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-Jun-01 UT 07:09-08:05 Ill=32% Aristarchus observed by Celis on 1970-7-8

     On 1970 Jul 08 at UT 23:00-23:30 Celis (Paso Hondo, Chile, 3" 
     refractor, x60, x100, x135, seeing=excellent) observed the following at 
     Aristarchus: "Conditions again similar (to #1264). Brighter tonite(8 
     deg) than last nite. but not as bright as on the 6th. Pin pts. of light 
     very accentuated. The radial open hand extended fingers form not so 
     frequently, perhaps because of the larger crescent illum. now.". 
     The Cameron 1978 catalog ID=1266 and weight=3. The ALPO/BAA weight=2.


2025-Jun-01 UT 07:19-08:05 Ill=32% 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-Jun-02 UT 07:10-07:32 Ill=42% Mare_Imbrium observed by Unknown_Italian_Observers on 2012-3-28

     On 2012 Mar 28 at UT 20:45-20:50 Two unknown Italian 
     observers, reported on an on-line formum that they had 
     independently seen a distinct glow with a comma/drop shape. 
     One of them moved the Moon and the glow moved with the Moon. 
     It is uncertain how experienced the observers where. A chart 
     was provided which shows the lcoation of the glow in the 
     western side of Mare Imbrium. It is just possible that this 
     was Aristarchus in Earthshine, though that is very slightly 
     further west and south than the observers reported. ALPO/BAA 
     weight=1.


2025-Jun-02 UT 07:10-08:11 Ill=42% Menelaus observed by Grego_P on 2012-3-28

     On 2012 Mar 28 P. Grego (Cornwall, UK, seeing II, 100mm 
     refractor, x132) observed a patch of light just inside the NW 
     rim of Menelaus on the shadowed wall or floor. Computer 
     visulaiztions of the illumination conditions using a digital 
     elevation model failed to produce this effect. ALPO/BAA weight=3.


2025-Jun-03 UT 07:12-07:49 Ill=52% Pitiscus observed by Slayton_G on 1981-9-6

     Pitiscus 1981 Sep 05 UT ??:?? but assumed to be AM? which would make 
     it 00:00-03:00UTC. Observed by Slayton (Fort Lauderdale, Florida, USA, 
     8" reflector, ASA 64EK7 f/170, Kodak Kodachrome) photographed a bright 
     glow in the crater that appeared to move. Observer also reported seeing 
     it visually noting that it looked gray with a tinge of red. For further 
     information see p266 of Sky & Telescope (1991, March). Note that 
     Cameron gives the date and UT at 1981 Sep 06 UT 01:00-01:30, or one day 
     later. I will use this date and time from now on. The Cameron 2006 
     catalog ID=152 and weight=5. The ALPO/BAA weight=3.


2025-Jun-03 UT 07:12-08:08 Ill=52% Theophilus observed by Marshall_KP on 1982-9-24

     In 1982 Sep 24 at 22:45-23:40 K. Marshall (Medellin, Columbia) saw in 
     Theophilus an obscuration on the south west wall close to Cyrillus and 
     furthermore it had a red / mauve colouration (seen best in a 12mm Ortho 
     eyepiece). Through a Wratten 15 yellow filter the region was quite 
     bright. At23:40UT the obscuration faded. There was plenty of detail in 
     the region between Theophilus and Cyrils. The Cameron 2006 catalog ID=
     184 and the weight=3. The ALPO/BAA weight=3. 


2025-Jun-03 UT 07:17-08:08 Ill=52% Posidonius observed by Houdard on 1915-4-21

     On 1915 Apr 21 at UT 1800? Houdard (France) noticed a special 
     occurrence south of Posidonius which he took as evidence of water 
     vapor. The Cameron 1978 catalog ID=351 and weight=3. The ALPO/BAA 
     weight=2.


2025-Jun-04 UT 07:14-07:55 Ill=61% Alphonsus observed by Horowitz on 1967-8-13

     Alphonsus 1967 Aug 13 UT 18:40-18:55 Observed by Horowitz (Haifa, 
     Israel, 8" reflector?) "Glow or hazy patch seen while using filters. 
     Brighter than background. Not seen after 2055 or next nite" NASA 
     catalog weight=3 (average). NASA catalog ID #1041.


2025-Jun-04 UT 07:14-07:16 Ill=61% Purbach observed by Osawa on 1970-4-14

     Purbach 1970 Apr 14 UT 12:00-14:00 Observed by Osawa (Awajt-Shima, 
     Japan, 8" reflector, x288) "Photos in blue and orange taken. Ill-
     defined obscur. in blue photo in S. part of crater compared with 
     orange. (neg. is so faint it is doubtful. Apollo 13 watch. Similar to 
     Alter's findings in Alphonsus)." NASA catalog weight=2 (low). NASA 
     catalog ID #1250.


2025-Jun-04 UT 07:14-07:55 Ill=61% Moon observed by Mattingly on 1972-4-21

     On 1972 Apr 21 at UT19:01 Mattingly (Apollo 16 commander, in orbit 
     around the Moon, using his naked eyes) saw a bright flash from below 
     his horizon on the lunar farside (approximate longitude=180 deg). he 
     was dark adapted at the time. However no sesimic event was recorded and 
     so Cameron suspects that this was not a meteor impact but a cosmic ray 
     striking his eye. The Cameron 1978 catalog ID=1331 and weight=3. The 
     ALPO/BAA weight=3.


2025-Jun-04 UT 07:14-07:55 Ill=61% Alphonsus observed by Darling_D on 1990-5-3

     On 1990 May 03 at UT 02:03 D. Darling (Sun Praire, WI, USA, seeing 
     steady) observed a point of light inside Alphonsus just to the north 
     of the central peak, along the "center ridge". It was seen again, half 
     way between the central peak and the noth west rim - along the ridge. 
     All other features were normal. The Cameron 2006 catalog ID=403 and the 
     weight=3. The ALPO/BAA weight=3.


2025-Jun-04 UT 07:49-07:55 Ill=61% Swift observed by Wilkins_HP on 1934-3-23

     Peirce A (Swift=IAU name) 1937 Mar? 23? UTC 22:00 Observed by Wilkins 
     (England, UK, 12.5" reflector) "Obscuration on floor if crater. Crater 
     invis. (similar to #394, 396)." NASA catalog weight=4 (high). NASA 
     catalog ID #412. Note this is almost certainly supposed 
     to be 1934 Dec 23!


2025-Jun-05 UT 07:15-07:22 Ill=70% Linne observed by Knott_G on 1867-1-14

     Linne 1867 Jan 14 UT 20:00 Observed by Knott (England?) "White covering 
     had seemingly disappeared, was a dark spot. Definition (seeing?) was 
     poor." NASA catalog weight=1 very low. NASA catalog ID #148.


2025-Jun-05 UT 07:15-07:22 Ill=70% Kepler observed by Morales on 1884-2-5

     Morales of France?, observed "an illumination" in Kepler on 1884 Feb 05 
     at UT20:00?. The Cameron 1978 catalog ID is 241 and the weight=1. The 
     ALPO/BAA weight=1.


2025-Jun-05 UT 07:15-07:22 Ill=70% Censorinus observed by Hopp on 1972-4-22

     On 1972 Apr 22 at UT 18:58-00:28 Hopp (75mm refractor, 1200mm focal 
     length,transparency 4 out of 5 and seeing 4 out of 5, located at 52deg 
     30' N and 13deg 15'E) Censorinus brighter than normal relative to 
     Proclus. Published in Hilbrecht and Kuveler, Moon and Planets, 30 
     (1984) p53-61. ALPO/BAA weight=1.


2025-Jun-05 UT 07:15-07:22 Ill=70% W_Limb observed by Fitton on 1974-3-2

     On 1974 Mar 02 at UT 23:00 Fitton (Lancashire, UK, 8.5" reflector, 
     x200, seeing = excellent and transparency = excellent) observed "A fine 
     deep red line seen at 1st contact with B-ring of Saturn. Nothing 
     unusual at A-ring contact. Persisted during occult. of B-ring. It 
     divided into 2 components & space between B-ring & globe cutting ring 
     into 2 disjointed ends persisted till dark limb passed onto globe of 
     Saturn, then a short red line corresponding exactly to chord of planet 
     disk defined by lunar limb. It increased in length as occult. 
     progressed. It suddenly vanished after 3/4 of globe had been occulted. 
     No afterglow at spot on limb, no irreg. at limb could be seen. Obs. 
     eliminates Saturn, telescope, & atmosp. as possible cause. Suggests 
     refraction from tenuous atm. of destructive interference of reflected 
     light from very small angle at limb, or diffraction of Saturn light 
     grazing limb". The Cameron 1978 catalog ID=1389 and weight=1. The 
     ALPO/BAA weight=1.


2025-Jun-19 UT 10:53-11:32 Ill=43% Aristarchus observed by Brook_C on 2007-6-9 *

     Aristarchus appeared dimmer than normal.
     This report has an ALPO/BAA weight of 1.