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


2026-Jul-05 UT 12:20-12:44 Ill=74% 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.


2026-Jul-05 UT 12:20-12:29 Ill=74% Plato observed by Mobberley_M on 1981-10-18

     On 1981 Oct 18 UT 22:14022:16 M.Mobberley (Bury St Edmunds, UK, 
     14" Cassegrain, seeing variable, transparency misty) found that 
     the central craterlet on the floor of Plato was not visible, 
     despite it being visible under similar colongitudes on other 
     nights. Might be due to observing conditions, but observer 
     suspicous. At 02:08 the observer comments that the central 
     craterlet was ellusive, and at 02:42, though it is uncertain 
     whether they regarded it as suspicous still at this stage? 
     ALPO/BAA weight=1.


2026-Jul-05 UT 12:33-12:45 Ill=74% Vallis_Schroteri observed by Pickering_WH on 1891-9-23

     On 1891 Sep 23 at UT 22:00 Pickering, based at Arequipa, Peru, and 
     using a 12" reflector, saw in Schroter's Valley and the vicinity 
     "Varitions in vapor column. Drawings. Time estimated from given 
     colongitude)." Cameron 1978 catalog ID=272 and weight=1. ALPO/BAA 
     weight=1.


2026-Jul-06 UT 11:48-12:02 Ill=64% 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.


2026-Jul-07 UT 11:36-12:19 Ill=54% Vallis_Schroteri observed by Pickering_WH on 1891-9-25

     On 1891 Sep 25 at UT 20:00 Pickering, based at Arequipa, Peru, and 
     using a 12" reflector, saw in Schroter's Valley and the vicinity 
     "Varitions in vapor column. Time estimated from given colongitude)." 
     Cameron 1978 catalog ID=273 and weight=1. ALPO/BAA weight=1.


2026-Jul-07 UT 11:36-12:32 Ill=54% Aristarchus observed by Moseley_T on 1968-7-18

     Aristarchus and Cobra Head 1968 Jul 18 UT 00:50-01:30 
     Observed by Moseley & Corvan (Armagh, N.Ireland, 10" 
     refractor, x255) and by Moore (Selsey, England, 3" refractor, 
     x 120) "Distinct red glow & obscur. 1st at 0050 S. of C.H. & 
     same size. At 0052h saw color on S.wall of Aris. Both 
     persisted till 0100h then both (faded, then brightened, then 
     faded. Plato, Gassendi & Kepler checked with neg. results. 
     Obscured areas reached greatest extent at 0125h wgen it was 
     1/2 size of C.H. & SSE (ast. ?) of it. Moore was alerted to 
     it & saw it in blink, but not vis. at 0107-0220". NASA 
     catalog weight=5. NASA catalog ID 1085. ALPO/BAA weight=4.


2026-Jul-07 UT 11:36-11:58 Ill=54% 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.


2026-Jul-09 UT 11:46-11:51 Ill=32% Limb observed by Dunn_S on 1762-6-16

     Closest parts of the Moon at Saturn appearing from
     occultation were dull and hazy. Was this an effect of
     the lunar atmosphere or a high haze and halo around the Moon?
     Cameron's 2006 catalog extension gives this an ID No. of 3
     and a weight of 1. The ALPO/BAA catalog weight is also 1.


2026-Jul-09 UT 12:03-12:51 Ill=31% 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"


2026-Jul-11 UT 12:47-12:55 Ill=12% 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.


2026-Jul-11 UT 12:47-12:55 Ill=12% S_Pole observed by Hill_H on 1984-7-25

     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.


2026-Jul-29 UT 09:17-11:25 Ill=100% Aristarchus observed by Arkhipov on 1982-8-4 *

     On 1982 Aug 04 at UT19:25 Arkhipov (Ukraine). found that for 3 minutes 
     Aristarchus brightened. Cameron 2006 catalog ID=180 and weight=0. 
     ALPO/BAA weight=1. 


2026-Jul-29 UT 09:17-11:25 Ill=100% Copernicus observed by Arkhipov on 1982-8-4 *

     On 1982 Aug 04 at UT19:25 Arkhipov (Ukraine). found that for 5 minutes 
     Copernicus flashes. Cameron 2006 catalog ID=180 and weight=0. ALPO/BAA 
     weight=1. 


2026-Jul-30 UT 08:13-09:25 Ill=99% Mare_Tranquillitatis observed by Culver on 1988-4-3 *

     On 1988 Apr 03 at UT02:25-02:30 Culver (Harker Heights, X, USA, Meade 
     2045 reflector, x40, seeing=turbulent) detected flashes coming from 
     just north of the centre of Mare Tranquilitatis. Some of these flashes 
     were of a duration of seconds whilst others were several minutes. 
     Altogether ~20 flashes were seen, and not in the same place. "5 small 
     star-like points could be located - and there were lots of craterlets". 
     The spots were "lined up E-W at N of 10 deg latitude." Colour was not 
     visible on these nor variations. Apparently the observer had seen this 
     type of TLP before but had not reported them. The Cameron 2006 catalog 
     ID=323 and weight=2. the ALPO/BAA weight=2.