TLP Repeat Illumination/Libration and Earthshine predictions for: Iceland - Reykjavik



Ill is percentage illumination of the Moon
*Indicates a repeat illumination and libration event to within +/- 1 deg for both
A non-* indicates just repeat illumination to within +/-0.5 deg


2025-May-01 UT 00:10-02:29 Ill=14% Aristarchus observed by Fryback_D on 1988-4-20 *

     On 1988 Apr 20 at UT02:06-03:00 D. Fryback (Madison, WI, USA, 8" 
     reflector, S=3-4) commented that Aristarchus crater looked like a "city 
     from high above "glowing under a cloud". Spain (Fairfield, KY, USA, 8" 
     reflector, S=VG) detected a streak and flashes but reports that the 
     crater was not "glowing", though it was the brightest feature in the 
     Earthshine, but Kepler and Copernicus were bright too. Aristarchus was 
     brighter in shorter exposures than in longer exposures. The Cameron 
     2006 catalog ID=326 and weight="confirmed". The ALPO/BAA weight=2.


2025-May-01 UT 21:43-22:59 Ill=22% Aristarchus observed by Gobel on 1824-5-2

     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. 


2025-May-01 UT 21:43-21:56 Ill=22% Macrobius observed by Persson on 1972-4-17

     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.


2025-May-01 UT 21:43-21:56 Ill=22% Proclus observed by Persson on 1972-4-17

     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.


2025-May-01 UT 21:43-21:56 Ill=22% W_Limb observed by Hvidore on 1972-4-17

     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.


2025-May-01 UT 21:43-22:21 Ill=22% Aristarchus observed by Darling_D on 1990-6-27

     On 1990 Jun 27 at UT02:17-03:00 D. Darling (Sparta, WI, USA, 3" 
     refractor, x36) reported that the crater had "Flared up at 0225 as a 
     point of light then went down" - the effect was fairly brief. 
     Earthshine was quite clearly seen and all features elsewhere were 
     normal. The Cameron 2006 catalog ID=405 and the weight=0. The ALPo/BAA 
     weight=1.


2025-May-01 UT 22:17-23:32 Ill=23% Aristarchus observed by Emanuel on 1965-7-3

     In 1965 Jul 03 at UT 04:25-05:34 Emanuel (West Covina, CA, USA, 4.5" 
     reflector) observed 4th magnitude star-like flashes and pulsations 
     coming from Aristarchus. Cameron says this confirmed and that the date 
     in MBMW is 7/2/65 which is local time = 3rd UT. The Cameron 1978 
     catalog ID=882 and weight=3. The ALPO/BAA weight=3.


2025-May-01 UT 23:29-00:11 Ill=23% Aristarchus observed by Gomez on 1969-5-20

     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.


2025-May-01 UT 23:04-00:13 Ill=23% Earthshine: sporadic meteors

2025-May-02 UT 21:46-23:21 Ill=33% Posidonius observed by Gruithuisen_F on 1821-4-7 *

     Posidonius 1821 Apr 07 UTC 18:00? Observed by Gruithuisen (Munich, 
     Germany) "Small bright crater in it was shadowless. Schroter also saw 
     it shadowless several X" NASA catalog weight=4 (good). NASA catalog ID 
     #87. ALPO/BAA weight=3.


2025-May-02 UT 21:46-22:40 Ill=33% Cyrillus_G observed by Paynter_L on 1983-8-13 *

     Cyrillus G 1983 Aug 13 UT  20:17-20:59 L. Paynter (Radcliffe, 
     UK, 22cm reflector, seeing III or better, transparency good). 
     Cyrillus G was relatively bright and surrounded by a shaded 
     area. On increasing the magnification from x65 to x130 he became 
     aware of a diffused "carise" colouration, in and around the 
     crater. The colouration was similar though to other spurious 
     colour on the Moon, but unlike other areas affected by spurious 
     colour, was more diffuse and spread out and not so concentrated. 
     In view of some uncertainty by the observer, ALPO/BAA weight=1.


2025-May-02 UT 21:46-22:33 Ill=33% Montes_Recti observed by Smith_G on 2009-3-1

     On 2009 Mar 01 at UT 18:50-21:00 G. Smith (East Yorkshire, UK, 127mm 
     Maksutov Cassegrain telescope with zoom eyepiece and later a Plossl 
     eyepiece) observed an area between Plato and Sinus Iridum to be glowing 
     as a bright nebulous patch. It was brighter than anything else in 
     Eartshine. A change in eyepiece did not affect the appearance of the 
     nebulous patch. The patch had faded somewhat by 21:00UT. The observers 
     brother attempted to observe the patch through a 114mm reflector at 
     20:30UT but the optics were of poor quality and the effect was not 
     seen. BAA observers were alerted, but only after the event had faded - 
     they made observations from 22:00-23:46 UT but failed to detect 
     anything unusual in the region concerned. The ALPO/BAA weight=1.
     This may have been a mis-identification with Aristarchus - however 
     we cannot be 100% sure.


2025-May-02 UT 21:47-23:03 Ill=33% Aristarchus observed by Gridley on 1965-7-4

     In 1965 Jul 04 at UT 03:53-05:59 Gridley, Welch (West Covina, CA, USA, 
     4.5" and 8" reflector, seeing=excellent), Albert (CA, 8" reflector, 
     x375) and Emanuel (8" reflector) observed star-like flashes in 
     Aristarchus crater. Cameron says this confirmed and that the date 
     in MBMW is 7/3/65 which is local time = 4th UT also but is in error due 
     to misreading of handwriting. The Cameron 1978 catalog ID=883 and 
     weight=3. The ALPO/BAA weight=3.


2025-May-02 UT 21:54-23:13 Ill=33% Posidonius observed by Andre on 1963-10-22

     In 1963 Oct 22 at UT 21:00? Andre (Belgium, 2.25" refractor) noticed 
     that Posidonius A's shadow was not seen when it should have been seen. 
     The Cameron 1978 catalog ID=777 and weight=3. The ALPO/BAA weight=2.


2025-May-02 UT 22:58-00:32 Ill=33% Aristarchus observed by Reiland on 1975-3-18

     On 1975 Mar 18 at UT 00:57-04:00 Reiland, Brown and Lojeck (Pittsburgh, 
     Pennsylvania, 6" reflector x45 and 8" reflector x200, photos taken) 
     observed the following at Aristarchus: "While obs. Earthshine on moon, 
     saw it glowing -- a bright steady star-like glow, est. at 5-8th mag. 
     First noted at 0057h. Obs. other obj. then came back to it. It was 
     still there -- till moonset (@0500h). Saw it in other telscopes & 
     Lojeck took photos. (photo shows Aris. prominent, but also LaLande, 
     Pytheas & Timocharis. 2 prs. in Aris. but there are other pts on the 
     print, it may be grain)". The Cameron 1978 catalog ID=1404 and 
     weight=5. The ALPO/BAA weight=2.


2025-May-02 UT 23:45-00:50 Ill=33% S_Pole observed by Dzapiashvili on 1969-7-19

     South Cusp 1969 Jul 19 UT 17:55-19:10 Observed by Dzapiashvili 
     (Georgia, Soviet Union) "Saw an abnormally bright spot at end of 
     S.cusp. Polariz. meas. at 8.3% at 1845-1847h (Apollo 11 watch?)"
     NASA catalog weight=5 (very good). NASA catalog ID #1164.


2025-May-02 UT 23:55-00:50 Ill=33% Aristarchus observed by Brandli on 1969-5-21

     On 1969 May 21 at UT 20:00-21:00 Brandli and Germann (Switzerland, 6" 
     refractor) observed a slow orange-red blinking on the surrounding area 
     of Aristarchus. It was seen less markedly the next night. Wald (Zurich, 
     Switzerland) noted at 20:30UT that the crater was pink (Confirmation 
     says Cameron) - this was during the Apollo 10 watch. The cameron 1978 
     catalog ID=1131-1132 and weight=5. The ALPO/BAA weight=4.


2025-May-03 UT 00:28-00:50 Ill=34% Fracastorius observed by Robinson_JH on 1973-3-9

     Fracastorius 1973 Mar 09 UT ~19:57 Robinson (Devon, UK) saw a 
     Moon Blink (colour) in this crater. This crater is long 
     suspected of giving permanent blinks due to natural colour. The 
     ALPO/BAA weight=1.


2025-May-03 UT 00:35-00:50 Ill=34% Aristarchus observed by Pruss on 1969-7-19

     On 1969 Jul 19 at UT 1845-18:47 Pruss and Witte (Bochum, Germany, 6" 
     refractor x36 and binoculars) saw brightenings in the north west wall 
     of Aristarchus for 3-7 seconds of about 1 magnitude over the 
     background. From orbit at UT 18:46 the Apollo 11 crew Armstrong, 
     Aldrin, and Collins (in orbit around the Moon and using the naked eye) 
     were asked to take a look at Aristarchus after Earth-based reports of 
     TLP activity. Armstrong reported (after the solar corona had set, on 
     the night side) that probably Aristarchus "to be considerably more 
     illuminated than the surrounding area. It just has - seem to have, a 
     slight amount of flourescence to it". Collins reported a moment later: 
     "Looking out on the same area now. Well at least there is one wall of 
     the crater that seems to be more illuminated than the others. I am not 
     sure that I am actually identifying any phosporesecence, but that 
     definitely is lighter than anything else in the neighborhood". Houston 
     then asked if the crew could detect any colour and if the inner wall 
     was the inner or outer part? Aldrim  commnted that it was the inner 
     wall and Collins mentioned thatno colour was incolved. The Cameron 1978 
     catalog ID=1165 and weight=5. The ALPO/BAA weight=3.


2025-May-02 UT 23:08-00:52 Ill=34% Earthshine: sporadic meteors

2025-May-03 UT 21:49-23:07 Ill=43% Cepheus_A observed by Collins_M on 2000-10-4

     Cepheus A 2000 Oct 04 UTC 08:15-08:50 Observer: Maurice Collins 
     (New Zealand, 90cm ETX) - observer noted that crater was 
     extremely bright - wasn't sure if this was normal and at the 
     time rated it as the brightest (contrasty?) crater that he had 
     ever seen on the Moon. Many years later he suspected that he may 
     have mis-identified the crater. This still leaves us with thr 
     problem as to why a crater should be so bright in this region, 
     and if so, which one? ALPO/BAA weight=1.


2025-May-03 UT 23:13-00:59 Ill=44% Censorinus observed by Foley_PW on 1984-7-4

     On 1984 Jul 04 UT 22:08-23:09 Foley (12" reflector, Kent, UK) found 
     that Censorinus gave a low brightness CED reading of 58%, despite all 
     other measured points on the Moon as being normal. M. Cook (Frimley, 
     UK) found Censorinus to be extremely dull compared to Proclus. J.D. 
     Cook (Frimley, UK) found Censorinus to be quite dull, barely above 
     background levels. The Cameron 2006 catalog ID=246 and the weight=4. 
     The ALPO/BAA weight=3.


2025-May-03 UT 23:13-00:59 Ill=44% Theophilus observed by Richardson on 1984-7-4

     On 1984 Jul 04 at UT 22:05-23:09 Richardson (Swinton, Yorkshire, UK, 
     seeing=VE) found that a peak west of Theophilus crater had a deep blue 
     colour, and this was strange because no colour was seen elsewhere on 
     the Moon. Foley (Kent, UK, 12" reflector), once alerted, found a dome 
     east of Kant? to be blue, and likewise no colour was seen elsewhere on 
     the Moon. Cameron 2006 catalog ID=246 and the weight=4. The ALPO/BAA 
     weight=3.


2025-May-03 UT 23:13-00:59 Ill=44% Torricelli_B observed by Foley_PW on 1984-7-4

     On 1984 Jul 04 UT 22:08-23:09 Foley (12" reflector, Kent, UK) found 
     that Torricelli B was a much lower brightness than was expected and 
     this remained the case for the rest of the lunation. The Cameron 2006 
     catalog ID=246 and the weight=4. The ALPO/BAA weight=1.


2025-May-04 UT 00:12-01:12 Ill=44% Helicon observed by Novet on 1788-3-13

     Lunar volcano, seen on the dark side, as bright as a 
     6th magnitude star,


2025-May-04 UT 00:12-01:12 Ill=44% Riccioli observed by Schroter on 1788-3-13

     A bright spot was seen. Cameron 1978 catalog
     ID=40 and weight=3. ALPO/BAA catalog weight=2.


2025-May-04 UT 00:31-01:12 Ill=44% Theophilus observed by Delaye on 1969-7-20

     Theophilus 1969 Jul 20 UT 18:40 Observed by Delaye, Thinon, Donas, ?
     ourdan (Marseilles, France, 10" refractor x60) "Saw a flash on the c.p. 
     of mag 1.0, duration 0.1s, no color. (meteor?) (Apollo 11 watch)".
     NASA catalog weight=1 (very low). NASA catalog ID #1174.


2025-May-04 UT 00:41-01:12 Ill=44% Aristarchus observed by Wald on 1969-5-22

     On 1969 May22 at UT2045-2105 Wald (Zurich, Switzerland) observed the 
     pinkish colour in Aristarchus was less marked tonight. The astronauts 
     were alerted and at 22:12 reported no activity but could see the crater 
     and Earthshine was strong near the terminator. Apollo 10 watch, 
     spacecraft far from the terminator. The Cameron 1978 catalog ID=1134 
     and the weight=2. The ALPO/BAA weight=2.


2025-May-04 UT 01:08-01:12 Ill=44% Censorinus observed by Marshall_KP on 1984-7-5

     On 1984 Jul 05 at UT 00:00-01:25 Marshall (Medelin, Columbia, 
     seeing=II) observed that Censorinus was much less bright than Proclus 
     (confirmed by CED readings). Cameron 2006 catalog ID=247 and weight=3. 
     ALPO/BAA weight=1.


2025-May-04 UT 01:08-01:12 Ill=44% Proclus observed by Marshall on 1984-7-5

     On 1984 Jul 05 at UT 00:00-01:25 Marshall (Medelin, Columbia) found 
     Proclus to be much brighter than Censorinus (which of the two was 
     abnormal is a question) - though he thought that Censorinus looked 
     dull. The Cameron 2006 catalog ID=247 and weight=3. The ALPO/BAA 
     weight=1.


2025-May-03 UT 23:13-01:28 Ill=45% Earthshine: Eta Aquarids: ZHR=40 (vel=66 km/s) & (radio) N&S Omega Cetids)

2025-May-04 UT 21:53-22:19 Ill=54% Albategnius observed by Schnuchel on 1972-6-18

     Albategnius 1972 Jun 18 UTC 19:20-19:25 Observed by Schnuchel (13.25E, 
     52.5N, 20x60 binoculars?) "Bright area at the inner N wall, diminution 
     of brightness well observable" S=4 T=4. Ref: Hilbrecht & Kuveler Moon & 
     Planets (1984) Vol 30, pp53-61.


2025-May-04 UT 21:56-23:49 Ill=54% Mare_Crisium observed by Williams_AS on 1882-3-26

     A.S.Williams of West Brighton, UK, using a 2.75" Acromatic refractor 
     (x75, definition good, but it was too windy to use the 5.25") noticed 
     that the mare was a mass of light streaks and spots. This was not 
     considered unusual, but these features were unusually plain, distinct 
     and brught, especially the streaks. The observer could not recall 
     seeing the streaks so bright and clear with this instrument before, and 
     indeed hardly ever with the larger 5.25" telescope. The observer 
     continued to observe Mare Crisium on many nights for several months and 
     comments that such an unusual exhibition was later seen perhaps once 
     every 2-3 lunations. They are uncertain how much this effect depends 
     upon the state of the Earth's atmosphere. This TLP does not make it 
     into the Cameron 1978 catalog and so may not be a TLP - however it has 
     been included, just in case, and to try to understand what was actually 
     seen. ALPO/BAA weight=1.


2025-May-04 UT 22:15-00:01 Ill=54% Censorinus observed by Cook_AC on 1984-7-5

     Censorinus 1984 Jul 05 UT 21:05-21:25 Observed by Cook (24" reflector 
     with line scan photodiode array at Mill Hill observatory, London) "Two 
     line scan photodiode array images were taken which used the motion of 
     the Moon to build up an image. The first image at 21:25UT did not 
     include all of Censorinus, but the part that it did include was not 
     very bright. The 21:25UT image did include all of Censorinus and the 
     crater was bright, including the part that was just visible in the 
     previous image. Possibly the seeing was worse at 21:05? and this could 
     explain the brightness descrepency, but it is worth checking again by 
     taking images at the same illumination conditions" BAA Lunar Section 
     report. At 21:17 M. Cook (Frimley, UK) found Proclus to be brighter 
     than Censorinus (more so than the previous night) and obtained variable 
     readings for Censorinus. Cameron 2006 catalog ID=247 and weight=3. 
     ALPO/BAA weight=2.


2025-May-04 UT 22:34-23:49 Ill=54% Proclus observed by Kern on 1972-6-18

     Proclus 1972 Jun 18 UTC 20:50-21:15 Observed by Kern (8.75E, 48.25N, 
     60mm refractor) "Yellow to white bright pattern at the NW wall, visible 
     only occasionally" S=4, T=3 Ref: Hilbrecht & Kuveler Moon & Planets 
     (1984) Vol 30, pp53-61.


2025-May-04 UT 23:27-00:58 Ill=54% Cassini observed by Knopp on 1885-2-21

     Knopp of Paysandu, Uruguay on 1885 Feb 21 at 23:00-23:30? UT saw red 
     patches in the crater. Reddish smoke or mist. The observer says several 
     others had seen a star like point there that night. Cameron's 1978 
     catalog ID=348 and weight=4. ALPO/BAA weight=3.


2025-May-04 UT 23:28-01:20 Ill=54% Rimae_Triesnecker observed by Gordeenko on 1912-5-23

     Triesnecker Rille 1912 May 23 UT 18:00? Observed by Gordeenko 
     (Russia) "Change in shape from representation by Brenner and 
     Krieger not accountable by lighting conditions" NASA catalog 
     weight=0. ALPO/BAA weight=1. NASA catalog ID #339.


2025-May-04 UT 23:18-00:59 Ill=55% Earthshine: Eta Aquarids: ZHR=40 (vel=66 km/s) & (radio) N&S Omega Cetids)

2025-May-05 UT 01:02-01:22 Ill=55% Mons_Piton observed by Smith_T on 2022-8-4

     Mons Piton 2022 Aug 04 UT 19:41-20:10 T. Smith (Codnor, UK, 
     16inch Newtonian, x247, Seeing IV) mountain was very bright 
     and red around its eastern slopes. An examination of the 
     bright and contrasty Proclus crater revealed that to be 
     relatively colour free compared to Piton. An examination of 
     other features, north and south along the terminator revealed 
     some tinge of coloiur but not as strong as on Mon Piton. Mons 
     Piton examined with a yellow filter at 19:50 and still showed 
     red along the eastern side, other features along the 
     terminator had no colour through the filter. Video images by. 
     A.Cook (Newtown, UK) made earlier at 1929 & 19:40 UT, (in the 
     SWIR (1.5-1.7 microns) did not reveal Mons Pico as especially 
     bright - but resolutioin was poor. A friend of Smith, phoned 
     up the next day to say that they saw a mountain on the limb 
     exhibiting red on the 14th August. Probably the redness was 
     due to atmospheric spectral dispersion as the Moon was low, 
     and it was especially visble on Mons Piton as this is an 
     exceedingly contrasty object on the terminator. ALPO/BAA 
     weight=1. 


2025-May-05 UT 01:22-00:00 Ill=55% Theophilus observed by Fox_WE on 1969-7-21

     Theophilus 1969 Jul 21 UT 19:30-21:45 and 21:00-22:00 Observed by Fox 
     (Newark, England, 6.5" reflector,) and Baum (Chester, England, 4.5" 
     refractor) (S=6, T=4) "At wall, adjacent to Cyrillus was a redish glow,
     then obscur. (Fox). Baum  saw intermittant white-blue shimmering as if 
     glowing thru dust glowing & upsurge in brightness on c.p. Gradually 
     faded to normal at 21:20. 1st time ever seen by him tho. obs. since 
     1947. Image sharp, no haziness. (indep. confirm. of activity, but 
     details differ, but same time, Apollo 11 watch)." NASA catalog 
     weight=5. NASA catalog ID #1180. ALPO/BAA weight=3.


2025-May-05 UT 21:56-22:39 Ill=64% Unknown observed by Von_Speisssen on 1887-11-23

     On 1887 Nov 23 at 16:15-17:00 UT Von Speissen & others of Berlin, 
     Germany, using a 3.5" refractor (x180), saw a "Triangular patch of 
     light (time in Middlehurst catalog wrong? Moonrise was at > 18:30h. If 
     year =1887, age=8.8 days & time OK. must be same observation as ID=256 
     in Cameron 1978 catalog - note similarity of names and also the 
     reference date). Cameron 1978 catalog ID=258 and weight=1.


2025-May-05 UT 21:56-22:07 Ill=64% Mons_Piton observed by Schneller on 1961-1-25

     Piton 1961 Jan 25? UTC 00:00? Observed by Schneller (Cleveland, Ohio, 
     USA, 8" x53) "Red obscuration concealing peak, @10mi sq (if near SR, 
     date is 27th; ancilary data given for 27th -- date not given)" NASA 
     catalog weight=3 (average). NASA catalog ID #731.


2025-May-05 UT 21:56-22:19 Ill=64% Ross_D observed by Harris on 1964-8-16

     SE of Ross D 1964 Aug 16 UT 04:18-05:20 Observed by Harris and 
     Cross (Whittler, CA, USA, 19" reflector?) "Bright area. 
     Condensations varying with time" NASA catalog weight=3. NASA 
     catalog ID #840. ALPO/BAA weight=3


2025-May-05 UT 21:56-23:03 Ill=64% Proclus observed by Madej_P on 1984-7-6

     Proclus 1984 Jul 06 UT 20:29-20:43 light green spot observed by Madej 
     (England) in the central region. No colour seen elsewhere. At 20:10 
     Foley (Kent, UK, 12" reflector) had seen a small extending of darkening 
     in the south east floor (not present 2 hours before) and a lot of fine 
     detail - though everything was normal again by 22:50UT. At 22:15 Amery 
     (Reading, UK) found a large dark spot on the south east floor. Other 
     observers: J and A.cook (Frimley, England) could not confirm but their 
     seeing was IV and tranparency was poor" Mobberley found no colour and 
     also no detail on the floor. BAA Lunar Section Report. Cameron 2006 
     catalog ID=248 and weight=3. ALPO/BAA weight=3.


2025-May-05 UT 22:03-23:57 Ill=64% Plato observed by Williams_AS on 1882-3-27

     Plato 1882 Mar 27 UTC 20:10-21:00 Observer: A.S. Williams (Brighton, 
     UK, 5.5" saw the shadow filled floor of Plato at Sunrise with a 
     "Glowing and curious milky kind of light". About 1 hour after sunrise 
     at Plato, there was no trace of this effect. The TLP filled the whole 
     floor except at a quarter of the diameter from the east wall which was 
     actually quite black. The observer saw a curious phosphorescent glimmer 
     at sunset (April11th?). Cameron comments that Birt, Nelson and Waugh 
     saw obsecuring mist or fog in Plato on many occasions. Cameron 1978 
     catalog ID=229 and weight=3. ALPO/BAA weight=3.


2025-May-05 UT 22:08-23:49 Ill=64% Plato observed by Bianchini on 1725-8-16

     A track of reddish light, like a beam, was seen
     crossing the shadowed floor of Plato.This TLP has an ID
     No. of 17 in Cameron's 1978 catalog and a weight
     of 3. It has an ALPO/BAA weight of 2.


2025-May-05 UT 22:37-23:23 Ill=64% Mons_Pico observed by Turner_S on 1979-9-29

     On 1979 Sep 29 at UT10:00-12:00 S. Turner (Maryborough, Australia) 
     observed a strong beacon like flash in white light that moved back and 
     forth in the east wall of Plato (very bright) and Mons Pico. tried 
     changing eyepiece and the field of view, but this wasn't the cause of 
     the effect. A check at 11:07UT did not show the effect, but it was back 
     again by 11:18UT being more pronounced at Mons Pico than the east wall 
     of Plato. SSW of Mons Pico was also blinking slightly. At 11:32 the 
     blinking effect was irregular 5-10 sec and this continued until 
     12:00UT. Cameron 2006 catalog ID=71 and weight=0 but she suggests 
     atmospheric scintillation as a cause. ALPO/BAA weight=1.


2025-May-05 UT 22:37-23:23 Ill=64% Plato observed by Turner_S on 1979-9-29

     On 1979 Sep 29 at UT10:00-12:00 S. Turner (Maryborough, Australia) 
     observed a strong beacon like flash in white light that moved back and 
     forth in the east wall of Plato (very bright) and Mons Pico. tried 
     changing eyepiece and the field of view, but this wasn't the cause of 
     the effect. A check at 11:07UT did not show the effect, but it was back 
     again by 11:18UT being more pronounced at Mons Pico than the east wall 
     of Plato. SSW of Mons Pico was also blinking slightly. At 11:32 the 
     blinking effect was irregular 5-10 sec and this continued until 
     12:00UT. Cameron 2006 catalog ID=71 and weight=0 but she suggests 
     atmospheric scintillation as a cause. ALPO/BAA weight=1.


2025-May-05 UT 23:28-00:49 Ill=64% Cassini observed by Knopp on 1885-2-22

     Knopp of Paysandu, Uruguay on 1885 Feb 22 at 23:00-23:30? UT saw a 
     definite light, looking like Saturn in Cassini?. The previous night he 
     had seen red  patches in the crater. Cameron's 1978 catalog ID=348 and 
     weight=4. ALPO/BAA weight=2.


2025-May-05 UT 23:33-00:34 Ill=64% Plato observed by Jones_SA on 1972-6-19

     Plato 1972 Jun 19 UT 21:40-22:30 Observed by S.A. Jones 
     (Swansea, Wales, 12" reflector x150) and Moore (Selsey, England, 
     12.5" reflector x450) "Noted a bright area in the center. Moore 
     noted nothing unusual & he tho't obs. saw one of permanent light 
     patches" NASA catalog weight=0 (very low). NASA catalog ID #
     1336. ALPO/BAA weight=1


2025-May-05 UT 23:23-00:02 Ill=64% Earthshine: (Radio) S. May Arietids & S. Omega Cetids

2025-May-06 UT 00:06-01:22 Ill=64% Mare_Anguis observed by Louderback_D on 1979-12-27

     On 1979 Dec 27 at UT 05:32 D. Louderback (South Bend, WA, USA, 6" 
     reflector x240, seeing=3-6/10 and T=4) noticed "2 small high-sun areas 
     nr. Eimmart - brightening around Mare Crisium, except for interior of 
     Proclus - in blue light. They were brighter than 2 spots on Cap. 
     Agarum rated 8.5 & Proc. 9. Not as bright next night. Probably a real 
     blue light brightening". Cameron 2006 catalog ID=79, location on Moon: 
     (70E, 23N) and weight=4. 


2025-May-06 UT 00:12-01:22 Ill=64% Plato observed by Brenner on 1895-5-2

     Plato 1895 May 02 UT 20:45, 23:45 Observed by Brenner and Fauth 
     (Germany?) "Streaks of light (Brenner) bright parallel bands in 
     center Fauth (indep. confirmation?)." NASA catalog weight=5. 
     NASA catalog ID #284. ALPO/BAA weight=1.


2025-May-06 UT 00:33-01:22 Ill=65% Ross_D observed by Harris on 1965-9-4

     On 1965 Sep 03 UT03:00-05:00 D.Harris (Located near Whittier 
     College, Whittier, CA, USA, using a 10" f/8.2 Newtonian 
     reflector, x78 & x208, seeing 5-6, transparency 2-0) observed a 
     ridge obscured SSW of Ross D. No drawing was made, only a 
     written description. "Ridge not visible near crater; possible 
     white patch 1/3 Ross D diameter" The ridge is the wrinkle ridge 
     extending NNE from Ross D, a well established often visible 
     feature. Harris comments that this was not one of the better TLPs 
     seen near Ross D, and there were no independent observers, 
     neverless he was ceratin of this being a TLP, and it was 
     consistant with other activity seen near this crater between 1964 
     and 1970. Cameron 1978 catalog ID 891 and weight=3. ALPO/BAA 
     weight=2.


2025-May-06 UT 00:48-01:22 Ill=65% Plato observed by de_Speissens on 1887-11-23

     Plato 1887 Nov 23 UT 20:00? Observed by de Speissens (France?) 
     "Luminous triangle on floor. Klein says it was sunlight affect. (but 
     similar to Klein's own obs., #190. Fort says never seen before nor 
     since)." NASA catalog weight=0 (very unlikely). NASA catalog ID #256.
     ALPO/BAA weight=1.


2025-May-06 UT 01:08-01:22 Ill=65% Censorinus observed by Nicolini on 1969-5-24

     Censorinus 1969 May 24 UTC 21:10-22:15 Observed by Jean 
     Nicolini (Sao Paulo, Brazil, 12" reflector) "It was brighter 
     than Proclus between 2130-2145h. A very tiny cirrus veil 
     present & Censor. appeared less bright & Proc. continued to 
     look normal. Weather worsened at 2215h. (Apollo 10 watch)." 
     NASA catalog weight=2. NASA catalog ID #1144. ALPO/BAA 
     weight=1.


2025-May-06 UT 21:59-23:40 Ill=73% Clavius observed by Cook_Miss on 1915-4-23

     Clavius 1915 Apr 23 UTC 20:00 Observed by Cook (England?) "Narrow 
     straight beam of light from crater A to B" NASA catalog weight=1 (very 
     poor). NASA catalog ID #352. ALPO/BAA weight=1.


2025-May-06 UT 22:59-23:54 Ill=73% Plato observed by Goddard_AV on 1932-4-15

     Plato 1932 Apr 15 UT 06:57 Observed by A.V. Goddard & friend 
     (Portland, Oregon, USA, 16" telescope, S=G steady) "Sudden 
     appearance of a white spot like a cloud of steam (in appearance 
     only), and in less than a minute it had spread in a NW 
     direction, until it almost reached the rim of the crater" NASA 
     catalog weight=4. NASA catalog ID #403. ALPO/BAA weight=4.


2025-May-06 UT 23:49-01:13 Ill=73% Tycho observed by Abel_P on 2009-5-3

     On 2009 May 03/10 UT23:20-00:11 P. Abel (Leicester, UK, 20cm reflector, 
     x312, seeing III-IV) observed that the north east wall was slightly 
     brighter than would have been expected, slightly blurred (not seeing 
     related blurring) and had a strong orange-brown colour. No spurious 
     colour seen elsewhere. A change in eyepieces showed the same effect. No 
     luck in alerting other observers. A drawing was made at 23:20UT and 
     finished at 00:12UT. At 23:12UT part of the inner NW floor had a dull 
     brown colour, whereas before it was grey.By 00:11UT the colour effect 
     was fading and by 00:18 seeing condirions were too bad to continue. M. 
     Cook (Mundesley, UK, 9cm Questar telescope, x80, x130, seeing III, 
     transparency moderate to good) had observed Tycho earlier in the 
     evening at 22:15UT, but had seen no signs of colour. W. Leatherbarrow 
     (Sheffield, UK, 8cm scope, high cloud interuptions and bad seeing) had 
     taken monochrome images at UT 20:07 and 20:10, but these showed nothing 
     unusual, and he checked the crater visually at 00:00-00:30, but 
     detected no colour, although the Moon's low altitude contibuted to poor 
     seeing conditions and some spurious colour was seen. CCD images from M. 
     Collins (Palmerston North, New Zealand) taken at 00:46UT showed 
     nocolour apart from spurious colour on contrasty edges, in no way 
     reflecting what was seen early by P. Abel. The ALPO/BAA weight=2.


2025-May-07 UT 22:02-22:46 Ill=81% Plato observed by Farrant_M on 1968-5-7

     Plato 1968 May 07 UTC 20:48-21:05 Observed by Farrant (Cambridge, 
     England, 8" reflector x220) "Red color No. of landslip in W. wall seen 
     in blink & vis. Vanished by 2105h. Had not returned at 2125. (Moore has 
     wrong date in his extended catalog.)." NASA catalog weight=3. NASA 
     catalog ID #1074.


2025-May-07 UT 22:02-23:12 Ill=81% Proclus observed by Moore_P on 1984-7-8

     On 1984 Jul 08 at UT 20:10-22:05 P. Moore (Selsey, UK, seeing IV-V)
     suspected that the floor of Proclus was slightly darker than normal. 
     The Cameron 2006 catalog ID=249 and the weight=1. The ALPO/BAA 
     weight=1.


2025-May-07 UT 22:12-23:12 Ill=81% Copernicus observed by McConnell_J on 1972-2-24

     South of Copernicus 1972 Feb 24 UT 19:30-20:00 Observed by McConnell 
     (England, 6" reflector, x195, seeing=good) "White spot just S. of Cop. 
     about same size as Copernicus H (@ 5km), (there is a bright area or mt. 
     SW of Cop. H)." NASA catalog weight=1 (very low). NASA catalog ID 1323.


2025-May-07 UT 22:18-00:08 Ill=81% Eudoxus observed by Unknown_Observer on 1882-1-29

     On 1882 Jan 29 at UT 17:00-17:30 an unknown observer noted an unusual 
     shadow in Eudoxus crater. The Cameron 1978 catalog ID=227 and the 
     weight=2. Reference: Sirius Vol 15, 167, 1882. The ALPO/BAA weight=2.


2025-May-08 UT 00:29-00:49 Ill=82% Plato observed by Farrant_M on 1969-5-26

     Plato 1969 May 26 UT 20:30-21:05 Observed by Farrant 
     (Cambridge, England, 8" reflector, x160, S=G) "Had misty 
     portion of SW(ast. ?) floor from 2030-2105h at which time it 
     was gone. Clearly seen, had ill-defined boundaries & was an 
     easy obj. to see. Alt.=33 deg. (Apollo 10 watch)." NASA 
     catalog weight=3. NASA catalog ID No. 1148. ALPO/BAA weight=1.


2025-May-08 UT 22:05-23:11 Ill=88% Plato observed by Moseley_T on 1966-9-25

     Plato 1966 Sep 25 UT 23:12-23:35 Observed by Moseley (Armagh, Nortern 
     Ireland, 10" refractor, x140) "Eng. moon blink sys. blinks inside the 
     crater. Very dubious due to low alt. of moon." NASA catalog weight=1 
     (very low). NASA catalog ID #982.


2025-May-08 UT 22:05-23:32 Ill=88% Gassendi observed by Whippey_MR on 1967-6-18

     Gassendi 1967 Jun 18 UT 22:50-23:59 Observed by Whippey 
     (Northalt, England, 6" reflector?) "Faint redness outside NE & 
     SE wall of crater." Moore (10" Armagh refractor, x360) was 
     observing earlier 22:10-22:40, with and without a Moon Blink but 
     detected no redness, however his observing conditions were not 
     very good at the time. NASA catalog ID #1039. NASA catalog 
     weight=3. ALPO.BAA weight=2.


2025-May-08 UT 22:50-23:43 Ill=88% Posidonius observed by Dzaplashvili on 1952-7-3

     Posidonius 1952 Jul 03 UT 19:13-19:27 Observed by Dzaplashvili, 
     Ksanforalif, Negrelishvili (Georgia, Soviet Union, 13" reflector, 
     polarimeter, S=clear) "Making polariz. mess. of it. Aristotles. 
     Eudoxus. & Aristillus. only Pos. gave higher rdgs. & oscillated while 
     others gave repeatedly same results. 40 other times Pos. was normal. 
     Never had seen such behavior Table gives deflections. Obs. repeated 2X 
     Obs. from 1843-1947h." NASA catalog weight=5. NASA catalog 
     ID #552. ALPO/BAA weight=5.


2025-May-12 UT 00:09-01:16 Ill=99% Vallis_Schroteri observed by Pickering_WH on 1891-9-17 *

     On 1891 Sep 17 at UT 18:00? Pickering, based at Arequipa, Peru, and 
     using a 12" reflector, saw in Schroter's Valley and the vicinity 
     "Varitions in vapor column. Crater D covered. (there are rays here -- 
     high sun effect on them?) Drawings. Time estimated from given 
     colongitude)." Cameron 1978 catalog ID=270 and weight=1. ALPO/BAA 
     weight=1.


2025-May-28 UT 23:05-01:09 Ill=5% Aristarchus observed by Lubke on 1988-5-18 *

     On 1988 May 18 at UT01:00-02:35 Lubke (Middleton, WI, USA, 8" 
     reflector, x130) reported that Aristarchus glowed "like an out of focus 
     star varying with the atmosphere". Darling (Sun Praire, WI, USA, 20x60 
     binoucular) and Spain (Fairdale, KY, USA, 7x35 and 20x60 binoculars, S=
     6/10) found that both Copernicus and kepler were brighter than 
     Aristarchus in Earthshine. Aristarchus itself looked unusual, though 
     Spain did not see Aristarchus at all. Darling and Wieir (20x60 
     binouculars) agreed that it appeared as a star-like point in 
     binoculars. Cameron 2006 catalog ID=326 and weight=0. ALPO/BAA 
     weight=1.


2025-May-28 UT 23:05-01:09 Ill=5% Copernicus observed by Darling_D on 1988-5-18 *

     On 1988 May 18 at UT01:00-02:35 Lubke (Middleton, WI, USA, 8" 
     reflector, x130) reported that Aristarchus glowed "like an out of focus 
     star varying with the atmosphere". Darling (Sun Praire, WI, USA, 20x60 
     binoucular) and Spain (Fairdale, KY, USA, 7x35 and 20x60 binoculars, S=
     6/10) found that both Copernicus and kepler were brighter than 
     Aristarchus in Earthshine. Aristarchus itself looked unusual, though 
     Spain did not see Aristarchus at all. Darling and Wieir (20x60 
     binouculars) agreed that it appeared as a star-like point in 
     binoculars. Cameron 2006 catalog ID=326 and weight=0. ALPO/BAA 
     weight=1.


2025-May-28 UT 23:05-01:09 Ill=5% Kepler observed by Lubke on 1988-5-18 *

     On 1988 May 18 at UT01:00-02:35 Lubke (Middleton, WI, USA, 8" 
     reflector, x130) reported that Aristarchus glowed "like an out of focus 
     star varying with the atmosphere". Darling (Sun Praire, WI, USA, 20x60 
     binoucular) and Spain (Fairdale, KY, USA, 7x35 and 20x60 binoculars, S=
     6/10) found that both Copernicus and kepler were brighter than 
     Aristarchus in Earthshine. Aristarchus itself looked unusual, though 
     Spain did not see Aristarchus at all. Darling and Wieir (20x60 
     binouculars) agreed that it appeared as a star-like point in 
     binoculars. Cameron 2006 catalog ID=326 and weight=0. ALPO/BAA 
     weight=1.


2025-May-29 UT 23:32-01:41 Ill=11% Aristarchus observed by Ward on 1821-5-4 *

     In 1821 May 04 at UT 21:30-22:00 Ward (England? Large aperture 
     telescope, x80), Bailey (England?) and Olbers (Bremen, Germany, 
     refractor) observed in the Earthlit part of the Moon an apperent small 
     comet like feature extended from Aristarchus towards Grimaldi. The 
     light was similar to a glow worm. The observer had never seen anything 
     like it. The cameron 1978 catalog ID=89 and weight=3. The ALPO/BAA 
     weight=4.


2025-May-30 UT 23:10-23:14 Ill=19% Plato observed by Schroter on 1788-4-9

     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.


2025-May-30 UT 23:10-23:14 Ill=19% Prinz observed by Schroter on 1788-4-9

     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.


2025-May-30 UT 23:10-23:14 Ill=19% Aristarchus observed by Welch on 1965-8-1

     On 1965 Aug 01 at UT 05:00 Welch (Table Mountain, CA, USA, 6" 
     reflector, seeing=excellent) observed some star-like flashes in 
     Aristarchus in ashen light. Cameron says 7/31/65 in MBMW=local time = 
     6/1/65 in UT. The Cameron 1978 catalog ID=886 and the 
     weight=2. The ALPO/BAA weight=2.


2025-May-30 UT 23:10-23:14 Ill=19% Aristarchus observed by Moore_E on 1973-4-6

     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.


2025-May-30 UT 23:10-23:11 Ill=19% Aristarchus observed by Spain_D on 1991-4-18

     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.


2025-May-31 UT 23:13-23:30 Ill=28% Plato observed by Schroter on 1788-4-10

     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.


2025-May-31 UT 23:13-23:30 Ill=28% Prinz observed by Schroter on 1788-4-10

     Bright point 26" N of Aristarchus rim. Resembled one
     near Plato but less conspicuous. The was a confirmed
     observation by Schroter and Bode?


2025-May-31 UT 23:13-23:23 Ill=28% Picard observed by Birt_WR on 1877-6-15

     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.


2025-May-31 UT 23:13-23:30 Ill=28% Aristarchus observed by Bornhurst on 1965-8-2

     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.


2025-May-31 UT 23:13-23:27 Ill=28% Hipparchus observed by Schnuckel on 1972-3-19

     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


2025-May-31 UT 23:13-23:59 Ill=28% Janssen observed by Marshall_KP on 1983-9-11 *

     On 1983 Sep 11 at UT 23:52 K.P. Marshall (Columbia, 12" 
     reflector, x268, seeing II), whilst sketching the crater 
     Janssen noticed a tenuous red patch on the southern junction 
     of the valley which joins Fabricius to A. Nothing resembling 
     this found on nearby areas. The ALPO/BAA weight=1.


2025-May-31 UT 23:25-23:30 Ill=28% Aristarchus observed by Grego_P on 2010-4-18

     On 2010Apr18 at UT 20:45-21:00 P. Grego (St Dennis, UK, 17" 
     reflector - first practice run) observed that Aristarchus in 
     Earthishine was the brightest that he had seen it before. The 
     effect had faded to normal in the next 15 minutes though. "The 
     bright spot was initially thought to be part of the wall of 
     Aristarchus, but on closer examination the spot was probably the
     crater’s central peak. At around this time I estimated the 
     brightness of the peak to be around magnitude 8, but this is a 
     poor estimate as no suitable comparison stars in the immediate 
     vicinity of the field of view were to be seen. Aristarchus’ 
     outline was visible, as was a clearly defined sweep of 
     brightness to its west (presumably the high albedo markings 
     southeast of Herodotus) and another illuminated area to the 
     north of Aristarchus (presumably the Vaisala area), and a small 
     illuminated patch on the eastern flanks of Aristarchus. No other 
     areas of the Moon in earthshine appeared to be as bright as 
     these markings, and there were certainly no other clearly-
     defined spots as brilliant as the one that lay in Aristarchus. A 
     watch was kept until 22:00 UT, when the Moon went out of view 
     behind a tree. During this period it appeared that the spot was 
     becoming less bright and less clearly-defined, although the 
     other albedo markings in its vicinity remained visible; this may 
     have been a consequence of the Moon’s diminishing altitude. 
     ALPO/BAA weight=1.