope) saw in Earthshine that Carlini was had a distinct 8th magnitude star-like speck in it. The Cameron 1978 catalog ID=140 and the weight=3. The ALPO/BAA weight=3.
On 1969 May 23 at UT 03:58-04:17 Wald (Zurich, Switzerland), E. & L. Cross (Las Cruces, NM, USA, 6" reflector, x120, S=F, T=VG). "Crater pulsations (Wald). Variations suspected at 0318, 0320-25 by E. Cross, 0417-27 by E. & L. Cross saw non-periodic short var., sudden increases 1-2 mag. & sudden to slow, 1-30s decreases to normal 0441-0446. (confirm. ?Apollo 10 watch)". The Cameron 1978 catalog ID=1139 and the weight=5. The ALPO/BAA weight=4.
Hase 1970 Apr 13 UT 01:28 Observed by Dumas (Montreal, Canada) "Intermittent light on S.wall of crater (atm. ?) (Apollo 13 watch). NASA catalog weight=1 (very poor). NASA catalog ID #1244.
On 2009 Apr 01 at UT 20:00-20:30 C. Brook (PLymouth, UK, 5" refractor, x40 and x100, using red and blue gelatine Edmund Optics filters observed that a few bright areas in the centre of mare Crisium were brighter in red at the start of the observing session than in blue, although not at a higher magnification. The observation ended when seeing worsened. The ALPO/BAA weight=2.
Torricelli 2011 Dec 31 UT 16:39-17:00 R.Braga (Milan, Italy, 80mm refractor) found the north rim or Torricelli to be very bright at the start of the observing session but dimmed considerably at around 17:00UT. Observer not sure on the normal appearance of this crater. ALPO/BAA weight=2 followinf repeat illumination images in the 2021 Apr ALPO TLO..
On 1877 Jun 17 at UT 21:00? Harrison (USA?) observed a light point on the Earthlit side of the Moon. He also observed a luminous point that could not be identified (Cameron speculates that this could be a confirtmation of Denett's Bessel observation?). The Cameron 1978 catalog ID=195 and the weight=3. The ALPO/BAA weight=2.
Rabi Levi 1969 May 23 UT 05:28-05:35 Observed by Perez, Gay, Skinner, Floodine (Edinburgh, TX, USA, 17" reflector) "3 small craters in it, middle one had a blink (Trident MB --red) very bright & the NW crater of the 3 had a dimmer blink. A few bright flashes were seen vis. by 3 obs. without the image tube, lasting 15s. Clouded out at 0525h, (alt. of moon was very low--atm?, ? Apollo 10 watch)." NASA catalog weight=3 (average). NASA catalog ID #1140.
Noble (England?, seeing=fair) observed a badly defined white patch east of Picard. Cameron 1978 catalog ID=201 and weight=3. ALPO/BAA weight=2.
Bessel 1877 Jun 17 UT 22:30 Observed by Denett (England?, 2.75" reflector) "Tho't he could detect a minute pt. of light shining out of dark crater. (no high peaks in Bessel to catch light.)" NASA catalog weight=3 (average). NASA catalog ID #194. ALPO/BAA weight=3.
On 1965 Aug 04 at UT 04:02-04:04 Bornhurst (Monterey Park, CA, USA, 10" reflector, x240, S=F-G) observed some star-like flashes in Aristarchus in ashen light. The Cameron 1978 catalog ID=889 and the weight=3. The ALPO/BAA weight=2.
On 1965 Oct 02 at 04:00UT an unknown observer saw a TLP (feature name not given in the Cameron catalog - nor a description or reference). The Cameron 1978 catalog ID=898 and weight=1. The ALPO/BAA weigh=1.
Godin, Agrippa, Mare Crisium, and Webb's spot.... 1882 Apr 24 UT 21:30-22:00 Observed by Ridd (England?) "Shadow anomalies- strange appearance. (he often noticed appear. that could only be haze. Shadows blurred and oscillated. Shadows in Aristotles were steady. E. of Agrippa shadows were misty as the foggy which lifted & then became obscur. again. Intervals being 1o min. (not terr. atmos.). Shadows never became clear whole time of obs. Also saw a white spot NW of 5 on Nelson's map (Webb's spot). " NASA catalog weight=2. NASA catalog ID #231. ALPO/BAA weight=2.
Godin, Agrippa, Mare Crisium, and Webb's spot.... 1882 Apr 24 UT 21:30-22:00 Observed by Ridd (England?) "Shadow anomalies- strange appearance. (he often noticed appear. that could only be haze. Shadows blurred and oscillated. Shadows in Aristotles were steady. E. of Agrippa shadows were misty as the foggy which lifted & then became obscur. again. Intervals being 1o min. (not terr. atmos.). Shadows never became clear whole time of obs. Also saw a white spot NW of 5 on Nelson's map (Webb's spot). " NASA catalog weight=1. NASA catalog ID #231.ALPO/BAA weight=1.
Godin, Agrippa, Mare Crisium, and Webb's spot.... 1882 Apr 24 UT 21:30-22:00 Observed by Ridd (England?) "Shadow anomalies- strange appearance. (he often noticed appear. that could only be haze. Shadows blurred and oscillated. Shadows in Aristotles were steady. E. of Agrippa shadows were misty as the foggy which lifted & then became obscur. again. Intervals being 1o min. (not terr. atmos.). Shadows never became clear whole time of obs. Also saw a white spot NW of 5 on Nelson's map (Webb's spot). " NASA catalog weight=1. NASA catalog ID #231. ALPO/BAA weight=1.
Theophilus 1972 May 19 UT 23:48 Theophilus observed by Ruchatz (51N 10E, 60mm refractor, T=4, S=2) "Diminution of brightness of the S wall for a short time" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61.
On 1985 Jun 14 UT 21:16-21:40 Observed by A.C. Cook Frimley, UK, 30cm reflector, seeing IV, transparency moderate, very litle spectral dispersion noticed - Wratter 25 and 44a filters used) UT 21:16-21:19 Censorinus slightly brighter in red and more detail seen. Observed other features before and after this. Checked again UT21:31-21:40 - same appearance. Torricelli and Torricelli B in comparison looked normal with other craters of similar size. ALPO/BAA weight=1.
Proclus NW ray 2003 Sep 03 UTC 02:46-03:07 Observed by Haas (Las Cruces, NM, USA) "The curious reddish edge to the conspicuous bright ray running N2 from Proclus is seen again (x321, x366 (S=1-3, T=3.5- 2.5). It lies on the SW side of the ray, with no corresponding blue border on its NE edge. The effect persists as the Moon drifts across the whole eyepiece field. However at 03:46 (x202) the coloured edge is not recognized now, but perhaps only because of worse conditions (S=3, T=2) 12.5" Newtonian reflector used." The ALPO/BAA weight=3.
On 2010 Apr 20 some time between UT 22:00 and 23:00 I. Bryukhanov (Minsk, Zeiss Refractor at the Minsk planetarium) observed an orange-brown tint a little to the west of Zollner and Kant craters. Apparently images were obtained. ALPO/BAA weight=1.
Sabine 1967 Sep 11 UT 00:32,00:45 Observers: Jean at al. (27 obs., 21 telescopes, Montreal, Canada, 3-6" refractors, reflectors) "A black, rectangular-shaped cloud vis. in M.Tranquill, moving W-E (IAU ?) & dissipated nr. term., surrounded by viol. colour. Bright yellow flash at 00:45, (obs. in response to request to obs. impact of Surveyor V at 0046) NASA catalog weight=3. NASA catalog ID #1043. ALPO/BAA weight=2.
Agrippa 1961 Oct 17 UTC 00:32-00:52 Observed by Bartlett (Baltimore, MD, USA) described in NASA catalog as: "Shadow of c.p. medium gray, compared with black wall of shadow" 5" reflector x180. NASA catalog weight=4 (high)
Ptolemeus 1970 Apr 14 UT 00:45-01:30 Observed by Nelson Travnik and Sergio Vianna (Matias Barbosa, Minas Gerais, Brazil, 4" refractor, x250, x400, - observing onditions very good, Kodak Wratten 15 an d 23 filters used) "A kind of glimmering mist lifted and wafted inside the shady hollow of the crat er (Apollo 13 watch)" NASA catalog weight=3 NASA catalog ID #1248. ALPO/BAA weight=1.
Proclus 1972 Mar 22 UT 19:50-21:55 Observed by Jewitt (Middlesex, England, 6" reflector x150, S=7, T=4), Beddoes (England), and Moore (Selsey, England, 12.5" reflector, x250, x460, S=E, S=F) "At 1905h noted c.p. was invis. under all magnifications. At 2050h saw minute star-like flash @ 0.5s duration, followed by another 10s later, & another one 10s after that. Occurred on N. crater floor. Proc. C was vis. Was using blink device. Beddoe saw nothing unusual from 1850-1900h (prior to event). Moore alerted, saw nothing unusual from 2100h on (after flash. c.p. variation similar to rep'ts by Bartlett e.g. ID=1309." NASA catalog weight=2. NASA catalog ID 1327. ALPO/BAA weight=1.
Theophilus 1972 May 20 UTC 19:10-19:59 Observed by Haiduk (13.25E, 52.5N, 75mm refractor) "Well visible brihtening on the SW wall" S=2, T= 3 Ref: Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61.
SE of Ross D 1969 May 24 UT 05:06-05:20 Observed by Harris (Tucson, AZ, USA, 21" reflector, S=F-P) "Multiple albedo changes, 2 bright areas vis. at 05:06, reduced at 0508h Whittier, CA, USA, 19" refractor?) NASA catalog weight=0 (very unreliable). NASA catalog ID #874. However a letter by Harris states: Variable transparency - colourless bright area SE of Ross D with variable condensation. ALPO/BAA weight=1.
On 1991 Apr 22 at UT 01:10-01:22 D. Darling (Sun Praire, WI, USA, 12.5", x99, seeing=7/10) observed that Piazzi-Smyth was bright in red light but fuzzy in blue light. The Cameron 2006 catalog ID=424 and the weight=3. The ALPO/BAA weight=3.
On 1993 Mar 30 at UT 19:30 an unknown British observer (Reading, UK) noted that the crater at the end of the Alpine valley looked unusual. However M. Cook (Frimley, UK) also observed the feature but found nothing unusual. The Cameron 2006 catalog ID=457 and weight=0. The ALPO/BAA weight=1.
On 1993 Mar 30 at UT19:35-21:15 J. Knott (England, UK, 8.5" reflector, x180 and x216, seeing=II and Transparency=good) observed at 19:35 the central peak of Alphonsus appeared to be extra bright although was normal later, however the observer suspects that this was a contrast related and was not confident to send out a TLP alert. The Cameron 2006 catalog ID=458a and 458b and weights=0. The ALPO/BAA weight=1.
Torricelli B 2002 Oct 14 UT 02:58-03:43 Observed by Gray (Winnemucca, NV, USA, 152mm refractor x114, x305, seeing Antoniadi III, transparency good) "I was out this morning (2:58-3:43 UT, October 14, 2002) observing Torricelli B. At 3:17 UT the west sunlit wall of the crater brightened from an intensity (Elger Scale) of 5.0 to 9.0. In actual terms it went from slightly less bright than the walls of Picard to as bright as the sunlit west wall of Dionysius. This was observed at 114x in white light, where all three craters were in the field of view simultaneously. This event lasted less than a minute and no comparable brightening in Dionysius or Picard was seen. The wall of Torricelli B returned to 5.0 in brightness. I continued to observe Torricelli B in white light until 3:43 UT, but the brightness remained at 5.0. Before the brightening I tried blinking Torricelli with the following combinations of filters: Wratten Red 25 and Blue 38A, Red 25 and Blue 80, and Red 25 and Schott BG38 (Blue Green). Nothing showed up more prominently in any combination except the Red 25-Blue 38A combination, where Torricelli B became invisible in the Blue, probably because of the filter density. Both the Blue 80 and Schott BG 38 seemed closer in density to the Red 25 than the Blue 38A is. I could not see any details inside Torricelli B during this session, including the bright spot on the NE rim." The ALPO/BAA weight=3.
Linne 1866 Dec 14 UT 20:00? Observed by Schmidt? (Athens, Greece?, 7" refractor?) "Seen as a white spot, had been a fine black spot before as seen by Schmidt. (Also Buckingham in Dec. 1866; also D 16,25th,27th, -- not LTP?" NASA catalog weight=0 (probably not a TLP. NASA catalog ID 146.
On 1991 Apr 22 at UT 02:03-02:14 D. Darling (Sun Praire, WI, USA, 12.5", x99, seeing 7/10) found, using a red and blue Moonblink device that Atlas crater gave a blink, the dark spots inside the crater have a dark nucleus in the blue filter. This effect was not detected earlier that night. The Cameron 2006 catalog then says "Atlas normal". The Cameron 2006 catalog ID=424 and the weight=3. The ALPO/BAA weight=2.
Ptolemeus 2020 Jul 27 UT 23:00 N. Travnik (Brazil) observed visually for 2nd time ever (first seen back in 1970), an effect on the floor of this crater at local lunar sunrise: "kind of glimmering mist lifted and wafted inside the shady hollow of the crater". Almost certainly this is a combination of atmopsheric seeing on the narrow shadow spires, but we would like observers to look at this visually or obtain time sequence images to try to replicate this effect. This report is assigned an ALPO/BAA weight of 1 for now.
Atlas 1973 Apr 10 UT 18:37-19:49 Observed by Theiss (51N, 9.67E, 75mm refractor, T=2, S=3) "N. wall of Atlas was yellow-green, several magnifications tested with the same results" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61
On 2009 Apr 02 at UT 21:45-22:05 C. Brook (Plymouth, UK, 5" refractor, x40 and x100, using red and blue gelatine Edmund Optics filters (rose No. 47 and blue No. 80), transparency poor due to thick haze. seeing was excellent) observed that that the rays that crossed Mare Cisrium from Proclus were brighter in red light than in blue. A similar effect was also observed, to a lesser extent south of the Mare. Non-mare Crisium rays from Proclus did not have this effect. The TLP was not seen at the higher magnification of x100. The ALPO/BAA weight=2.
On 1978 Nov 08 at UT03:00 D. Darling (Sun Praire, WI, USA, 12.5" reflector, x95, seeing 8/10) saw near Beer and Timocharis (11W, 30N) a bright flash inside the dark area. It appeared like a diamond twinkling in sunlight and was somewhat dazzling to the eyes. Cameron wonders in this was a meteor? The Cameron 2005 TLP catalog ID=39 and weight=2. This is an ALPO observation. The ALPO/BAA weight is 3.
Piton 1960 Dec 26 ? UT 00:00? Observed by Schneller (Cleveland, OH, USA, 8" Reflector, x53), "Red obscuration; less intense than Nov. (date not given, but discussion suggests near SR, therefore Dec 28th most likely date -- ancill. data given for 28th)." NASA catalog weight=3 (average). NASA catalog ID #732.
Mare Vaporum 1969 Apr 24 UT 19:34 Observed by Bentley (England, 8" reflector, x320, S=E) "NW part of mare obscured for 4 min., gradually thinning." NASA catalog weight=3. NASA catalog ID No. 1123. ALPO/BAA weight=2.
Large plume-like diffuse cloud over central peak, very large compared to central peak (@ approx 30km diameter) with intensity much different from other parts. Brightness between walls and shadowed floor. Would take 3 minutes to collapse, so continuously fed. 13-14 days later, at SS, central peak was normal. Kuiper took photos after Kozyrev's observations, but saw nothing abnormal. Drawing. Haas saw nothing in 12inch reflector at the time. Cameron 1978 catalog TLP ID=705 and weight=4. ALPO/BAA weight=2.
Aristillus 1973 Apr 10 UT 20:18-20:24 Observed by Pasternak (53.33N, 7.5E, 75mm refractor, T=3, S=3) "Faint reddish area at the SE wall of Aristillus" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61.
Alphonsus 1966 Jun 26 UT 04:30-04:40 Observed visually by D.Harris and E.Arriola (Whittier, CA, USA, 19" reflector x146, and spectrum, S=4, T=1-0) "Absorp. spectrum (visual) of c.p. band at 475+/-5nm (1st est.); 2nd est. at 485+/-5nm. Band degraded towards the viol. Band nr.Hydrogen Beta. as if abnormally broadened. So sign of anything unusual visually in central peak in white light. Absorption appeared only on C.P., not over walls. Calibration corrections put band at 491+/-4nm" NASA catalog weight=5. NASA catalog ID #948. ALPO/BAA weight=5.
Near archimedes 2001 Sep 25 UT 08:30 Observed by Try (Whangarei, New Zealand, 4" f/10 reflector) "observed two possible L.T.Ps. on the edge of the terminator near the crater Archimedes. They appeared to be two bright points of light about the size of Mount Piton. They seem to form a triangle with Mount Piton. He observed them for two hours and they were still visible when he ended his observing session. He was observing with a 4" f10 reflector. Then Moon age was 7.9 days old and the colongitude was 4.83. submitted a drawing showing the area where the lights were observed." ALPO report. ALPO/BAA weight=1.
Alphonsus 1960 Jan 06 UT 18:00 Observed by Warner and Hole (London, England, 18" refractor and 24" reflector, Moon blink used) "Red spot. Hole saw this on several other occasions(indep. confirm)." NASA catalog weight=5 (very good). NASA catalog ID 727.
Jansen 1966 Aug 24 UT 04:15-04:25 Observed by deBerard (Flossmoor, IL, USA, 6" reflector, x360, S=V, moonblink used) "Bright green glow -- using red & blue filters & green polariz. filter." NASA catalog weight= 3 (average). NASA catalog ID #965.
Schroter 1839 Jul 19 UT 22:00? Observed by Gruihuisen (Munich, Germany) "Dark mist" NASA catalog weight=4 (high). NASA catalog ID #119. ALPO/BAA weight=3.
Alpetragius 1958 Nov 19 UT 22:00-22:05 Observed by Stein (Newark, New Jersey, USA, 4" refractor) "Shadow anomaly. Portion of shadow vanished, replaced by lighter shade. At 22:05 gradually darkened & was normal in 20 sec." NASA catalog weight=3. NASA catalog ID #704. ALPO/BAA weight=2.
Agrippa 1961 Oct 18 UT 00:43-01:00 Observed by Bartlett (Baltimore, MD, USA, 5" reflector x180, S=2-3, T=5) "Shadow of c.p. remained grayish, wall shad. normal black. Not due to seeing as wall & landslide shad. not affected. Not caused by refl. sunlight because other similar obs. showed different aspects." NASA catalog weight=4. ALPO/BAA weight=2. NASA catalog ID #750.
Eratosthenes 1961 Oct 18 UT 01:05-01:25 Observed by Bartlett (Baltimore, MD, USA, 5" reflector x180, S=P, T=G) "Fluorescent violet on inner W(IAU) wall (reported as bright spot in MB). NASA catalog weight=4 (high). NASA catalog ID #751.
On 1969 May 25 at UT03:53-05:47 Ricke (Tucson, AZ, USA, 8" reflector), Leasure (Tucson, AZ, USA), Freuland (Tucson, AZ, USA), Sheridan (Wyoming, USA), and Harris, Tucson, AZ, USA). "At 0353h saw brightening of 1s intermittent pulsations of 1 mag., confirmed by Leasure at 0357; 0400 Freuland saw brightening. At 0514h Ricke, 1 mag, at 0515h-0530 -- low amp. variations seen by Ricke & Harris. At 0525h Sheridan saw bright. & puls. Harris at 0546h-47h saw 2 brightenings in crater. (Apollo 10 watch seen in dark at gibbous phase!). (indep. confirmation?)". The Cameron 1978 catalog ID=1146 and weight=5. The ALPO/BAA weight=4.
Ross D 1969 May 25 UT 04:34-04:38 Observed by Cross (Las Cruces, NM, USA, 6" f/17 refractor) "Bright spot adjacent to NE segment of crater, 1.5-2" at greatest extent & much brighter than rim of Ross D. Fuzziness here & extensive obscur. of detail E. of Ross D (Apollo 10 watch)" NASA catalog weight=3, NASA catalog ID #1147. ALPO/BAA weight=3.
Eratosthenes 1970 Apr 15 UTC 01:25-01:42 Observed by daSilva (Brazil, 10" reflector x200 & 20" refractor x224, Seeing=good, Transparency=Good). "Vis. blink? on lower c.p. Ilum. walls were yellowish-white C.p. diamond brightness with a pt. flashing. Turbulent atms. impeded confirm. Other features were normal (Apollo 13 watch. S-IVB impact at 0109h, took 70 s to reach A12 Alsep." NASA catalog weight=3. NASA catalog ID #1252. ALPO/BAA weight=3.
1972 Mar 23 UT 19:24 Observer: Rudolphi (48.58N, 10E, 60mm refractor, Transparency=2) "Pure white very bright event" Ref: Hilbrecht & Kuveler - Earth, Moon & Planets (30) pp53-61.
On 1980 Oct 17 at UT18:40-19:10 G. Blair (Weir, Renfrewshire, Scotland, UK, 22cm reflector, seeing II, transparency excellent, no spurious colour) noticed at 18:40UT that the bright central peak of Alphonsus was elongated. At 18:41UT, at higher power, the central peak separated from a bright point of light, intensity about that of a 6th magnitude star. at 18:43UT a filter check was made of the suspect point and surrounding regions - slightly nrighter in red. At 18:50UT intensity of bright point reduced to equivalent of 4th magnitude star. Noted that Earthshine was the brightest that he had ever seen it. At 19:03 UT losing the Moon behind a chimney. UT 19:10 brief appearance, bright point still seen at 4th magnitude. 19:27UT the Moon disappears again. 20:15UT reappearance of the Moon and Alphonsus appeared normal. The ALPO/BAA weight=2. This is a BAA Lunar section observation.
Plato 1952 Apr 03 UT 20:45-21:30 Observed by Wilkins and Moore (Meudon, France, 33" x460) whilst checking up on a 1923 28" refractor sketch by W.H. Stevenson's, thry failed to detect a prominent floor craterlet (featured in the 1923 sketch) just inside the W wall. They suspected an obscuration. Interestingly the whole floor was was reported to be lacking in detail many hours later as observed by Cragg in the USA. NASA catalog weight=5. NASA catalog TLP ID No. #550. ALPO/BAA weight=2.
Apr 25 UT 20:20 Observed by Bentley (England, 8" rteflector x320, S=VG) "Flashing star-like pts, in area beyond the terminator, (atmosphere?)" NASA catalog weight=1. NASA catalog ID #1124. ALPO/BAA weight=1.
Plato 1970 Apr 15 UT 05:38-05:40,05:51-05:53 Observed by Cross (Las Cruces, NM, USA, 108mm Schiefspiegler or 152mm refractor, S=6, T=5.5=VG). The observer noted a lack of detail inside the crater floor, despite visibility of detail outside the crater. Spectra were normal for color. (obs. similar to historic reports. Apollo 13 watch?)" NASA catalog weight=1 and catalog ID #1253. ALPO/BAA weight=2.
On 1989 Jun 12 at UT 21:18-22:25 G. North (Herstmonceaux, UK, Coude, seeing=V) noted at 21:18UT that Torricelli B was "barely visible"- possibly this was seeing related. M. Cook (Frimley, UK, 8" reflector, seeing=IV) found Toricelli B to be ëxtremely dull - impossible to judge shadows on floor in contrast to Cens." Holmes (Rockdale, England, UK, 8" reflector, seeing=II-III) at UT21:30 also found Toricelli B difficult to find at magnifications less than 200x. Cameron comments that "Dulling is common on it at high Sun but illumination doesn't seem to be the cause or related". The Cameron 2006 catalog ID=365 and weight=5. The ALPO/BAA weight=2.
Alphonsus 1958 Dec 19 UT 20:00? Observed by Wilkins (Kent, UK) described in the NASA catalog as: "Reddish patch on central peak" 15" reflector used. NASA catalog weight=4. NASA catalof TLP ID No. 711. ALPO/BAA weight=3.
La Hire 1922 Nov 28 UT 22:00? Observer Wilkins (England). NASA catalog states: "Shadow cut thru by white streak (real LTP?. Pickering's atlas shows same phase & col. & shadow is all dark; elong. in peaks are N-S not E-W)" 15" reflectore used. NASA Catalog assigns a weight of 4. NASA catalog TLP ID No. # 388. ALPO/BAA weight=2.
Manilius 1972 May 22 UTC 20:10-20:40 observed by Kern (48deg 45'N, 8deg 45'E, 60mm refractor) "The SW inner wall became brighter at times" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61.
Bullialdus 1980 Oct 18 UT 20:15-20:25 Observed bt Amery (Reading, England, 10" reflector) "Colour blink reaction in English Moon Blink Device" BAA Lunar Section report. Cameron suggsets that this might be a permanent coloured blink area. Cameron 2006 catalog ID=115 and weight=3. ALPO/BAA weight=3.
Fracastorius 1980 Oct 18 UT 17:55-18:15 Observed by Robinson (Devon, England, 260mm Newtonian, Seeing III, Transparency poor) "Colour blink reaction in English Moon Blink Device - inner wall brighter in red than in blue light, despite other features appearing normal. BAA Lunar Section report. Cameron 2006 catalog ID=115 and weight=3. ALPO/BAA weight=2.
Manilius 1980 Oct 18 UT 17:55-18:15 Observed bt Robinson (Devon, England, 260mm Newtonian, Seeing III, Transparency poor) "Colour blink reaction in English Moon Blink Device - crater surrounds bright in red and dull in blue light" BAA Lunar Section report. Cameron 2006 catalog ID=115 and weight=3. ALPO/BAA weight=3.
Plato 1980 Oct 18 UT 17:55-18:15 Observed bt Robinson (Devon, England, 260mm Newtonian, Seeing III, Transparency poor) "Colour blink reaction in English Moon Blink Device - floor patches easily seen in red, not so well seen in blue" BAA Lunar Section report. Cameron 2006 catalog ID=115 and weight=3. ALPO/BAA weight=2.
On 1992 May 11 at UT 20:20-21:00 R. Amendsensvej (Esbjerj, Denmark, 10" reflector, x333) noted that Copernicus had "almost no disturbance. Flash was seen between 2236:30 & 2236:40. Thus 10S". The Cameron 1978 catalog ID=444 and weight=1. The ALPO/BAA weight=2.
On 2009 Apr 04 at UT 20:30-20:45 C. Brook (Plymouth, UK) observed a slight pinkish mottling on the floor of Plato. The effect was no longer visible after 20:45UT. A telephone alert was put out to M. Cook and G. North. The former saw no colour, but this was after the event finished. The latter observer reported cloudy conditions. A.Cook was probably observing at the same time as C. Brook, via a couple of remotely controlled telescopes in Aberystwyth. The results (time lapse imagery through narrow band filters) will be examined at a later date.
Plato 1972 Mar 24/25 UT 20:38-00:00 Observed by M.Burton (UK, 13.5" reflector, seeing IV-V, Transparency Fair, x180) UT20:38- 20:45 floor was darker in a red filter than in a blue. UT20:47- 20:56 JS Burgess (seeing 2/5, x200, with and without filters) found everything normal (with and without filters). UT20:00- 20:07 and 21:30-21:35 A.J. Beddoes found everything normal (with and without filters). However at 23:10 L.Fitton suspected that the E (IAU?) floor of Plato had a red-brown cast, but could not be quite sure. UT23:54-00:00 M.Burton, detected the floor was darker in red than in blue light. Burton did not detect any colour without the use of filters on either of the two occasions that he detecetd a blink. In view of the fact that two observers did not detect anything, albeit not concurrently with the TLP reports, this TLP is being given an ALPO/BAA weight of 1.
On 1882 Feb 27 at UT 18:30-19:30 an unknown observer reported an unusual shadow in Eudoxus. Apparently the shadow was seen to be normal on 1882 Feb 25 at UT 20:30-20:45. The Cameron 1978 catalog ID=228 and weight=3. Reference: Sirius Vol 15, 167, 1882. The ALPO/BAA weight=2.
Eimmart 1913 Apr 14 UT 01:00 Observed by Pickering (Mandeville, Jamaica, 6.5" reflector) "By this date crater was clear & at an albedo ~5?. Drawings compare Jan. 16 & Aug.9, 1913." NASA catalog weight=3 (average). NASA catalog ID #344.
On 2009 Apr 04 at UT 21:40 M.C Cook (Mundesley, UK) after receiving a telephone alert call, examined Plato crater. Although she did not report C. Brook's slight mottled pink on the floor of Plato, she did report through that the floor patches looked darker than normal, especially in blue light and in red they were not visible at all. In white light they were darker than normal. A.C. Cook was probably observing at the same time via a couple of remotely controlled telescopes in Aberystwyth. The results (time lapse imagery through narrow band filters) will be examined at a later date. Note that this observation was made after C. Brook said that he could no longer see his TLP. Therefore this constitutes a different TLP as there had been a gap of 1 hour since the last TLP report.
Agrippa 1966 Aug 26 UTC 01:52-02:24 Observer: Bartlett (Baltimore, MD, USA, 5" reflector x437) "Shadow of C.p. was grayish, wall shad. was normal black, C.p.itself barely disting. from floor" S=5, T=3. NASA catalog weight=4 (high). NASA catalog ID #966. ALPO/BAA weight=1.
In 1962 Sep 09 at UT 01:42-02:00 Bartlett (Baltimore, MD, USA, 5" reflector, x180, S=5-4, T=3) observed in Agrippa the shadow of the central peak to be grayish, not much darker than the floor, estimated at 3deg bright, whereas on 1962 Jul 12, at col 28deg, in the 5" telescope the dhadow was anormal black and sharply defined against the floor which was 3 deg bright. The Cameron 1978 catalog ID=768 and the weight=4. The ALPO/BAA weight=2.
Shadow of central peak barely distinguishable. Residual wall shadow normal black. Landslip very conspicuous, 10 deg bright. Cameron 1978 catalog TLP ID=1040 and weight=4. Cameron 2006 Catalog Extension ID=12 and weight=4. ALPO/BAA weight=2.
On 1986 May 18 at UT 20:45-22:25 M. Mobberley (Suffolk, UK, seeing II- IV) found that the central craterlet of Plato was an ëasily seen "white splodge" although it was quite difficult to see when imaged with video. Foley and Cameron comment on IR sensitivity of the CCD camera used. The Cameron 2006 catalog ID=285 and the weight=1. The ALPO/BAA weight=1.
On 1974 Mar 3 at UT 19:06-20:20 J-H Robinson (Teighmouth, Devon, UK, 10" refractor, x200, seeing=poor) got a Moon Blink reaction on the South east wall of Plato, adjacent to the rim shadow and alerted the BAA TLP network. Ford reported a negtive result at 19:35UT, although Robinson was still getting a blink reaction at 19:40UT, albeit fainter, red at times. Findlay at 19:43-19:52 and 20:00-20:05 saw nothing unusual. Robinson at 19:56UT no longer saw a blink, but it returned at 20:05UT. Light in bothred and blue filters. Not steady, but coming and going and gone at 20:09UT. Moore at 19:59-21:00, kennedy at 20:12-20:30, Taylor at 20:48-21:03 and Fitton at 20:05UT all got negative results. The latter time coincides with Robinson's second blink reaction. Cameron 1978 catalog ID=1390 and weight=1. ALPO/BAA weight=1.
On 1988 Jul 24 D. Darling (Sun Praire, WI, USA, 12" reflector, x150, S=7/10, T=3) observed the following in Proclus: "At 0213 the previously observed gray area was 1/3 of July 22 and V shaped and fanned out across the floor. Could see hint of knot seen before. Craters named in 7/23/88 (#319) were all normal this time too". Is it possible that this report refers to the crater "Gray" rather than "Proclus" as the column field suggests in the Cameron catalog? The Cameron 1978 catalog ID=333 and weight=5. The ALPO/BAA catalog weight=2.
On 1981 Sep 08 at UT 21:28-21:34 P. Madej (Huddersfield, UK, seeing III-IV and trasnaparency good) observed a light orange transparent cloud extending from the north east inner corner across over the floor of Plato. Camero comments that this report was confirmed by 3 othr observers. The shape of this clud varied. The Cameron 2006 catalog ID= 153 and weight=4. The ALPO/BAA weight=3.
Parry 1974 April 03 UT 01:10-01:45 Observed by Porter (Narragansett, Rhode Island, USA, 6" reflector, S=F, T=2) "Darkening of floor & brightening of central crater. Pulsations for 1 min. Albedo of LTP=2 (fl.), 6.5 (c.p.). Normal floor=3?. Floor seemed darker than earlier & approached surrounding plain(=2) while N-S streak seemed more conspicuous. Pulsations same freq. as star excursions so prob. due to terr. atm. aberr. Streak most conspicuous at 0145h" NASA catalog weight=2 (poor). NASA catalog ID #1391.
On 1989 Jul 14 at UT 03:28 D. Darling (Sun Praire, WI, USA) found a darkening in the crater Proclus, but the shadow seen by Cook and Moore, from a few hours earlier was not seen. The Cameron 2006 catalog ID=371 and the weight=2. The ALPO/BAA weight=1.
In 1875 Jul 14 at 02:00UT Davidson and Loftus (HMS Coronation, Gulf of Siam Champion Bay, long 99deg, using naked eye and binoculars) observed "a luminous projections from upper (N?) limb. Phenom. was absent there on next nite, but a smaller 1 at another pt. (not an LTP? - but many such repts)". The Cameron 1978 catalog ID= and weight=5. The ALPO/BAA weight=3.
Archimedes 1979 Oct 01 UT 20:57-21:00 Observed by Cook (Frimley, UK, 13mm Monocentric + Barlow eyepiece, Seeing IV, transparency: thin cloud) "Red seen on east, blue seen on west - almost certainly spurious colour".
Bullialdus 1979 Oct 01 UT 21:04-21:07 Observed by Cook (Frimley, UK, 13mm Monocentric + Barlow eyepiece, Seeing IV, transparency: thin cloud) "Red seen on east, blue seen on west - almost certainly spurious colour". ALPO/BAA weight=1.
Alphonsus 1959 Feb 18 UT 21:00? Observed by hole (Brighton, England, 24" reflector) "Red patch (Moore in Survey of the Moon says Jan. '59). Moore says, Warner, in Eng. saw it bright red in an 18-in refr. Hedervari & Botha in Hungary saw red patch & several in US (indep. confirm. ?)" NASA catalog weight=5. NASA catalog ID #714. ALPO/BAA weight=5.
On 1991 Apr 25 at UT 02:14-02:37 UT D. Darling (Sun Praire, WI, USA, 12.5" reflector, x64, S=7/10, T=4) found that after sketching Gassendi, that at 02:14 the central peak was very bright in red light, and barely detectable in blue light. By 02:26UT a strong blink was noticed on the NW rim, being very bright in the red filter. Effect still present at 02:32UT. The effect was not seen earlier at 01:57UT. The Cameron 2006 catalog ID=425 and weight=4. The ALPO/BAA weight=3.
On 1991 Apr 25 at UT 02:34-02:37 UT D. Darling (Sun Praire, WI, USA, 12.5" reflector, x64) found that Atlas had spots in it that were "more intense in blue". No blinks were detected elsewhere on the Moon apart from Gassendi. The Cameron 2006 catalog ID=425 and weight=4. The ALPO/BAA weight=2.
On 1991 Feb 25 at UT 01:26-01:49 D. Darling (Sun Praire, WI, USA, 12.5" reflector, x248, seeing=10/1, transparency=good) found Gassendi's western rim to be bright in red and diffuse in blue light. A sketch was provided. The Cameron 2006 catalog ID=420 and the weight=4. The ALPO/BAA weight=2.
On 1979 Dec 29 at UT 17:45-18:20 Crick (Merchtem, Belgium, 6" reflector, x140, seeing=III) found a violet spot in the NW inner wall. The floor was obscured of detail on the northern half. All other regions studied appeared normal. Observer unsure if this was a TLP or spurious colour. Cameron 2006 catalog ID=80 and weight=3. ALPO/BAA weight=3.
On 1963 Nov 27 at UT 03:00 Olivarez (New Jersey?, USA, 17" reflector) and Fisher (Colfax, CA, 8" reflector, x300) observed a red glow in Anaximander in the dark part of the Moon. The Cameron 1978 catalog ID= 784 and weight=5. The ALPO/BAA weight=3.
On 1963 Nov 27 at UT 03:00 Olivarez (New Jersey?, USA, 17" reflector) observed a red glow in Aristarchus in the dark part of the Moon. The Cameron 1978 catalog ID= 784 and weight=5. The ALPO/BAA weight=3.
Gassendi 1979 Dec 29 UTC 20:09-22:04 - Observer: Cook (Frimley, Surrey, UK) "Colour seen - almost certainly spurious colour and not a TLP". ALPO/BAA weight=1.
On 1991 May 24 at UT 20:00? Romualdo Lourencon (Sao Paulo, Brazil, 60mm refractor, seeing=III) detected a circular cloud in Jansen B and H? (Gazateer report says F and K). "The crater of the event 100km diam. compared to Copernicus, dark with crescent obscured region below it. Was S of Jansen. A circular depression there was before LTP in darkness. Wonders if circ. depr. was shadow of cloud? The Cameron 2006 catalog ID=428a and the weight=3. The ALPO/BAA weight=1.
Alphonsus - 1966 Aug 27 UTC 06:05-06:25 observed by Haris, Eastman, Bornhusrt, Cameron, astronet observers (Tucson, AZ, USA - 21" reflector x200) and by Corralitos observatory (Organ Pass, NM, USA, 24" reflector) "W. dark-haloed area varying & the small dark-haloed (40%) area also varying. Seen by others present incl. the author (WBC) who attributes the variations to "seeing". Not confirmed by Corralitos MB." NASA catalog weight=1 (low). NASA catalog ID=968.
Ross D area - 1966 Aug 27 UT 06:06-06:25 observed by Harris, Eastman, Bornhusrt, Cameron, astronet observers (Tucson, AZ, USA - 21" reflector x200) and by Corralitos observatory (Organ Pass, NM, USA, 24" reflector) "Obscuration on E. wall, bright area E. of crater at its brightest. (I (WSC) was present at obs. but did not note anything not attributable to bad seeing, but am not familiar with the area in normal aspect. Others present did not see anything unusual, but Bornhurst & Eastman confirmed). Corralitos Obs. found due to changing light conditions. NASA catalog weight=1. NASA catalog ID=967. ALPO/BAA weight=1.
On 1988 Jul 25 at UT03:15 H. Davis (Madison, WI, USA) stated that Proclus was normal apart from a "slightly darker area in SW (Ast) SE (IUE) corner." The Cameron 2006 catalog ID=334 and the weight=0. The ALPO/BAA weight=1.
Aristarchus 1969 Jul 26 UT 02:15-03:00 Observed by Jose L. da Silva (Rio de Janeiro, Brazil, 13" refractor) "Unusual brightness whole time in center of W. inner slope; rest of crater & Herodotus appeared normal. SW to NW inner slope had pronounced brightness. Aris. still in dark! Apollo 11 watch)." NASA catalog weight=3. NASA catalog ID=1186. ALPO/BAA weight=1.
Aristarchus 1969 Jul 26 UT 02:30-03:00 Observed by Mauro Migon (19" refractor), Julio Nogueira (10" refractor), Wairy Cardoso (13" refractor) all from Rio de Janeiro, Brazil "Crater was gray-bluish, different from any other region & unusually bright. Cardoso saw brightening, used blue, red, green & neutral filters. Apollo 11 watch, Jose da Silva says obs. no good, obs. was inexperienced. However it is similar to many other obs. with much experience)." NASA catalog weight=2. NASA catalog ID No. 1187. ALPO/BAA weight=1.
On 1983 Jul 21 at UT 21:02-23:18 P.W. Foley (Kent, UK, 12" reflector, seeing=III) found the region around the cleft on the souther rim to be out of focus - however atmospheric conditions were turbulent until 23:18UT. An unsual dark triangular region (long base against rim) was seen to extend from the inner rim at 12 o'clock onto the floor for 13- 16km. The crater had lots of detail elsewhere. M. Cook (Frimley, UK) found the south east to soth west to be obscured again, but not as badly as she had seen on the 20th July. J. Cook (Frimley, UK) found the dark region had 2 white bands on the side and the south west wall was blurred like it was on the 20th July - this time tough colour was not present. There were also two light patches on the floor. Mosely (Coventry, UK) observed the south wall at x120 and found the wall out of focus at the 11 o'clock location. Through a yellow filter he saw a "white mistiness: on the top of the southern rim and only the south east cleft could be seen (no colour). By 22:40-23:00 the effect had cleared up. No dark triangular patch was seen. When Marshall (Surrey, UK) observed (22:30-03:00) nothing unsual was seen, though a sketch provided shows a light patch on the floor located at 11 o'clock. All observations, made by all observers had some atmospheric turbulence, however trsnparency was good. The Cameron 2006 catalog ID=225 and the weight=5. The ALPO/BAA weight=3.
On 1992 May 13 at UT 22:30 R. Turner (Wolverhampton, UK, 3.6" reftactor, x50) noticed that there was a white spot on the WSW rim that he had not seen earlier. The Cameron 2006 catalog ID=445 and weight=5. ALPO/BAA weight=1.
Pico 1976 Mar 12 UT 21:00? Observed by Findlay (England?) "A ray seen extended fr. mt. in SW (IAU?) direction -- likened to a hockey stick. (not seen in Pickering's photo atlas at col.=53 deg)." NASA catalog weight=3 (average). NASA catalog ID #1430.
Gassendi 1951 May 17 UT 22:45 Observed by Wilkins (Kent, England, 15" reflector) "Bright speck glowed for 3s. (meteor ?)" This was to the W of the central Mts and about the same magnitude as a 4th mag star to the naked eye. JALPO Vol 5 No 8 p4, quotes a 1s duration. NASA catalog weight=0. NASA catalog weight=544. ALPO/BAA weight=1.
On 1963 Nov 28 at UT 00:30-01:45 Barr, Greenacre, Hall and Dungan (Flagstaff, AZ, USA, 24" refractor, and 69" reflector) observed pink on the outer SW rim and a red spot towards the S of this. A red spot was seen on the eastern side of Vallis Schroteri but only by Barr and Dungan. Other features checked for atmospheric spectral dispersion and chromatic aberation - but the colours in Aristarchus were not due to these. Smaller 12" scope checked but no effects seen - presumably due to resolution and image contrast issues? Pink on the SW rim may have been seen in a 69" scope by Boyce and Ford. ALPO/BAA weight=4.
Aristarchus 1973 Feb 14 UTC 18:31-18:34 observed by Fuger (49N, 8.42E, 75mm refractor, T=1, S=2) "Violet colours on S. of the crater" - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61
Herodotus 1966 Jun 30 UTC 03:10-03:35 Observed by Bartlett (Baltimore, MD, USA) described in the NASA catalog as: "Bright pseudo-peak again vis. within floor shadow. Peak est. 5 bright. Had seen it at successive lunations in '66" 4" x280 refractor used. NASA catalog weight=4 (high). NASA catalog TLP ID No. #950. ALPO/BAA weight=3.
Herodotus 1950 Jun 27 UTC 02:30 Bartlett (Baltimore, MD, USA) reported a bright point in crater. This is mentioned in the Middlehurst TLP catalog but not in the Cameron catalog. The source comes from a Strolling Astronomer article. ALPO/BAA weight=3.
On 1992 Mar 16 at UT 00:39-01:14 D. Weier (Sun Praire, WI, USA, 11" reflector) at 00:39UT noted some soft, diffused, faint ïllumination within the shadow projected over the Cobra Head area, though it had a sharp appearance to the edge of the shadow. D. Darling (Sun Praire, WI, USA, 11" reflector) was taking photographs from UT 00:51 and making drawings and visual descriptions. The first 3 photographs in the sequence have the crater as normal. Four other photographs reveal an abnormality. Seeing conditions were excellent and a great deal of surface detail was seen inside Aristarchus crater - however the apeparance of the Cobra's Head was "washed out" and again shadows near to this were illuminated. The NASA catalog ID=442 and the weight=5. The ALPO/BAA weight=3.
On 1891 Oct 14 at UT 18:00 Pickering, based at Arequipa, Peru, and using a 12" reflector, saw is Schroter's Valley and the vicinity "Varitions in vapor column and visibility of craterlets A, C and F (Plate B) in early period at Peru. Directional vaporjet towards F varied but was always continuous. Later, in Musa. There was a break in it. D was quiescent in early period. (due to change in telescope & atmosphere ? Time estimated from given colongitude)." Cameron 1978 catalog ID=273 and weight=3. ALPO/BAA weight=2.
On 2001 Aug 30 at UT20:35-21:15 C. Brook (Plymouth, UK) found a dimming in the central peak of Alphonsus, however it had returned to normal by Aug 31 UT 00:29-00:50UT when A.C. Cook (Alexandria, VA, USA, 8" reflector) examined the area, though there were some slight brightness variations that were attributed to seeing conditions. The ALPO/BAA weight=2.
On 1993 Apr 03 at 23:39UT C. Adams (FL, USA, 24" reflector, x168) noticed a "translucent orange" colour in Gassendi crater within a 35deg sector (apex at the centre) - row of 3 central peaks extending west - the western central peak appeared as a dome with a summit craterlet. The Cameron 2006 catalog ID=450 and the weight=3. The ALPO/BAA weight=3.
On 1993 Apr 03 at 23:39UT D. Weier (Sun Praire, WI, USA, 7x50 binoculars) observed 2 flashes within the Proclus crater. The Cameron 2006 catalog ID=450 and the weight=3. The ALPO/BAA weight=2.
Cavendish 1956 Jan 24 UTC 20:34-20:45 Observed by Houghton and Warner (England) "Variable flashes seen from W. inner(?) wall of crater, then a little inside the terminator. Flashes began with a bright glare at 20:34, were very bright for ~3 min, then faded. Flash rate approximately every 1.5 sec. Other point like peaks did not flash. Also indications were seen of reflections of flashes from E. (inner?) wall and the crater's floor was faintly lit by a glare. Ref: Strolling Astronomer p27, Vol 45, 2003. 17cm reflector x230. Seeing good- excellent. NASA catalog assigns this observation a weight of 4 (good). NASA TLP ID No. #631.
Hislop of England? saw Aristarchus as nebulous at the centre, despite the fact that elsewhere features were well defined. The Cameron 1978 catalog ID=246 and the weight=3. The ALPO/BAA weight=2.
On 1985 Jun 29 at UT 22:56 M.C. Cook (Frimley, UK, seeing poor) observed that Torricelli B looked as bright as a mountain to its south west - no colour was seen. Cameron comments that this was similar to Marshall's 1985 Jul 1 observation. The cameron 2006 catalog ID=278 and the weight=3.
Aristarchus 1982 Nov 27 UT 20:13-01:00 J-H Robinson (Teighmouth, Devon, UK) found that the bands of Aristarchus were clearer in red than in blue light. North found that the sunlit part of the crater was very bright. M. Cook described the crater as a "kaleidoscope of colour. Foley observed UT 23:05-01:00 (Kent, UK, Antionadi III, Transparency Moderate) - Colouration Seen - Ref: BAA Lunar Section Circular. The Cameron 2006 catalog ID=190 and weight=5. The ALPO/BAA weight=3.
Herodotus 1971 Jul 05 UT 03:48 Observed by Bartlett (Baltimore, MD, USA) described in the NASA catalog as: Pseudo-c.p. I= 4(albdeo) appeared to cast a distinct shadow. 1st time seen. (Apollo 15 photo shows an apparent slight elev. nr. center -- very very low hills? 5" refelctor x79,283x, NASA catalog weight=1 (low). ALPO/BAA weight=2.
Promontory LaPlace 1977 Jan 31 UT 20:49-23:00 Observed by Foley (England, 11.75" reflector, x360), Prout (England, 4" refractor or reflector?), Findlay (Dundee, Scotland, 10" reflector, x180, S=VG), Ford (Dundee, Scotland), Mooney (Dundee, Scotland) "With filters in eyepiece, tho't he saw a possible darkening in the blue but no variation in red. Altho. a deep shadow is normal to the W. of the cape at this period, (then cape must have a slope > 30deg!). he wondered if shad. was more extensive than usual? Prout noted a dark inky coma- shaped spot. Dundee obs. concluded it was a shadow. Took photos. Analysis of them was underway at time of rep't." NASA catalog weight=5 (very high). NASA catalog ID #1462.
On 1963 Nov 28 at UT 05:00-06:00 Greenacre, Barr, Hall and Dungan (Flagstaff, AZ, USA, 24" refractor) observed a deep violet area form on the western exterior of Aristarchus, and a less deep violet area form to the eastern edge of Aristarchus. As these were becoming stronger, a blue-like haze formed on the sunlit floor of Aristarchus, that obscured underlying detail. The ALPO/BAA weight=2.
On 1997 Oct 13 at UT11:09-11:21 D. Rodway (Oamaru, South Island, New Zealand, 8.5" reflector, x270) saw a deep salmon-pink colouration in the south east corner interior of the crater Aristarchus. This colour was confirmed by the observers wife. By 11:21 UT the colour had faded completely. Rodway had been a lunar observer since 1958, using a wide range of instruments from 3 inch refractors to 12 inch reflectors and had observed a TLP in Gassendi back in 1966 (from L'ondon, UK), and so was an experienced observer. The ALPO/BAA weight=4.
E. of Picard 1948 Aug 16/17 UTC 22:30-02:26 Observed by Moore & Baum (Chester, UK) described in NASA catalog as: "2 areas E. of Picard appeared featureless. Cloud-like patches, 12(?)inch reflector. NASA catalog weight=4 (high). NASA catalog ID No. #509.
Alphonsus 1966 Aug 28 UTC 06:00-08:00 Observers from Astronet (Tucson, AZ, USA). NASA catalog states: "Brightenings in 2 dark patches & near fainter (40%) dark patch (40% of way from the c.p. to W. wall). 21" x200 reflector used. NASA catalog weight=2 (poor). NASA catalog TLP ID No. 969.
On 1975 Mar 24 at UT19:08-19:45 P.W. Foley (Kent, UK) observed blueness in the North East (Classical?) corner of Aristarchus. Moon blink seen - pale in red. Most other observers clouded out. The ALPO/BAA weight=3.
Herodotus 2002 Sep 18 UT 22:00 Observed by Raffaello Lena (GLR, Italy). Event described was of two pseudo-peak/hill-like features, one on the southern floor of the crater, and another just slightly to the NW of the centre. on the southern floor of the crater. Lena suspects a combination of seeing effects and albedo markings on the floor. However this effect of two spots on the floor has not been repeated again.For further information, theory, and a sketch please see Fig 5 in this web link: http://utenti.lycos.it/gibbidomine/analisi123.htm ALPO/BAA weight=2.
Eratosthenes 1936 May 04 UT 05:40 Observed by E.P.Martz (Mandeville, Jamaica) "Detected bright spots on floor" NASA catalog weight=3 (average). NASA catalog ID #414. Ref. Haas, W. 1942, J.Royal.Ast. Soc. Canada, 36, 398. ALPO/BAA weight=1.
On 1963 Nov 28 at UT 22:30-00:00 Fisher (Colefax, CA, USA, 8" Newtonian reflector)observed a yellow on crater rims adjacent to Anaximander. Yellow colour also seen on Aristarchus that night. The ALPO/BAA weight=1.
Aristarchus 1972 May 25 UT 19:32-19:38 Observed by Leitzinger (8.75E, 48.75N, Germany, 60mm f/15 telescope T=2, S=2) "Bright point at SE wall well visible, colour changed to orange shortly before it disappeared" published in Hilbrecht & Kuveler (1984) Moon and Planets, Vol 30, p53-61.
On 1980 Sep 22 at UT05:00? D. Louderback (South Bend, WA, USA, 8" reflector, x140 and 2.5" refractor) observed in Promitorium Agarum that one of his pre-designated points, called "A", through to "C and "D" was at least 5 brightness points brighter in red than in blue light. The reverse was true on Sep 25th. Tonight the red seemed to be on a narrow strip on the western edge. The Cameron 2006 catalog ID=109 and the weight=3. The ALPO/BAA weight=3.
Promontoroum Agarum. On 2015 Nov 24 UT 00:50-01:15 J. Albert (Lake Worth, FL, USA, Celestron C11, x224, seeing 4/10, transparency = 3rd magnitude) observed that this feature was slightly brighter through a red Wratten 25 filter than through a blue Wratten 44a filter. ALPO/BAA TLP weight=2.
On 1979 Dec 02 at UT 00:36 D. Darling (Sun Praire, WI, USA, 12.5" reflector, x349, seeing? 9-10/10 at 32 deg altitude) observed a bright flash between Aristarchus and Prinz crater on the illuminated part of the surface. The Cameron 1978 catalog ID=76 and weight=3. The ALPO/BAA weight=2.
Aristarchus 1973 Apr 15 UTC 19:03-20:13 observed by Pasternak (53deg 20'N, 7deg 30'E, 75mm reflector) "N wall was blue to violet, beginning disappearance at 20:08UT., end at 20:13UT." - Hilbrecht and Kuveler, Earth, Moon & Planets, 30 (1984), p53-61
On 1981 Oct 11 at UT04:45-05:03 D. Louderback (South Bend, WA, USA, 3" refractor) detected a violet tinge on the dark nimbus of Aristarchus, however by 05:13 the coloured tinge had gone. Louderback suspects an atmospheric effect. The Cameron 2006 catalog ID=155 and weight=0. The ALPO/BAA weight=1.
Aristarchus 1973 Feb 15 UTC 17:07-19:31 Observed by Theiss (51N, 9.67E, 75mm refractor) "Area 4-5 diameters of Aristarchus were coloured clearly yellow to red" Ref: Hilbrecht & Kuveler (1984) Moon & Planets 30, pp53-61.
Aristarchus - 1969 Jul 27 UT 05:00-07:00 Observed by W. Cardoso (Rio de Janeiro, Brazil, 13" Refractor) "Brightening. Filter used, (Jose da Silva says obs. no good, obs. inexperienced. Apollo 11 watch)." NASA catalog weight=0. SA catalog ID No. 1188. ALPO/BAA weight=1.
Pythagoras-Cleostratus 1974 Feb 05 UT 01:45,02:45 observed by Lord (St Anne's-on-Sea, Eng., 3" refractor, x135) "Event normal in integrated light. Light, full surface detail in red filter, dark, with full surface detail in blue filter. Other term. features did not show it. Only E.floor of Pythag., Babbage northern crater chain & NW floor of Cleostr. (According to Fitton's criteria this was a tenuous gas above the surface. Date given as 5th, but term. was at least 3deg E. Therefore these features were in the dark then. Ancill. data given for 6th)." NASA catalog weight=3. NASA catalog ID=#1387. ALPO/BAA weight=3.
Pythagoras-Cleostratus 1974 Feb 05? UTC 01:45,02:45 observed by Lord (St Anne's-on-Sea, Eng., 3" refractor, x135) "Event normal in integrated light. Light, full surface detail in red filter, dark, with full surface detail in blue filter. Other term. features did not show it. Only E.floor of Pythag., Babbage northern crater chain & NW floor of Cleostr. (According to Fitton's criteria this was a tenuous gas above the surface. Date given as 5th, but term. was at least 3deg E. Therefore these features were in the dark then. Ancill. data given for 6th)." NASA catalog weight=3 (average). NASA catalog ID=#1387.
Manillius 1969 Jul 27 UT 05:45-05:46 Observed by Wairy Cardoso (Rio de Janeiro, Brazil, 13" refractor, x360) "Bright spot in Manillius (Apollo 11 watch, J. M. L. da Silva says obs. no good because of inexper. of obs)" NASA catalog weight=0. NASA catalog ID #1189. ALPO/BAA weight=1.
On 1963 Nov 29 at UT 01:30-03:00 Fisher (Colefax, CA, USA, 20cm reflector, thin streamers of cloud across sky, but no wind) Aristarchus had a faint pale yellow tint along the rim and the crater was very bright. No detail seen in in Vallis Schroteri. Yellow spot also seen on the northern limb (Carpenter and Pythagoras?). Both effects had been seen the previous night and were confirmed by friends. Colour still present when observing stopped at 03:00 UT. The ALPO/BAA weight=1.
On 1963 Nov 29 at UT 01:30-03:00 Fisher (Colefax, CA, USA, 20cm reflector, thin streamers of cloud across sky, but no wind.) Carpenter had a yellow tint along the W rim. Ywllow tint seen on Pythagoras and also Aristarchus. Effect had been seen the previous night and were confirmed by friends. Colour still present when observing stopped at 03L00 UT. The ALPO/BAA weight=1.
On 1963 Nov 29 at UT 01:30-03:00 Fisher (Colefax, CA, USA, 20cm reflector, thin streamers of cloud across sky, but no wind.) Pythagoras had a yellow tint along the W rim. Ywllow tint seen on Carpenter and also Aristarchus. Effect had been seen the previous night and were confirmed by friends. Colour still present when observing stopped at 03L00 UT. The ALPO/BAA weight=1.
Menelaus 1969 Jul 27 UT 1969 Jul 27 UT 06:27-07:30 Observed by Wairy Cardoso (Rio de Janeiro, Brazil, 13" refractor, x360) "Brightening in Menelaus (Apollo 11 watch, J. M. L. da Silva says obs. no good because of inexper. of obs)" NASA catalog weight=0. NASA catalog ID #1189. ALPO/BAA weight=1.
Alphonsus (black spot, upland #1) 1965 Oct 08 UT 05:48-08:23 Observed by McCord (Mt Wilson, CA, USA, 60" reflector + spectrograph) "Line depth ratios a/b(H?), c/d (K?) were significantly low for upland #1 & abnormally high for Alphonsus black spot, but not as pronounced as the other area was high compared with 23 other areas" NASA catalog weight=5 (very good). NASA catalog ID #899.
Aristarchus, Herodotus - 1967 Sep 16 UTC 23:50-23:55 observed by Seeliger (Dresden, Germany, 30" reflector, 90, 140x) "Dark streaks on E.(ast. ?) outside walls of both craters. No shadow from Herod. wall. Drawings (wall < 18 deg slope if no shadow normally)." NASA catalog weight=3 (average). NASA catalog ID=#1044.
Aristarchus 1976 Jan 14 UT 20:00-23:00 Observed by P.W. Foley (Wilmington, Kent, UK) - Deep Violet/Blue spot interior N/WW corner. No colour seen elsewhere. It was only a blue spot on the Jan 13. ALPO/BAA weight=1.
Plato 1976 Jan 14 UT 20:50 Observed by J.H-Robinson (Teignmouth, UK, 26cm Newtonian, Wratten 25 and 44a filters, x200, seeing fair to poor). The Plato floor patches were clearer in red than in blue light. ALPO/BAA weight=1.
Schickard 1944 Aug 31 UTC 21:00? Observed by Wilkins (Kent, England) described in the NASA catalog as: "Saw a mist in it which was gone next nite. interor was dotted with white spots, contrasting sharply with dark areas. All very clear on Aug 15 at sunset". 8.5" reflector. NASA catalog weight=4 {high). NASA catalog TLP ID No. #492. ALPO/BAA weight=3.
On 2010 Apr 27 at UT 00:10-00:30 and 01:45-02:00 P. Grego (St Dennis, UK, 20 and 30cm reflectors) noticed a craterlet just to the east of Briggs and an E-W trending lineament or wrinkle ridge that did not show on NASA LAC charts. Further checks did not reveal it on Lunar Orbiter mosaics, but the craterlets (and not the E-W trending ridge) were visible in LROC topography data. The ridge is possibly a very low relief feature that shows only under very shallow illumination conditions. The ALPO/BAA weight=1 until we get confirmation at repeat illumination.
Aristarchus 1967 Sep 17 UTC 02:05-02:21 Observers: Delano (Fall River, MA, USA) and Corralitos Observatory (Organ Pass, NM, USA). The former used a 12.5" reflector at 400x and the latter a 24" reflector. The NASA catalog states the following: "A rimtop cratelet on SW rim appeared almost as bright as c.p. thru a Wratten 25 filter (red) but no brighter than a lower central wall & rim thru a Wratten 48 (blue) filter. Inner W. slope of craterlet displayed a bright red color which became less & less noticeable until 0212h It was no longer brighter than other parts. At 0217 it flared again brighter red for 1m. (indep. confirm. of Seeliger for activity in Aris. ?) Corralitos MB did not confirm. NASA catalog weight=4. NASA catalog TLP ID No. #1045. ALPO/BAA weight=2.
On 1975 Mar 25 at UT18:50-20:50 P.W. Foley (Kent, UK) observed blue/grey in Aristarchus. The ALPO/BAA weight=1.
On 1983 Sep 20 at UT 05:08-06:13 Louderback (South Bend, WA, USA, 3" refractor, x150, seeing poor and chromatic aberation on the limb) detected "purple"in the vicinity of Aristarchus crater and this was stongest on the north and north west external rims, however there was no "violet glare"from inside the crater. However the region of the central peak was very bright - though he could not detect the central peak. The brightness of the TLP was 4.5 and it should normally be 3 (nimbus area). Near the "big plain"it was 7. The chromatic aberation seen on the crater. There was also violet on the northen wall of Herodotus crater and the Cobra Head. Ït appeared dark blue in the blue filter", the surrounds remained gray". Apparently on the 26th the"ring was still dark with faint violet - nearly normal". Cameron comments that the TLP was due to spurious colour. The Cameron 2006 catalog ID= 229 and the weight=3. The ALPO/BAA weight=2.
On 1975 Mar 25 at UT19:59-20:02 P.W. Foley (Wilmington, Dartford, Kent, UK, 30cm Newtownian) observed blueness along the inner southern wall of Plato. This is a BAA report. The ALPO/BAA weight=1.
On 1985 Jul 01 at 02:00-03:00 UT K. Marshall (Medellin, Columbia) observed thatTorricelli B was very bright - verified using a C.E.D. No colour was seen though. the Cameron 2006 catalog ID=279 and the weight= 4. The ALPO/BAA weight=3.
On 1980 Jan 01 at UT 00:10-00:21 A.C.Cook (Frimley, UK, 12" reflector, Wratten 29 and 44A filters, Seeing II-III and transparency poor- moderate) suspected that the floor was slightly brighter in blue light than in red. No such effect was seen earlier at 23:54-23:57. Cameron 2006 catalog ID=81 and weight=3. ALPO/BAA weight=1.
On 1979 Oct 04 at UT21:05-23:40 P.W. Foley (Kent, UK, 12" reflector, x360, seeing=II) detected colour in Aristarchus (and also in Bullialdus - there was a TLP alert at this time for Bullialdus) but nowehere else on the Moon. Aristarchus had a CED brightness value of 3.8 at 21:05 (though at this time no colour) and 3.4 at 23:40 and the floor was now slate blue/gray in colour. Other features remained constant in brightness. The Cameron 2006 catalog ID=72 and the weight=0. The ALPO/BAA weight=1.
Bullialdus 1979 Oct 04 UT 20:24-21:25 JH-Robinson (Devon, UK, 260mm Newt. x200 Seeing Antoniadi IV-V, Transp.=haze) observed a two bright points on the south west floor patch to be brighter in red than in blue at 21:12. The effect was still present at 20:36 but back to normal by 20:43-20:48. Amery (Reading, UK) found a possible brownish tinge on the west wall, though spuroius colour was present elsewhere on the Moon. Foley found the WSW corner darkened in blue light. Cook found pink on south rim of Bullialdus and Pedler found Bullialdus to be a confused mass with bright and dusky spots and patches - no colour seen. Cameron 2006 catalog ID=72 and weight=0. ALPO/BAA weight=1.
Aristarchus 1959 Jan 23 UT 06:20 - Observer: Alter (Mt Wilson, CA, 60" reflector x700) "Brilliant blue in interior later turning white. Photos obtained. (MBMW has this entry twice for diff. dates because source gave UT date as 23rd.)" NASA catalog weight=5. NASA catalog ID = #712. ALPO/BAA weight=4.
Aristarchus-Herodotus 1964 Sep 20 UTC 04:15-04:50 - Observers: Crowe & Cross (Whittier, CA, USA, 19" reflector x390) "Several red spots in area between the 2 craters. No change in phenom. so stopped observing" NASA catalog weight=5 (very good). NASA catalog ID #849.
nr.Ross D 1964 Sep 20 UTC 04:55-05:00 - Observers: Harris & Cross (Whittler, CA, USA, 19" reflector x250) "Opaque, outgassing, obscuration" NASA catalog weight=5 (very high). NASA catalog ID #850.
On 1965 Sep 09 at UT 13:20 Presson observed an orange-red srip on the floor of Aristarchus. Cameron says that this was confirmed later by Bartlett? The Cameron 1978 catalog ID=892 and weight=2. The ALPO/BAA weight=2.
Near Aristarchus 1788 Apr 19 UT 20:00? Observed by Schroter (Lilienthal, Germany) Event described as: "Small area very brilliant & other bright spots". No additional references given. NASA Catalog Event #44, NASA Weight=4. ALPO/BAA weight=1.
Gassendi 1968 Jun 09 UT 21:35-21:45 Observer: Miles (UK, 5" refractor x120) "Blink inside NW wall. Trees stopped obs. at 2145h. At 2155h no blink vis. (Moore has date as June 6th, 1958 =misprint? as there weren't blink sys. then. Moon at low alt 7deg)." NASA catalog weight=2. NASA catalog ID #1077. ALPO/BAA weight=2.
On 2013 Jan 25 UT 19:05-19:15 R.Braga (Milan, Italy, 115mm refractor, x267, seeing III, transparency average) observed that Plato in general was normal in appearance, but the east rim was showing a remarkable golden (yellow-golden) hue. This was a repeat illumination observation for a W.E. Fox TLP observation from 1938 Feb 14. The observer was wondering whether they were in some way biased after reading the original report desription - so uncertain over this being a TLP. In view of uncertainty ALPO/BAA weight=1.
Plato 1938 Feb 14 UT 00:25 Observed by Fox (Newark, England, 6.5" reflector, x240) "Prominent gold-brown spot on E. wall with yellow glow without definite boundary, spreading over floor." NASA catalog weight=3. NASA catalog ID #431. ALPO/BAA weight=3.
Aristarchus 1976 Jan 15 UT 19:30-20:50 Observed by P.W. Foley (Kent, UK, 12" reflector) - Aristarchus was abnormally bright (Cameron suspects that this is a confirmation an explosion effect seen earlier by Greenland: "On 1976 Jan 15 at 19:45Ut Greenland (Crawley, UK, 7x50 binooculars) thought that they saw an "explosion" on the Moon (in the general region of Aristarchus) for a fraction of a second, followed by a bright spot in the same position (not an astronomer). After discussions with others, decided it was a moment of transition to greater intensity (better seeing?). Moore thinks it was atmospheric but says it should be on record. Cmeron's 1978 catalog ID=1425 and weight=5". For the Foley report: Cameron 1978 catalog TLP ID=1427 and weight=5. ALPO/BAA weight=1.
Aristarchus 1950 Jun 29 UT 05:20-05:41 Observed by Bartlett (Baltimore, MD, USA, 3.5" reflector x100, S=6, T=5) "Strong bluish glare on E..SE wall." NASA catalog weight=4. NASA catalog ID #529.
(65E, 56N) near Endymion & Mare Humboldt 1968 Jun 10 UT 02:35 Observed by Provenmire, Robinson et al. (Hamburg, PA, USA, 6" reflector x105, Seeing=good, alt=20deg) "While waiting for reappearance of Antares from a grazing occultation at 13+/-4deg P.A. saw a prolonged blue flash lasting from minimum of 1/2 to a max. of 2.0 s. Several others along obs. path of several miles also saw it so not a local phenom. (located 38 deg from cusp, azimuth=157 deg?)" NASA catalog weight=5 (very good). NASA catalog ID #1078.
On 1971 Apr 09 at UT 22:30-23:05 N. Brown (Huntington, York, UK, 37cm reflector, x252) noted that the bands in Aristarchus were noticeably more prominent in blue light than in red. This has no entry in the 1978 Cameron catalog. It has an ALPO/BAA weight of 2.
On 1897 Jun 14 at UT 23:00 Pickering (Cambridge, Mass. USA) observed in "Schroter's valley and the vicinity variations in vapor colum. Break in col. toward F and eruption of crater D. 3.4 d after sunrise". The Cameron 1978 catalog ID=389 and the weight=3. The ALPO/BAA weight=2.
Galvani B: On 2019 Sep 13 UT 23:26 K. Kilburn (Manchester, UK, BAA - ED80 refractor, x2 Barlow, Canon 550 DSLR) took a sequence of images from 23:25-23:27 UT. On one of the images, taken at 23:26UT there is a blue/green spot on Galvani B. There is a hint of a possible fade of the spot in the other images but this is not conclussive. Te spot might just be a cosmic ray event or a bright part of the crater rim coming into view under brief exceptional seeing for one frame only. We need simlar illumination, and if possible topocentric libtation images, under different atmospheric conditions to confirm this. It would be great if the images were in colour too. The ALPO/BAA weight=1.
Plato 1980 Oct 23 UT 21:00(+/- approx 1 hour) Observed by Chapman (Kingston Upon-Thames, UK, 11.5cm refractor, seeing III, transparency poor. No spurious colour seen. During one (or both?) of these sessions, a Moon Blink was used and produced no results on all craters tested on, apart from Plato where the SW corner of the floor was brighter in red, and also visible in white light, but viewing was poor and at the limit for his telescope. ALPO/BAA weight=1.
Cauchy 1969 Jul 29 UT 06:00-06:22 Observed by Claudio Pamplona and Jackson Barbosa (Fortaleza, Brazil, 2" refractor) "very bright and clear(?) pulsating 3,3s,3s with crater illum. then 3s area illum. red & no filter area pulsated for 22m. Confirmed by Jackson (Apollo 11 watch)". NASA catalog weight=3. NASA catalog ID #1193. ALPO/BAA weight=3.
On 1993 Apr 06 at UT23:00 M.C. Cook (Frimley, UK) observed a TLP in Torricelli B - "Noted that it was > yellow but only visible in mauve + yellow combined". The Cameron 2006 catalog ID=460 and the weight=4. The ALPO/BAA weight=2.
Helicon A 1977 Feb 03 UT 2009-23:52 Foley and Moore observed the crater to be changing in brightness. Jewitt and Elms failed to detect this. ALPO/BAA weight=1.
Aristarchus 1976 Jan 16 UT 22:00-23:15 Observed by P.W. Foley (Wilmington, Kent, UK, seeing II) - Aristarchus was tremendously bright. No colour seen. ALPO/BAA weight=1.
Aristarchus 1973 Feb 17 UTC 22:15-22:45 Observed by Rose, Hunt, Robinson, Coleman (UK) described in the NASA catalog as: "Rose tho't W.rampart was diffuse over 1/3 its length. Alerted Hunt who tho't there was a dark patch (in poor seeing) but the diffuse effect was neg. Robinson tho't things norm. also Coleman(Seeing=poor). Moore thinks not real phenom. Rose used a 14", hunt a 6" and Robinson (and? Coleman) a 10" reflector. NASA catalog weight=1 (low). NASA catalog TLP ID No. 1363
Gauss 1967 Sep 19 UT 02:33 Observer: Chilton (Hamilton, ON, Canada, 12.5" Gregorian, 200x and a 4" refractor). In a polaroid filter the west wall was missing. Effect seen in large scope and also in 4-in finder. His conclusion was that W. wall reflected polarized light. Cameron 1978 catalog weight=3 (good) and TLP ID #1047. ALPO/BAA weight=4.
Herodotus 1968 Aug 09 UTC 02:05-03:45 Observed by Lowe (Springfield, VA, USA) described in the NASA catalog as: "With naked eye saw a bright spot in NW part of Moon; tho't it was Aristarchus, but 7x binoculars showed it to be Herod. which was brighter than Aris! still apparent at 0245h, but was normal at 0345h. (at FM, must have been an extraordinary event)". Naked eye and 7x binoculars used. The NASA catalog assigns this a high weight of 4. The NASA catalog TLP ID No. is #1087. Reference for observation is personal communication from the observer to Winified Sawtell Cameron. ALPO/BAA weight=3.
1974 Mar 08 UT 22:55 R. Livesey (Scotland, UK) noted that this crater was reddish, but suspected that it was an optical effect? ALPO/BAA weight=1.
On 1975 Mar 27 at UT22:30-01:45 P.W. Foley (Wilmington, Dartford, Kent, UK, 30cm Newtownian) observed blueness along the inner southern wall of Plato, though the centre of the activity was offset on one side. This is a BAA report. The ALPO/BAA weight=1.
Hyginus Nova 1877 May 27 UT 20:37 Observed by Klein (Cologne, Germany) NASA Catalog Event #190, NASA Weight=1 (Very Low). Event described as: "New crater 3mi.diam Didn't see anything there 12 yrs. previously in studies. (Schmidt showed it sometimes dark, sometimes light, sometimes not at all. Neison studied region minutely 20x from July 1870-Aug,1875 & did not record it. Gauth says it's not new (changes there?) "References: Neison, E. The Moon, Longmans, Green and Co., London, 1876; Astron. Reg. 17, 204, 1877?
Lichtenberg 1955 May 07/08 UT 23:00-01:00 Observer: Jean Nicolini (Brazil). Ref: Azevedo (1962) NASA catalog weight=1, NASA catalog ID 590. ALPO/BAA weight=1.
"Proclus D. (Bartlett's designation) appeared as a dark spot, conformable to lts appear. at col. 111.15 deg in '55. Proc. A (Bartlett's designation) completely invisible the ordinarily easy to see. Conspic. a' col.103.78deg in 55' & st 110.1 deg in '55, but also invis. at col. 30.78deg in '56". Cameron 1978 catalog ID 665 and weight=4. Observer based in Baltimore, MD, USA and used a 5" reflectore x180 and S=4 and T=5. ALPO/BAA weight=2.
Aristarchus 1972 Mar 30 UTC 23:03-23:05 Observed by Kufer (11.5E, 48.25N, 110mm reflector) "A sudden brightening, but observations limited by cloud" Ref: Hilbrecht & Kuveler Moon & Planets (1984) Vol 30, pp53-61.
Observed by Bartlett (Baltimore, MD, USA) described in NASA catalog as: "Strong viol. gl. on EWBS, whole length of E. wall. Dark viol. on nimbus pale viol. on plateau m. Area was hazy -- couldn't focus it. Brilliantly clear nite.3.5(?) reflector x180 used. NASA catalog wight=4, NASA catalog ID #665. ALPO/BAA weight=2.
Mare Crisium 1965 Oct 11 UTC 05:15 Observed by McCord (Mt Wilson, CA, 100" reflector + spectrogram) "Line depth ratios a/b (H),, c/d (K) abnormally high compared with 23 other areas (including Aristarchus?)." NASA catalog weight=5 (very high). NASA catalog ID 902.
On 2012 Jan 09 UT 21:01-21:08 Hahn crater was imaged by N. Hazel (Beverley, Yorkshire, UK, Nikon D7000 with 70-300 zoom at max, with 2x teleconverter, at f9, 1/320 sec, ISO 400 – tripod mounted, mirror up), A series of images were taken. The 21:06 one showed a grey column cutting across the central floor of the crater from the west and then bisecting the eastern rim. All detail inside is completely invisble. Some (but not all) of the other images showed a more blurred view of this feature. It's possible that this was a seeing ripple effect, or just the natural appearance of shadings on the Moon at this time, however for now this will be given an ALPO/BAA weight of 1.
In 1958 aug 20 at UT 20:00? an unknown observer noticed that Promontorium Agarum appeared filled with fog or mist. The Cameron 1978 catalog ID=510 and the weight=3. The ALPO/BAA weight=2.
Aristarchus 1970 Apr 22 UT 07:00 Observed by Thomas.
Plato 1869 Sep 21-22? UTC 00:00? Observed by Gledhill (Halifax, UK, 9" refractor) "Group I craters-notable illum. accomp. by a single light on a distinct spot. (similar to Aug. obs. & if same phase as Ap 1870, date =22nd.). NASA catalog weight=2 (poor). NASA catalog ID #164.
Mare Crisium 1965 Oct 11 UTC 07:32 Observed by McCord (Mt Wilson, CA, 100" reflector + spectrogram) "Line depth ratios a/b (H),, c/d (K) abnormally high compared with 23 other areas (including Aristarchus?)." NASA catalog weight=5 (very high). NASA catalog ID 902.
Aristarchus 1966 Jul 04 UTC 06:15-06:35 Observed by Bartlett (Baltimore, MD, USA, 5" reflector x142) & by Corralitos Observatory (Organ Pass, NM, USA, 24" reflector). "S.region of floor was granulated & dull est. at 6 & pale yellow-brown tint. Rest of crater est. 8 bright white. Not confirmed by Corralitos MB" S=5, T=4. NASA catalog weight=4 (high). NASA catalog ID #955. ALPO/BAA weight=3.
On 1970 Aug 12 at UT21:00? an unknown observer commented about Plato: "Light #22, remarkable increase in brightness. #32 subsided & #14 shone out then faded & #16 brightened. (Fort says that till Apr. 1871 selenog recorded 1600 obs. of fluctuations of lights in Plato & had drawn 37 graphs of indiv. lights. These were deposited in the library of the Royal Astronomical Society by Birt)." The Cameron 1978 catalog ID=169 and the weight=3. The ALPO/BAA weight=2.
In 1962 Sep 16 at UT08:05 Wildey, Pohn (Mt Wilson, CA, USA, 60" reflector) Taruntius faded from Vmag-3.21 to 4.04, a 0.82 difference in magnitude in 2.5 hours - a photometric measurement. The average magnitude for this age is 4.03, so therefore the crater had brightened by two times above normal. The Cameron 1978 catalogID=769 and the weight=5. The ALPO/BAA weight=3.
Aristarchus 1969 Jun 30 - Jul 01 UT 23:37-00:00, 00:02-00:05 Observers: Moore (Sussex, UK, 12.5" reflector x360), Altizer, Arabanel (Corralitos Obs., Organ Pass, NM, USA, 24" reflector) "SE wall was orange, detected by Eng. MB Fading by 2353h, only a trace at 2358h & disappeared at 0000h. Later at 0002-0005h suspected again. Alt. was low. Bluring around crater seen at Corrralitos Obs. in the MB, but immeasurable on photos." NASA catalog ID #1150, NASA weight=2(for Moore), 5 (for Corralitos Obs). ALPO/BAA weight=3.
Aristarchus 1939 Dec 27 UT 08:00? Observed by Barcroft (Madera, CA, USA, 6" reflector) "Faint bluish mist on inner W. wall (according to Firsoff it was right after SR, but this can't be as age=16d & SR comes at 11d)" NASA catalog weight=3 (average). NASA catalog ID #464.
Mare Crisium 1965 Oct 11 UTC 10:10 Observed by McCord (Mt Wilson, CA, 100" reflector + spectrogram) "Line depth ratios a/b (H),, c/d (K) abnormally high compared with 23 other areas (including Aristarchus?)." NASA catalog weight=5 (very high). NASA catalog ID 902.
On 1980 Oct 25 at UT03:53-05:21 D. Louderback (South Bend, WA, USA, 2.5" refractor, seeing=1-2 and transparency=2) found Proclus to have a slight yelloow tinge on the north wall. the brightness of Proclus was 9 and that of Eimmart 8. Cameron 2006 catalog ID=117 and weight=3. ALPO/BAA weight=3.
On 1980 Oct 25 at UT03:53-05:21 D. Louderback (South Bend, WA, USA, 2.5" refractor, seeing=1-2 and transparency=2) found Promontorium Agarum to have a slight blue tinge - apparently similar to that seen on Eimmart from an earlier date. Cameron 2006 catalog ID=117 and weight=3. ALPO/BAA weight=2.
On 1975 Mar 27 at UT22:30-01:45 P.W. Foley (Wilmington, Dartford, Kent, UK, 30cm Newtownian) observed blueness along the inner southern wall of Plato. This is a BAA report. The ALPO/BAA weight=1.
On 1975 Mar 28 at UT22:30-23:42 P.W. Foley (Kent, UK) observed orange/red in Aristarchus. The ALPO/BAA weight=1.
On 1989 Jun 20 UT 0628-06:58 R. Manske (Sun Praire, WI, USA, 1" refractor) discovered blue on the north west inner wall and red on the south east outer wall. At 05:39 he could see the blue but not the red. No colour was detected on Tycho, but he thought that he could detect a pinkish colouration over the whole Moon. The Cameron 2006 catalog ID= 367 and the weight=1. The ALPO/BAA weight=1.
On 1981 Oct 15 at UT06:03-06:51 D. Louderback (South Bend, WA, USA, 3" refractor, seeing=1-2 and transparency=5) observed that the brightenss of 4 sun lit bright spots differed in red and blue light. "Appeared as a cross. the 2 points A & D on his sketch (index) were affceted. They were 10 pts dimmer in red than blue. Not due to seeing as they did not fluctuate (as did the seeing)." This report came from the Cameron 2006 catalog and had an ID No. of 156 and a weight=3. The ALPO/BAA weight=2.
On 2009 Apr 12 at UT 00:00 C. Brook (Plymouth, UK, 2" refractor, x25, Edmund Optics filter No. 80 (blue) and No. 47 (light rose/purple)) noted that the rays of Proclus stood out better in light rose/purple than in blue. Not just the rays crossing Mare Crisium. The ALPO/BAA weight=1.
On 1992 May 19 at UT 01:00-02:05 P. Moore (Selsey, UK, 15" reflector, x260) saw at 01:25UT an unmistakable red-orange glow on the south and south-east rim with the "Spur". Apparently Chapman (Kent, UK) detected it easily. At 01:33UT the colour was barely visible. No TLP alert was issued because the souther edge of Mons Pico also exhibited a hint of colour, and anyway the seeing conditions were poor. Despite this no other features revealed colour. The Cameron 2006 catalog ID=446 and the weight=0. The ALPO/BAA weight=1.
On 1992 May 19 at UT 01:00-02:05 P. Moore (Selsey, UK, 15" reflector, x260) noted that the southern slope of Mons Pico had a tint of colour. No other features revealed colour apart from Aristarcus, where a TLP was going on. The Cameron 2006 catalog ID=446 and the weight=0. The ALPO/BAA weight=1.
Alphonsus 1966 Sep 02 UTC 03:16-04:18 Observed by Whippey (Northolt, UK, 3" refractor) & Corralitos Observatory (Organ Pass, NM, USA, 24" reflector) "A series of weak glows, final flash at 0418h. Not confirmed by Corralitos MB" NASA catalog weight=3 (average). NASA catalog ID 971.
Aristarchus 1970 Apr 23 UTC 07:00 Observed by Thomas
Aristarchus and vicinity 1975 Feb 28 UT 03:20-03:45 Observers LeCroy Jr & Sr (Springfield, VA, USA). NASA catalog states: "Orange flash in crater that then spread over whole crater then turned to bluish haze at 0320h. Couldn't see surface underneath. All W. hemisphere was brighter than normal. Blue was only on Aris. Rest of Moon was examined for phenom. but none seen elsewhere. Gone by 0343h (just a few hrs after Eng. obs. -- not likely U.S. obs. had temp. inversion high press. sys. W. of him too). 4.5" reflector 45x, 150x. NASA catalog weight=4. NASA catalog TLP ID No. #1401. ALPO/BAA weight=4.
Plato 1966 Sep 02 UT 0625 Observed by Kelsey (Riverside, California, USA, 8" reflector x300) "Landslip at west would not focus. (Ricker not certain it was a real LTP)." NASA catalog weight=2 (low). NASA catalog ID 973.
In 1950 Jul 02 UT07:22 Bartlett (Baltimore, MD, USA, 3.5" reflector) saw no dark bands on the inside of Aristarchus, despite detail being seen elsewhere. He would normally have expected to have seen bands at this colongitude, based upon past observations. The ALPO/BAA weight=2.
Aristarchus 1983 Oct 23 UT 19:00-01:30 Observer: Foley (Kent, UK, 12" reflector, seeing=II) noiced at 19:00UT an extended bright spot on E wall and extending beyond. This was brighter than other areas of the crater. There was also occasional star-like glistening. Foley comments that the inside of Aristarchus was slightly obscured. The TLP started fading from UT20:30 and finished by 01:30UT. six out of nine independent observers confirmed the effects seen. In total 14 observers observed, 9 reported back and 6 found abnormalities in Aristarcus though all encountered variable seeing conditions - some had spurious colour. Cameron comments that this was one of the best recorded/confirmed TLP events. All CED brightness measurements obtained were very high. Moore, Nicolson and Clarke (5" refractor and 15" reflector, 230-350xseeing III) found the crater to be very bright at 19:11UT through a 5" refractor and there was a blob on the east rim (Bartlet's EWBS?) at 19:14UT. Nicolson also saw a very bright star-like area on the eastern wall but this was not defined as it usually is. The crater was also very bright at 22:43UT using the 15" reflector available to these observers. At 01:07UT they used a Moon blink and discovered that the bright region was bright in blue light and less bright in red - although this was not a detactable blink when switching rapidly between filters. They found that the crater had returned to normal by 01:15UT. M.C. Cook (Frimley, UK, seeing III-IV) observed a large diffuse spot on the east of the crater that was brighter in blue than in red light and the CED device gave a high reading. J.D. Cook (Frimley, UK, seeing III-IV) made a skecth that showed the bright spot extended on the east wall - again the CED reading was high and a lot of detail was visible on the floor. A.C. Cook (Frimley, UK, seeing III-IV) also noted remarkable detail and the bright (as confirmed by CED) blob on the eastern rim. G. North (Sussex, UK, seeing III-II) also confirmed the bright blob on the eastern wall. Wooller found the north west wall was a dirty yellow colour - though no colour was seen elsewhere in or outside the crater. Mosely found the crater to be bright and his sketch revealed the extension of the bright blob on the eastern rim and again a great deal of interior detail. Amery (Reading, UK, seeing III) found Aristarchus to be "a brilliant splash against dulled background in violet filter, especially polarizing filter. CED + polarizer readings high, but not as high as previous night". Mobberley (Suffolk, UK, seeing III-IV) remarked that "spurious colour a total mess around Aristarchus & nothing abnormal seen". A photograph was taken at 20:50UT reveals the bright blob and entire detail. Peters (Kent, UK, seeingIII-II) observed Aristarchus with a UV screen from 20:15-21:23UT and comented that althogh being very bright, there was no variation between white and UV. It was checked with a Moon Blink device and the radial bands were clearly seen in white light, < in blue. The Cameron 2008 catalog ID=233 and the weight=5. The ALPO/BAA weight=4.
On 2002 Sep 23 at UT22:45-23:56 C. Brook (Plymouth, UK) noticed that the bands inside Aristarchus varied (UT22:45-22:56) in definition whilst the rim of Herodotus and the rays of Kepler and Copernicus remained sharp. These bouts of variation were 1-2min in duration. At 23:56UT when he checked again the periodic blurrings of the bands were still present. The observer suspected atmospheric effects. M.Cook (Frimley, UK) observed 22:00-22:30 and could see only 2 bands on the west wall - but this may have been because of poor transparancy. The ALPO/BAA weight=1.
Aristarchus 1964 Oct 23 UTC 02:35-02:45 Observed by Bartlett (Baltimore, MD, USA, 3" refractor, 133 & 200x, S=3-5, T=4) "South floor region granulated, 6 deg bright with very faint trace of pale yellow color; rest of crater 8 deg bright." NASA catalog weight=4 (good), NASA catalog ID #859.
In 1962 Sep 16 at UT08:05 Spirad (Victoria, B.C., Canada, 48" reflector) obtained a spectrum with a UV emission, in H & K lines compared to Jupiter and Mars. II-AO plates, 6A/mm dispersion. Fraunhofer lines much shallower than planetary ones. (whole Moon). The Cameron 1978 catalog ID=770 and weight=5. The ALPO/BAA weight=4.
On 2013 Dec 19 N. Longshaw (Oldham, UK, Seeing III, TAK FS 78 APO Refracror) observed a diffuse area east of the central peak of Geminus, to be sepia/brownish tint. The ALPO/BAA weight=3.
On 1988 Jul 31 at UT 07:09-08:10 D. Darling (Sun Prairie, WI, USA, 12.5"reflector, seeing=7/10 and T=3) did not detect the dark region on the south east floor of Proclus (the TLP from a few days earlier), but did see 2 "linear mounds". The Cameron 2006 catalog ID=335 and the weight=0. The ALPO/BAA weight=1.
On 1959 Nov 17 at Ut 22:00 an unnamed observer saw a light in Plato. The Cameron 1978 catalog ID=725 and weight=1. The ALPO/BAA weight=1.
Macrobius 1971 Mar 15 UT 02:07-03:15 Observed by Sparks (Exmouth, UK, 6" reflector x400) "Strong pink color extending whole curve of crater's illum. wall, starting & ending in shadow side. Color grew deeper, then faded & ended at 0315h. Changed eyepieces. No other feature had this tho. looked for. Survived many separate powers of eyepieces." NASA catalog weight=2 (low). NASA catalog ID #1289.
Gassendi 1966 Sep 03 UT 01:11-01:46 Observers: Moore (Armagh, N. Ireland, 5 & 12" reflectors), Moseley (Armagh, N. Ireland, 10" refractor), Corralitos Observatory (B.Middlehurst, Organ Pass, NM, USA, 24" reflector), Cave , Gill (UK? 6" reflector x365), "Eng. moon blink sys. detected red glows on c.p. & round it. Independently seen by Cave. Not confirmed by Corralitos M.B." NASA catalog ID#975, NASA weight=5. ALPO/BAA weight=4.
In 1963 Oct 05/06 at UT 23:35-00:45 Scarfe (Cambridge, UK, 36" reflector, transparency: hazy - high cirrus) observed very strong luminescence at 50% of the total light (recorded photo-electrically) at Hydrogen alpha (656nm), Sodium-D (589nm) and Fe(RMT 15) 539.71nm, 542.97nm, 543.45nm, 544.69nm, 550.15nm, and 550.68nm. The Cameron 1978 catalog ID= and weight=5. The effect was especially strong in Aristarchus at 545.0nm. The Cameron 1978 catalog ID=776 and weight=5. The ALPO/BAA weight=5.
In 1963 Oct 05/06 at UT 23:35-00:45 Scarfe (Cambridge, UK, 36" reflector, transparency: hazy - high cirrus) observed very strong luminescence in Copernicus at 50% of the total light (recorded photo- electrically) at Hydrogen alpha (656nm), Sodium-D (589nm) and Fe(RMT 15) 539.71nm, 542.97nm, 543.45nm, 544.69nm, 550.15nm, and 550.68nm. The Cameron 1978 catalog ID= and weight=5. The Cameron 1978 catalog ID=776 and weight=5. The ALPO/BAA weight=4.
In 1963 Oct 05/06 at UT 23:35-00:45 Scarfe (Cambridge, UK, 36" reflector, transparency: hazy - high cirrus) observed very strong luminescence in Kepler at 50% of the total light (recorded photo- electrically) at Hydrogen alpha (656nm), Sodium-D (589nm) and Fe(RMT 15) 539.71nm, 542.97nm, 543.45nm, 544.69nm, 550.15nm, and 550.68nm. The Cameron 1978 catalog ID= and weight=5. The Cameron 1978 catalog ID=776 and weight=5. The ALPO/BAA weight=3.
Aristarchus 1970 Apr 24 UTC 07:00 Observed by Thomas
Aristarchus 1961 Nov 27 UTC 23:30 Observed by Kozyrev (Crimea, Soviet Union) described in NASA catalog as: "Emission lines in spectrum of c.p. in red & blue, H2 identified, (he had obtained C2 & Swan bands in Alphonsus in '58 & '59" 50" reflector used. NASA catalog weight=5 (very high). NASA catalog TLP ID No. #755.
On 2009 Jun 11 at UT01:00-01:15 C. Brook (Plymouth, UK, 2" refractor, x25, seeing excellent and no cloud or haze) obsrved fluctuations in the brightness of Aristarchus crater. No brightness fluctuations were seen elsewhere. The ALPO/BAA weight=1.
Aristarchus 1964 Aug 26 UT 02:00-03:00 Observed by Genatt, Reid, (Greenbelt, MD, 16" reflector, x360, S=P-G), and Lindenblad (Washington, DC, USA, 26" refractor) "Red and Blue bands. Grew thinner & shorter. Alerted Naval Obs. One obs. tho't he saw Phenom. but not sure. (confirmation ?). (prof. astronomers, but not lunar observers)" NASA catalog weight=5 (very high). NASA catalog ID #844. ALPO/BAA weight=3.
In 1957 Feb 10 at UT 22:00 an unnamed observer repirted a TLP somewhere on the Moon. The reference for this comes from: Palm, A. 1967, Icarus,& (2), p188-192. The cameron 1978 catalog ID=662 and weight=0. The ALPO/BAA weight=1.
Atlas 1954 Mar 23 UTC 00:00? Observed by Delmotte (France?) "Violet tint in crater" NASA catalog weight=3 (average). NASA catalog ID #562.
Aristarchus 1979 Nov 07/08 UT 23:10-00:00 Observed by R.H. Ricketts (Lewis, Sussex, UK, 10" reflector, x300, Seeing Antoniadi II) - obscuration and colouration seen. ALPO/BAA weight=2.
Near Aristarchus 1970 Mar 26 UT 17:00 Observed by Sekiguchi, Maisumoto (Tokyo, Japan, 36" reflector) "Pts. N & S of crater were brighter by 0.3 & 0.2 mag. respectively than normal -- far beyond limits of error. Color index (CI) also showed less depend. on phase by 0.1-0.2 mag. Did not show reddening dur. enhancement. Polariz. was less by 1-2%. Photog. photom. showed brightening over whole moon. Resolution = 2,3 km" NASA catalog weight=5 and catalog ID #1236. ALPO/BAA weight=3.
North of Kepler 1970 Mar 26 UT 17:00 Observed by Sekiguchi, Maisumoto (Tokyo, Japan, 36" reflector) "Photog. photom. showed brightening over whole moon. CI N. of Kepler enhanced by 0.5 mag. Resolution = 2,3 km" NASA catalog weight=5 (Very high). NASA catalog ID #1236.
1886 Oct 16 UTC 22:00 Observed by Lihou (France?) "Unusual phenomena ? (drawing)" Ref Sirius, Vol 20, 45 p69 (1887). NASA catalog weight=1 (very low). NASA catalog ID #252. ALPO/BAA weight=1.
Plinius 1889 Sep 13 UTC 23:00? Observed by Thury (Geneva, Switzerland) NASA Catalog Event #265, NASA Weight=3 (Average) Event described as: "Unusual black spot with intensely white 4" border over CP. Normal aspect is 2 craters. #260 says that Gaudibert saw same thing in Sep. - confirmed". References: Nature 41, 183, 1890 (April). The ALPO/BAA weight=1, this is probably perfectly normal.
Plato 1915 Apr 03 UTC 23:00? Observed by Markov (Russia) NASA catalog describes observation: "Appearance of bright spots that could even be seen in a 43mm (2-in) tube" 2" refractor used. NASA catalog weight=2. NASA catalog TLP ID NO. #350. ALPO/BAA weight=2.
Plato 1982 Sep 07 UT 0330-0430. K.P. Marshall (Columbia, 12" reflector, seeing III) saw no craterlets on the floor of Plato, but what he considered unusual was an extremely bright short section of the north rim of Plato - far brighter than, any other part of the rim, and only slightly less bright than Mons Piton. ALPO/BAA weight=1.
On 1975 Mar 02 at UT05:00-06:18 P.W.Foley (Wilmington, Dartford, Kent, UK, 12" reflector) observed blueness along the southern wall of Plato. This is a BAA observation. Note that it is assumed that this is the same as Cameron's catalog 1975 Mar 02 UT 01:00 or 23:00 report by an Unknown English Observer who apparently observed colour in Plato (Red or violet). The Cameron 1978 catalog ID=1402 and weight=1. The ALPO/BAA weight=1.
Plato 1966 Aug 05/06 UT 23:37-02:58 Observers: Corvan, Moseley (Armagh, N.Ireland, 10" refractor, x280) and Ringsdore (England, 8.5" reflector) "Several red glows at different places at different times. Each lasted a few min. (not confirmed by Ringsdore. Given as 8/4 in MBMW) NASA catalog weight=4, NASA catalog ID=#964. ALPO/BAA weight=2.
On 1890 Oct 03 at UT 22:00 Muller of Germany saw in Posidonius an unusual shadow (Moon low? and crater in dark part-terminator 2 deg past west wall - according to Cameron). Cameron 1978 catalog ID=267 and weight=3. ALPO/BAA weight=2.
Copernicus 1955 May 12 UTC 03:40 Observed by Firsoff (Somerset, UK, 6.5" reflector x70) "Pico was invis. in violet filter. Copernicus was bright in it." NASA catalog weight=4 (high). NASA catalog ID #591.
Mt Pico 1955 May 12 UTC 03:40 Observed by Firsoff (Somerset, UK, 6.5" reflector x70) "Pico was invis. in violet filter. Copernicus was bright in it." NASA catalog weight=4. NASA catalog ID #591. ALPO/BAA weight=3.
Agrippa 1966 Sep 05 UTC 04:47-05:00 Observed by Bartlett (Baltimore, MD, USA, 5" reflector, 283x) "Within the wall shadow, the landslip was faintly illum., est. at 4, & distinctly brownish". S=6-1, T=3-1. NASA catalog weight=4 (good). NASA catalog ID #975.
On 1985 Sep 04 at UT 22:15 A.V. Arkhipov (Russia) detected a bright flash in Mare Tranquilitatis that lasted < 1 second and had a diameter of < 2 arc seconds i.e. the limit of seeing resolution. The Cameron 2006 catalog ID=280 and the weight=3. The ALPO/BAA weight=3.
Aristarchus 1961 Nov 27 UTC 23:30 Observed by Kozyrev (Crimea, Soviet Union) described in NASA catalog as: "Emission lines in spectrum of c.p. in red & blue, H2 identified, (he had obtained C2 & Swan bands in Alphonsus in '58 & '59" 50" reflector used. NASA catalog weight=5 (very high). NASA catalog TLP ID No. #755.
Alphonsus 2002 Sep 27 UT 00:00-02:15 Observed by Clive Brook (Plymouth, UK) "Central peak was bright 00:00 UT but had faded by at least 2 deg on the Schroter scale - no colour seen. Observer continued observing until 02:15 UT but central peak had dimmed considerably by then"
Aristarchus 1964 Aug 28 UT 04:30-04:50 Observed by Bartlett (Baltimore, MD, USA, 4" reflector x240) "Faint blue-viol. radiance on EWBS; dark viol. on nimbus. S.floor dull, 6, granulated, distinct yellow-brown; rest of crater 8 bright. NASA catalog weight=4. NASA catalog ID #847. ALPO/BAA weight=2.
1965 Oct 16 UTC 08:05-10:00 Observed by McLarin (Huntsville, AL, 20" reflector), Bates, Hall (Prt. Tobacco, MD, 16" reflector), Hardie (Nashville, TE, 30" reflector) "Color flashing pulsations intermittently detected by Trident MB device in Huntsville but not seen in Md, or vis. by Hardie when alerted. Pulsations in Cassini different from atmosphere" NASA catalog weight=2 (low). NASA catalog ID #906.
On 1975 Mar 04 UT 04:01-05:30 P.W. Foley (Wilmington, Dartford, Kent, UK, 12" reflector, seeing excellent, no turbulence, slight frost and mist) had a suspicion of blue on the entire north wall of Aristarchus crater - not seen visually but detected with a Moon Blink device. Crater extremely bright and unable to penetrate it visually. Surrounding areas charp. No red/orange on south wall. All other areas proved negative. Photographs taken. No change in appearance over this time. ALPO/BAA weight=2.
On 1975 Mar 04 at UT03:46-06:01 P.W.Foley (Wilmington, Dartford, Kent, UK, 12" reflector) observed bluesness along the southern wall of Plato. This is a BAA observation. The Cameron 1978 catalogue ID is #1403 and has a weight of 1. The ALPO/BAA weight=1.
On 1980 Oct 30 at UT03:19-03:41 P. Madej (Huddersfield, UK, 158mm f/4 reflector, seeing I-II, and transparency very good. Wratten 15 (yellow) and Wratten 35 (purple) used. No spurious colour seen). At 03:19UT, the observer noted that Mons Spitzbergen looked sharper at x52. At x72 bright flashes of a bright lunar gray to a light orange colour seen. BAA Lunar Section TLP team alerted. At 03:32UT a yellow filter used and the flashes were better seen, one flash approximately 20-30 sec apart. At 03:31UT Madej used a purple filter and could not see Mons Spitzbergen but did see the flashes (45-60 sec apart). cameron 2006 catalog TLP ID=118 and weight=3. ALPO/BAA weight=3.
Plato 1980 Oct 30 UT 05:00-0704 Observed by F.C. Butler (SW London, UK, seeing III, but worsening (but not as bad as IV) towards the end of the observing period, transparency 100% clear, 22cm Newtonian reflector, x144, x185). The floor seemed quite devoid of detail, apart from a vague mottling seen during the briefest moments of best seeing conditions. At the start of the observing period he could just glimpse the central craterlet at x185, but could not be sure. ALPO/BAA weight=1.
Alphonsus 1964 Oct 27 UTC 05:18-06:10 Observed by Hall, Johnson, Weresulk (Pt. Tobacco, MD, USA, 16" reflector x400, S=5-7). "Red spot. Pink glow detected with Trident MB & seen visually too." NASA catalog weight=5. NASA catalog ID #863.
On 1994 Apr 03 at 11:23UT D. Darling (Sun Praire, WI, USA) noticed that Copernicus crater had a red spot on the west wall (found using Moon Blink filters Wratten 29 and Wratten 38). The ALPO/BAA weight=3.
Alphonsus 1958 Dec 03 UTC 11:00? Observed by Alter, Mt Wilson, CA, USA, 60" reflector "Photog. spect. showed floor of crater redder than neighboring areas outside its walls. (Palm had a rep't for this date -- same area?). NASA catalog weight=4 (high). NASA catalog ID #710.
On 1994 Jan 04 at UT21:00 J. Nibbering (Rosendaal, Netherlands) obtained a photograph that shows a large crescent of light centred on Tycho crater, but includes also: Lilius, but not to Clavius. Cameron suspects strongly that it was caused by camera lens flare. The Cameron 2006 catalog ID=471 and the weight=5. The ALPO/BAA weight=1.
On 1981 Oct 21 at UT 11:35-11:48 B. Hobdell (St Petersberg, FL, USA, 10" reflector) found that the south peak of Plato on floor glowed white at 11:35UT, then a milky shade spread all aorind Plato's floor (previously completely shadow filled). The needle like shadows started to be indistiguishable through the sunlight (dawn on Earth). The cloud like feature was washed out by daylight at 11:48UT and conformed to the "white area except a tail that reached the cetre of Plato" Spurious colour was not seen. The Cameron 2006 catalog ID=157 and weight=3.
On 2009 Jun 16 at UT 03:20-03:40 P. Morgan (UK, 30.5cm reflector, x400, seeing=6/10 and transparency=5/5) observed a large diffuse ashen-like effect over the shadow filled floor of Plato. The effect was lighter towards the south. Observer checked the effect with both left and right eyes and it remained the same. Unusually no shadow spires from rim moutain peaks were seen. A check for colour in the region effected revealed none. As time progressed, terrestrial twilight encroached. A sketch was made. The ALPO/BAA weight=1.
On 1981 Oct 21 at UT13:40-13:45 D. Louderback (South Bend, WA, USA, 10" reflector) observed a cloud on the north east quadrant of Aristarchus crater, and also covered the bright spot on the east wall (Cameron says that the east wall bright spot is Bartlett's "EWBS". Louderback mentions that this TLP gave Aristarchus a diamond ring effect. The Cameron 2006 catalog ID=157 and weight=3. The ALPO/BAA weight=2.
Aristarchus appeared dimmer than normal. This report has an ALPO/BAA weight of 1.
Aristarchus 1961 Dec 3 UTC 03:05-03:40 Observed by Kozyrev (Crimea, Soviet Union) described in NASA catalog as: "Emission lines in spectrum of c.p. red & blue, H2 identified, several km2 area. Projected into shadow cast by W. wall. Source rose to a height above the crater. 50" reflector used NASA catalog weight=5 (very high). NASA catalog TLP ID No. #756.
On 1977 Dec 07 at 04:24UT (assuming that this is not local time) V.M. Chernov (Soviet Union) observed that the north cusp was more than 180 deg and a bright dot seen. Ashen light visible. Moon 3.5 days before New Moon. On 6th Dec at 04:20UT the cusp was seen to be normal. The ALPO/BAA weight=1.
On 1977 Dec 07 at 04:24UT (assuming that this is not local time) V.M. Chernov (Soviet Union) observed that the south cusp was more than 180 deg. Ashen light visible. Moon 3.5 days before New Moon. On 6th Dec at 04:20UT the cusp was seen to be normal. The ALPO/BAA weight=1.
were fainter. The third (about 0.066 deg from the northern limb) showed an erruption of fire or luminous matter. The brightness of this third volcano was much brighter than Mechain's comet. Webb thinks that these other two volcanos were Menelaus and Manilius. The Cameron 1978 catalog ID=32 and weight=4. The ALPO/BAA catalog weight=3.
were fainter. The third (about 0.066 deg from the northern limb) showed an erruption of fire or luminous matter. The brightness of this third volcano was much brighter than Mechain's comet. Webb thinks that these other two volcanos were Menelaus and Manilius. The Cameron 1978 catalog ID=32 and weight=4. The ALPO/BAA catalog weight=1.
were fainter. The third (about 0.066 deg from the northern limb) showed an erruption of fire or luminous matter. The brightness of this third volcano was much brighter than Mechain's comet. Webb thinks that these other two volcanos were Menelaus and Manilius. The Cameron 1978 catalog ID=32 and weight=4. The ALPO/BAA catalog weight=3.
On 1790 Jan 17 at UT 1800 Schroter (Lilienthal, Germany) observed a small hazt spot of light in the vicinity of Aristarchus crater. The 1978 Cameron catalog ID=65 and the weight=4. The ALPo/BAA weight=1.
On 1973 Feb 23 before UT 23:00 P. Moore (Selsey, UK) reported activity detected in Aristarchus. Fitton ovbserved from 23:40- 00:20 and obsrved nothing unusual except for a minute white area, about 1 km in diameter about 2km north of the central peak. This spot kept on coming and going in the seeing. Fitton regarded this as a permanent spot, although he had never noticed it before. Nor could Fitton see the colour that he had noticed on the previous night. A BAA report. ALPO/BAA weight=1.
A guest star trespassed against the moon. Cameron suspects that this was a meteor? ALPO/BAA catalog weight=1. Cameron 2006 catalog weight=0. Julian date 1356 May 03. Gregorian date 1356 May 11.
William Herschel and Mrs Lind saw a red, 4th magnitude brightness, less than 3 arc sec in diameter. Herschel believed that he was seeing a lunar volcano in eruption.
the previous night". Its diameter is less than 3" (5-6 km) as judged by comparing with the angular diameter of Jupiter and also Jupiter's third satellite (the diameter of the active part of the volcano was at least twice the angular diameter of Jupiter's Moon). The shape was an irregular round figure with very sharply defined edges. It resembled a small piece of burning charcoal, when it is covered by a thin coat of white ash. The other two volcanos were much further towards the centre of the Moon and resembled large faint nebulae that are gradually much brighter in the middle; but with no well defined luminous spot within them. These three spots are plainly to be distinguished from the rest of the marks upon the Moon; for the reflection of the Sun's rays from Earth is, in its present situation, sufficiently bright with a ten-foot reflector, to show the Moon's spots, even the darkest of them. Such similar phenomena were not perceived in the previous month, despite using the same telescope. The volcano was not as bright as his 4th May 1783 sighting (resembling a 4th magnitude star as seen with the naked eye), though the latter was smaller in diameter. Cameron's 1978 ALPO catalog has a TLP ID No. of 33 and a weight of 4. The ALPO/BAA catalog weight is 3.
the previous night". Its diameter is less than 3" (5-6 km) as judged by comparing with the angular diameter of Jupiter and also Jupiter's third satellite (the diameter of the active part of the volcano was at least twice the angular diameter of Jupiter's Moon). The shape was an irregular round figure with very sharply defined edges. It resembled a small piece of burning charcoal, when it is covered by a thin coat of white ash. The other two volcanos were much further towards the centre of the Moon and resembled large faint nebulae that are gradually much brighter in the middle; but with no well defined luminous spot within them. These three spots are plainly to be distinguished from the rest of the marks upon the Moon; for the reflection of the Sun's rays from Earth is, in its present situation, sufficiently bright with a ten-foot reflector, to show the Moon's spots, even the darkest of them. Such similar phenomena were not perceived in the previous month, despite using the same telescope. The volcano was not as bright as his 4th May 1783 sighting (resembling a 4th magnitude star as seen with the naked eye), though the latter was smaller in diameter. Cameron's 1978 ALPO catalog has a TLP ID No. of 33 and a weight of 4. The ALPO/BAA catalog weight is 2.
There were two other volcanos were much further towards the centre of the Moon and resembled large faint nebulae that are gradually much brighter in the middle; but with no well defined luminous spot within them. These three spots are plainly to be distinguished from the rest of the marks upon the Moon; for the reflection of the Sun's rays from Earth is, in its present situation, sufficiently bright with a ten-foot reflector, to show the Moon's spots, even the darkest of them. Such similar phenomena were not perceived in the previous month, despite using the same telescope. The volcano was not as bright as his 4th May 1783 sighting (resembling a 4th magnitude star as seen with the naked eye), though the latter was smaller in diameter. Cameron's 1978 ALPO catalog has a TLP ID No. of 33 and a weight of 4. The ALPO/BAA catalog weight is 2.
In 1824 May 01 at UT 21:00 Gobel (Koburg, Germany) observed near Aristarchus, a blinking light of magnitude 9-10, in Earthshine. The ALPO/BAA ID=99 and the weight=4. The ALPO/BAA weight=3.
East of Picard (56E, 15N) 1877 May 15 UT 20:30 Observed by an unknown observer (in England?) "Bright spot. (white patch) there unlikely to be bright at sunrise normally)." NASA catalog weight=3. NASA catalog ID #189. ALPO/BAA weight=2.
On 1978 Jan 12 at 08:21UT (assuming this is not local time) V.A. Golubev (Ussurian Sam Station, Vladivostock, Russia, x100) saw on the western edge of the Moon an occultation of the magnitude 6? star ZC2394. Just prior to the occultation, between the star and the dark limb could be seen a bridge of light. The ALPO/BAA weight=1.
Picard 2002 Sep 10 UT 02:30-03:21 Observed by Gray (Winnemucca, NV, USA, 152mm refractor x248,S=2-3, T=5) "observed in White light and through Wratten Red 25 and Blue #38A filters. The crater through the Red 25 filter looked very similar to the view in White light. Using the Blue 38A filter Picard almost dissapeared - it looked like a dim, faintly observable black spot with the sunlit, east facing west crater wall barely visible. Observer had not observed Picard very often, so was not too familiar with it but it seemed odd that it almost vanished through the blue filter." ALPO observational report. The ALPO/BAA weight=3.
In 1824 May 02 at UT 21:00-21:15 Gobel (Germany, seeing = excellent) saw near Aristarchus (47W, 23N) a soft (matte) light like a star seen through mist. Brightness increased suddenly to magnitude 9-10. After several seconds it became weak, finally disappearing. repeated this 3 to 4 times in 15 minutes. The Moon was a very narrow sickle shape and a major feature could be seen in Earthsine. The date given was 1821 but Cameron says it is 1824. The Cameron 1978 catalog ID=88 and weight=4. The ALPO/BAA weight=3.
In 1948 Aug 09 at UT 02:40 Woodward (Toronto, Canada, sky very clear) observed, using a telescope, a bright, bluish-white to greyish-yellow, 3 sec duration flash in Earthshine. The flash was between magnitude 0 to 1 if one were looking for a similar magnitude star in the sky without a telescope. There was possibly a very slight motion of the flash in a southerly direction. Also there were two terminal bursts. Cameron suggsts that this might have been a meteor? Ref: Moore, P.A. Guide to the Moon (1953), p117. The Cameron 1978 catalog ID=508 and weight=0. The ALPO/BAA weight=1.
Macrobius 1972 Apr 17 UT 20:10-20:45 Observed by Persson (Hvidore, Danmark, 2.5" refractor x58 & x100, seeing=good) "Macrob. was a white ring without outline or shadow. (shad. should have been seen--sun only up 5deg alt. Something was raising albedo from 0 to surround." NASA catalog weight=3 (average). NASA catalog ID #1328.
Proclus 1972 Apr 17 UT 20:10-20:45 Observed by Persson (Hvidore, Danmark, 2.5" refractor x58 & x100, seeing=good) "Proclus not as clear as usual" NASA catalog weight=3 (average). NASA catalog ID #1328.
On 1972 Apr 17 at UT 20:10-20:45 Hvidore (Denmark, 2.5" refractor, x58, x100, seeing=good) noted a brightening of the dark limb between Hercynian mountains and Cleostratus crater. Thought that it was due to atmospheric disturbance. Cameron says similar to other reports e.g. No. 1156. The Cameron 1978 catalog ID=1330 and weight=1. The ALPO/BAA weight=1.
On 1969 May 20 at UT 19:35-20:30 Gomez (Spain, 12" reflector) observed blue-white pulsating light in Aristarchus that illuminated the inner walls - it was maximum at 19:55UT. This observation was made during the Apollo 10 watch. The Cameron 1978 catalog ID=1128 and weight=5. The ALPO/BAA weight=2.