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

2026-Jun-12 UT 02:39-03:20 Ill=13% Grimaldi observed by Firsoff on 1938-3-28 *

     Grimaldi 1938 Mar 28 UTC 09:30 Observer: Firsoff (Glastonbury, UK - 6" 
     reflector) - Slight greenish colour - {Note the UTC given in the NASA 
     catalog is 09:30 which is in daylight here in the UK - possibly the 
     catalog is wrong, else the observer was observing in daylight, but 
     worth checking out just in case}. NASA catalog ID No. #433 and NASA 
     weight=4 (good).


2026-Jun-22 UT 23:44-23:54 Ill=61% Ptolemaeus observed by Firsoff on 1954-5-10 *

     Flash seen in Ptolemaeus (A?) - possibly a meteor. Cameron 1978
     catalog weight=1. Cameron 1978 catalog ID=863.