TLP Repeat Illumination/Libration and Earthshine predictions for: Norway - Oslo



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-Jun-21 UT 20:33-22:09 Ill=50% Theophilus observed by Ruchatz on 1972-5-19 *

     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.


2026-Jun-22 UT 20:33-21:55 Ill=60% Mons_Piton observed by Schneller on 1960-12-26 *

     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.


2026-Jun-25 UT 20:33-21:28 Ill=85% Plato observed by Crick on 1979-12-29 *

     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.


2026-Jun-25 UT 21:14-21:28 Ill=85% Gassendi observed by Cook_AC on 1979-12-29 *

     Gassendi 1979 Dec 29 UTC 20:09-22:04 - Observer: Cook (Frimley, Surrey, 
     UK) "Colour seen - almost certainly spurious colour and not a TLP".
     ALPO/BAA weight=1.