TLP Repeat Illumination/Libration and Earthshine predictions for: USA AK Anchorage



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-Aug-08 UT 09:22-09:54 Ill=99% Copernicus observed by Robinson_JH on 1977-3-4 *

     On 1977 Mar 04 at UT 20:55-21:18 JH Robinson (Teighmouth, Devon, UK,
     26cm reflector, x200, Wratten 25 and 44a filters, seeing steady, 
     transparency varies from fair to very poor and cloud eventually halted 
     observations). Copernicus was very indistinct. All other features 
     examined were normal. This is a BAA Lunar Section observation. ALPO/BAA 
     weight=2.


2025-Aug-08 UT 09:22-09:54 Ill=99% Fracastorius observed by Robinson_JH on 1977-3-4 *

     On 1977 Mar 04 at UT 20:55-21:18 JH Robinson (Teighmouth, Devon, UK,
     26cm reflector, x200, Wratten 25 and 44a filters, seeing steady, 
     transparency varies from fair to very poor and cloud eventually halted 
     observations). The floor of Fracastorius is significantly brighter in a 
     red filter than in a blue filter. This is a BAA Lunar Section 
     observation. ALPO/BAA weight=1.


2025-Aug-09 UT 12:40-12:48 Ill=100% Plato observed by Chernov on 1921-11-15 *

     Plato 1921 Nov 15? UT 20:00? Observed by Chernov (Russia, 2" refractor 
     x94) "Temporary increase in brightness of the light band at bottom 
     noted close to FM. Crater actively noted in Oct. 10." NASA catalog 
     weight=1 (very low). NASA catalog ID #384.


2025-Aug-11 UT 13:10-13:36 Ill=94% Cleomedes observed by Beaumont_S on 1993-12-31

     On 1993 Dec 31 at UT 05:00-07:40 S. Beaumont (Cambridge, UK, 12" 
     reflector) "saw a patch of hazy light to NW (from c.p. alpha) at 0550 
     craters B & J shadow of alpha had not reached E wall yet, but at 0536 
     it did. Alpha > at 0550. Craters B & J to SE had faded, vanished at 
     0630. Hazy patch remained around peak, alpha low mainly to NE like a 
     comet's tail. Slightly reddish fringe to E wall. (shown in sketch)". 
     The above has been quoted in full from the Cmeron catalog because the 
     catalog desription is slightly ambiguous and any attempted summary 
     might make the description more unreliable. The cameron 2006 catalog 
     ID=470 and the weight=3. The ALPO/BAA weight=2.   


2025-Aug-11 UT 13:22-13:36 Ill=94% Messier_A observed by Moore_P on 1951-8-20

     Messier A 1951 Aug 20 UT 01:48-03:00 Observed by P.Moore 
     (England, 8.5" reflector, x350). Bright cloud like circular 
     patch seen on S wall of Messier A. It was the brightest object 
     in the vicinity. Observations ceased due to the Moon setting 
     behind a tree. W.Haas thinks that this effect is not unusual at 
     similar colongitudes. Moore checked again under similar 
     illumination and still considers the Aug 20 appearance abnormal. 
     NASA weight=4. NASA catalog ID #545. ALPO/BAA weight=2.


2025-Aug-12 UT 11:34-14:09 Ill=88% Plato observed by Gray on 1877-7-29 *

     Plato 1877 Jul 29 UTC 02:00?-02:30 Observed by Gray (England?) "S. of 
     crater a bright streak that disappeared at 0230" NASA catalog weight=3 
     (average). NASA catalog ID #196.


2025-Aug-12 UT 12:36-14:09 Ill=88% Grimaldi observed by Firsoff on 1937-4-29

     In 1937 Apr 29 at UT 09:30 Firsoff (Glastonbury, UK, 6" reflector and 
     filters) observed a slight greenish colour (Cameron says colour of 
     ground? no TLP?). The Cameron 1978 catalog ID=420 and Weight=4. The 
     ALPO/BAA weight=3.


2025-Aug-13 UT 12:00-13:47 Ill=80% Mons_Piton observed by Brook_C on 1999-1-7

     1999 Jan 07 UT 01:57 C. Brook (Plymouth UK, 65mm refractor, 
     x125, seeing good) found this mountain unusually dull. In 
     contrast, Mons Pico, Montes Teneriffe, Montes Spitzenberg, 
     were all normal. ALPO/BAA weight=1.


2025-Aug-13 UT 12:13-13:35 Ill=80% Theophilus observed by Cross on 1965-7-18

     Theophilus 1965 Jul 18 UTC 08:52-09:01 Observed by Cross, Ariola 
     (Whittler, CA, USA, 19" reflector, x450, S=4, T=3) "Red spots; 
     ruby red within a pink area on c.p." NASA catalog weight=5. NASA 
     catalog ID #885. ALPO/BAA weight=4.


2025-Aug-14 UT 09:20-09:52 Ill=71% Proclus observed by Louderback_D on 1980-8-31

     On 1980 Aug 31 at UT 08:00? D. Louderback (South bend, WA, 
     USA, 8" refletor x140) found the north wall to be very bright 
     in red light (this is not normal as it is usually bright in 
     blue - according to Cameron). The brightness was 9.7 (red) and 
     9 (blue no filter)compared to Eimmart's 8.7. Louderback 
     thought that they observed an orange-yellow tinge. Cameron 
     2006 catalog ID=108 and weight=3. ALPO/BAA weoght=2.


2025-Aug-14 UT 12:34-14:12 Ill=69% Rimae_Triesnecker observed by Markov on 1915-7-3

     Triensecker Rille 1915 Jul 03 UTC 00:00? Observed by Markov (Russia) 
     "Several spots changed their shapes compared with Gordeenko's depiction 
     on 5/23/12 see #339; which cannot be explained by light variations." 
     NASA catalog weight=3. NASA catalog ID #356.


2025-Aug-15 UT 09:30-11:14 Ill=59% Alphonsus observed by Kozyrev on 1958-11-3

     Alphonsus 1958 Nov 03 UT 02:30-03:30 Observed by Kozyrev, 
     Ezerski (Pulkova Observatory, Crimea, Ukraine, 50" reflector, 
     23A/mm spectrograph) UT03:00-03:30 "C.p. redder than rest; 
     emiss. spect. in 4756A, 4100, 3950A (C3), 5165, 5130A (Swann 
     bands) 3 spect. over 3.5 h. Image of c.p. weakened in viol. 
     light on spect. Noted visual decrease in brightness & reddish 
     glow. Decrease in bright, & unnusual white color(at 0300h-
     0330h). Sudden decrease in vis. bright. Spect. started -- 
     gave norm. Spect. (0330-0340h), conditions almost identical to 
     Alter's on Oct. 26, 1956. Nothing seen on Nov. 2-3" NASA catalog 
     weight=5. NASA catalog ID #703. ALPO/BAA weight=5.


2025-Aug-15 UT 09:30-09:33 Ill=59% Aristarchus observed by Hall on 1965-11-15

     Aristarchus 1965 Nov 15 UTC 05:55-10:00 Observed by Hall, Johnson, 
     Nordling (Pt. Tobacco, MD, USA, 16" reflector x400), Genatt (Greenbelt, 
     MD, USA, 6" refractor, x50 & 20" reflector x400), Wagmann (Pittsburgh, 
     PA, 30" refractor). "Color on c.p. detected with Trident MB, not seen 
     vis. at Port Tobacco. Network alerted & 6 responded. 4 did not see 
     anything unusual; 2 others did & saw red on c.p. in 6-in refr.. but not 
     in 20-in refl. at 400x; other saw indistinctness. Port Tobacco obs. 
     took 5 rolls of film in blue & red & neutral. Phenom. not detectable on 
     them, but focus was poor. Blue image had most detail, whereas would 
     expect red or neutral to. Phenom. still present at dawn in Moon Blink 
     device." NASA catalog weight=5. NASA catalog ID #914.
     ALPO/BAA weight=4.


2025-Aug-15 UT 09:30-10:43 Ill=59% Plato observed by Mobberley_M on 1982-8-11

     On 1982 Aug 11 at UT03:30-04:15 Mobberley (Suffolk, UK) obtained a 
     photograph and made a sketch that revealed a needle-like shadow from 
     the west wall to near by the central craterlet - the latter was quite 
     clearly visible. What were not visible were the other four craterlets. 
     The Cameron 2006 catalog ID=183 and weight=4. The ALPO/BAA weight=2.


2025-Aug-15 UT 11:52-13:37 Ill=58% Aristarchus observed by Sage_VA on 1978-10-23

     Aristarchus 1978 Oct 23 UT 06:30-06:34 V.A. Sage (Bristol, UK, 
     10.25" reflector, x250, Wratten 44a and 25, seeing II) noted 
     that Aristarchus was surrounded by a dark area in the blue 
     filter. They did not regard this as a TLP at the time. However 
     because Aristarchus is surrounded by blue material in real life, 
     this should have been brighter? For this reason, despite the 
     observer regarding this as a negative TLP, an ALPO/BAA weight=1 
     has been applied.


2025-Aug-16 UT 10:58-12:54 Ill=47% Plato observed by Arsyukhin on 1981-12-19

     On 1981 Dec 19 at UT 01:00-05:00 E.V. Arsyukhin (Moscow, Russia, 3" 
     reflector) observed that Plato was consdierably brighter than 
     Aristarchus by several times. The image quality was very clear. The 
     Cameron 2006 catalog ID=161 and weight=3. The ALPO/BAA weight=2.


2025-Aug-16 UT 11:57-13:52 Ill=47% Gassendi observed by Foley_PW on 1977-11-3

     On 1977 Nov 03 at 22:13UT P.W. Foley (Kent, UK, 11" reflector, x285)saw 
     some flickering in Gassendi (Clouds on limb - according to Csmeron?). 
     The Cameron 1978 catalog ID=18 and weight=1. The ALPO/BAA weight=1.


2025-Aug-16 UT 09:51-13:20 Ill=46% Earthshine: Kappa Cygnids: ZHR=5 vel=21km/s

2025-Aug-17 UT 11:03-12:45 Ill=36% Copernicus observed by Madej_P on 1979-9-15

     On 1979 Sep 15 at UT01:53 P.Madej (Newsome, Huddersfield, UK, 
     158mm reflector, x72 and x110, seeing II, transparency fair?) 
     saw a small circular area of grey or white in the dark south end 
     of Copernicus.The area showed up better through a Wratten 15 
     yellow filter, but was not seen at all through a purple Wratten 
     35 filter. P.W. Foley (Kent, UK), confirmed this but thinks that 
     it is normal. Cameron 2006 catalog ID=68 and weight=1. ALPO/BAA 
     weight=1.


2025-Aug-17 UT 10:26-13:23 Ill=35% Earthshine: sporadic meteors

2025-Aug-17 UT 13:49-14:22 Ill=35% Copernicus observed by Saxton on 1979-9-15

     Copernicus 1979 Sep 15 UT04:40-05:25 J.Saxton (Leeds, UK, 
     8.5" reflector, x185, seeing I-IV, worsening towards local 
     sunrise) made a sketch and noted that the northern tip of the 
     internal shadow, by the floor, was not completely dark. The edge 
     of the floor here could be distingished, even though it was in 
     shadow. ALPO/BAA weight=1.


2025-Aug-18 UT 11:17-13:26 Ill=24% Earthshine: sporadic meteors

2025-Aug-18 UT 13:40-14:24 Ill=24% Aristarchus observed by Theiss on 1973-5-27

     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"


2025-Aug-19 UT 09:40-10:12 Ill=17% Aristarchus observed by Jacobs on 1963-11-11 *

     On 1963 Nov 11 at 23:30UT Jacobs (Flagstaff, AZ, USA, 24" refractor, 
     seeing=very good) observed a reddish-orange colour in Aristarchus 
     crater and a sparkle in some areas. The Cameron 1978 catalog weight=3. 
     The ALPO/BAA weight=3


2025-Aug-19 UT 12:24-13:29 Ill=15% Earthshine: sporadic meteors

2025-Aug-20 UT 13:43-14:29 Ill=8% Littrow observed by Scholes on 1919-12-19

     In 1919 Dec 19 at UT 04:00 Scholes (Huddersfield, England? USA) 
     observed near Littrow a conspicuous ink-black mark (North of Cape 
     Argaeus or S of  Kittrow, The Cameron 1978 catalog ID=374 and the 
     weight=1. The ALPO/BAA weight=1.