Aristarchus 1973 May 27 UTC 01:09-01:56 Observed by Theiss (51N, 9.67E, 75mm reflector) "3 diameters of Aristarchus around its center: orange bright area from 01:09-01:56" Ref: Hilbrecht & Kuveler, Moon & Planets Vol 30 (1984) p53-61"
Southern cusp obseved by H.Hill (UK) on 1984 Jul 25. Solar Selenographic colongitude=232.6. Observer noted a dusky ill- defined strip in Earthshine extending beyond the southern cusp that appeared "atmospheric". Note that this is almost certianly not a TLP but is worth checking out if the libration and solar colongitude is similar, just to verify that this is what the Moon normally looks like. ALPO/BAA weight=1.
South Cusp 1956 Mar 14 UT 19:00 Observed by Firsoff (Somerset, England, 5" reflector) "Twilight at S.cusp traced 640 km beyond cusp. No trace of twilight at N. pole" NASA catalog weight=4 (good). NASA catalog ID #635.
On 1969 Jul 17 atUT 03:00-03:25 Philips (Midland, TX, USA, 6" reflector) "Complete rim pulsating white light, @4-5th mag.Suddenly brightened at 0300h. Crater seemed to glow a brilliant white for @ 15m. 2 others confirmed from 0315-0325h. Resumed its normal appear. after fading gradually at 0325h. (author (WSC) noted nothing abnormal at 0100-0115h & couldn't disting. Aris. Apollo 11 watch)". The cameron 1978 catalog ID=1152 and weight=3. The ALPO/BAA weight=3.
On 1991 Apr 17 at UT 01:22-02:37 D. Spain (Fairdale, KY, USA, 3.5" refractor, x30-x111, S=5/10, T=5.5) observed (UT01:22-02:25) an orange flare and some brighenings in the crater Gassendi. With the naked eye he saw a glowing spot on the Earthshine side of the Moon. When he turned his telescope onto this he found out that this was Gassendi crater. By comparison, Aristarchus was just a small point. Herzog (Racine, WI, USA, 2.5" refractor, x28, S=G and T=6-7) confirmed Spain's observation UT 01:51-02:37?. Darling (Sun Praire, WI, USA, 3" refractor, x56, S=7/10, T=5) did not see anything unusual UT 02:15- 02:32?. Cameron speculates that the orange colour might be from the Moon's low altitude. The Cameron 2006 catalog ID=421 and the weight=1. The ALPO/BAA weight=1.
Mare Crisium 1973 Apr 05 UT 18:40-19:30 Observed by an unknown observer (Hungary), Hitchens (Lincolnshire, England, 11" reflector, Seeing=poor) and Peters (Kent, England, 8" reflector, Seeing=poor) "Saw a bright strip that extended deep into the dark side. Did not see it in May or June at same phases. Alignment same as E. boundary of M. Cris. Eng. Obs. at same time noted nothing." NASA catalog weight=1 (very low). NASA catalog ID #1364.
Aristarchus was extraordinarily bright. Cameron's 1978 catalog gives this TLP an ID of 34 and a weight of 1. The ALPO/BAA catalog assigns a weight of 1 too.
In 1920 Mar 22 at UT 17:00? an unknown observer in England noted an illumination on the dark side of the Moon. There was also some aurora on Earth at this time. The Cameron 1978 catalog ID-377 and weight=1. The ALPO/BAA weight=1.
On 1988 May 19 at UT01:14-02:30 D. Darling (Sun Praire, WI, USA, 7x35 binoculars) was able to see Copernicus OK, Kepler (only just) and Aristarchus was invisible in Earthshine. He could not see the usual bright areas in Earthshine either. D. Spain (Fairdale, KY, USA, 3.5"reflector, x30-277) could not see anything in Earthshine. Lubke (Middleton, WI, USA, 8" reflector, x75 and x130) though was able to see Aristarchus and it was brighter than its surroundings, however it was a lot fainter than on the 18th May. Cameron suspects that this was atmospheric in origin and not a TLP. The Cameron 2006 catalog ID=329 and weight=0. The ALPO/BAA weight=1.
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.
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.
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 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 1973 Apr 06 at UT19:34-19:40 E. and C. Moore (England?, UK) and Hitchens (Lincolnshire, UK, 11" reflector) observed the following in Aristarchus crater: "Unusual brightness . Att'n drawn from occultation. Had a bright pt. of mag. 7 as if slightly defocussed star, yellowish in color on NE (IAU?) rim. Brightened & expamded. Later scintillate. Wife called, each idep. drew same phenom. Hitchens also saw glowing in same time period (indep. confirm.)". The Cameron 1978 catalog ID=1365 and weight=5. The ALPO/BAA weight=3.
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.
On 1788 Apr 09 UT 20:00-21:00 Schroter (Liienthal, Germany) observed a bright spot 26" N of Aristarchus rim. Glimmering point became nebulous in Herschellan telescope at 161x. Changes were seen and it was brighter than Aristarchus. The was a confirmed observation by Schroter and Bode? The Cameron 1978 catalog ID=42 and the weight=5. The ALPO/BAA weight=4.
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.
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 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.
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.
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 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.
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.
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.
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 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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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 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 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.
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.
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 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.
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.
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.
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.
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.
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.
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.
On 1993 Mar 31 at UT19:35-21:15 J. Knott (England, UK, 8.5" reflector, x180 and x216, seeing=II and Transparency=good) the central peak of Alphonsus appeared to be bright but the observer was not confident enough to initiate a TLP alert. The Cameron 2006 catalog ID=458b and weights=1. The ALPO/BAA weight=0.
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.
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.
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 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.
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.
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.
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 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.
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.
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 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.
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.
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.
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 02:34-02:37 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 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.
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.
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.
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.
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 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.
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
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.
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 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 - 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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Aristarchus 1970 Apr 24 UTC 07:00 Observed by Thomas
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.
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.
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.
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.
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.
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 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.
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"
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 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 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 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.