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-Jul-02 UT 07:27-08:20 Ill=45% Earthshine observed by Harrison_H on 1877-6-17 *

     On 1877 Jun 17 at UT 21:00? Harrison (USA?) observed a light point on 
     the Earthlit side of the Moon. He also observed a luminous point that 
     could not be identified (Cameron speculates that this could be a 
     confirtmation of Denett's Bessel observation?). The Cameron 1978 
     catalog ID=195 and the weight=3. The ALPO/BAA weight=2.


2025-Jul-02 UT 07:58-08:20 Ill=45% Bessel observed by Dennett_F on 1877-6-17 *

     Bessel 1877 Jun 17 UT 22:30 Observed by Denett (England?, 2.75" 
     reflector) "Tho't he could detect a minute pt. of light shining out of 
     dark crater. (no high peaks in Bessel to catch light.)" NASA catalog 
     weight=3 (average). NASA catalog ID #194. ALPO/BAA weight=3.


2025-Jul-15 UT 11:56-13:03 Ill=77% Posidonius observed by Muller on 1890-10-3

     On 1890 Oct 03 at UT 22:00 Muller of Germany saw in Posidonius an 
     unusual shadow (Moon low? and crater in dark part-terminator 2 deg past 
     west wall - according to Cameron). Cameron 1978 catalog ID=267 and 
     weight=3. ALPO/BAA weight=2.


2025-Jul-15 UT 12:35-13:03 Ill=77% Copernicus observed by Firsoff on 1955-5-12

     Copernicus 1955 May 12 UTC 03:40 Observed by Firsoff (Somerset, UK, 
     6.5" reflector x70) "Pico was invis. in violet filter. Copernicus was 
     bright in it." NASA catalog weight=4 (high). NASA catalog ID #591.


2025-Jul-15 UT 12:35-13:03 Ill=77% Mons_Pico observed by Firsoff on 1955-5-12

     Mt Pico 1955 May 12 UTC 03:40 Observed by Firsoff (Somerset, UK, 
     6.5" reflector x70) "Pico was invis. in violet filter. Copernicus 
     was bright in it." NASA catalog weight=4. NASA catalog ID #591. 
     ALPO/BAA weight=3.


2025-Jul-15 UT 12:54-13:03 Ill=77% Agrippa observed by Bartlett on 1966-9-5

     Agrippa 1966 Sep 05 UTC 04:47-05:00 Observed by Bartlett (Baltimore, 
     MD, USA, 5" reflector, 283x) "Within the wall shadow, the landslip was 
     faintly illum., est. at 4, & distinctly brownish". S=6-1, T=3-1. NASA 
     catalog weight=4 (good). NASA catalog ID #975.


2025-Jul-16 UT 11:18-13:05 Ill=67% Alphonsus observed by Unknown_Observer on 1958-12-2

     On 1958 Dec 02 at UT 06:00 an unknown observer detected a TLP on the 
     Moon. The reference for this is from Palm, 1967 Icarus. The Cameron 
     1978 catalog ID=709 and weight=0. The ALPO/BAA weight=1.


2025-Jul-16 UT 12:17-13:05 Ill=67% Plato observed by Foley_PW on 1975-3-4

     On 1975 Mar 04 at UT03:46-06:01 P.W.Foley (Wilmington, Dartford, 
     Kent, UK, 12" reflector) observed bluesness along the southern 
     wall of Plato.  This is a BAA observation. The Cameron 1978 
     catalogue ID is #1403 and has a weight of 1. The ALPO/BAA 
     weight=1.


2025-Jul-16 UT 12:32-13:05 Ill=67% Aristarchus observed by Foley_PW on 1975-3-4

     On 1975 Mar 04 UT 04:01-05:30 P.W. Foley (Wilmington, Dartford, Kent, 
     UK, 12" reflector, seeing excellent, no turbulence, slight frost and 
     mist) had a suspicion of blue on the entire north wall of Aristarchus 
     crater - not seen visually but detected with a Moon Blink device. 
     Crater extremely bright and unable to penetrate it visually. 
     Surrounding areas charp. No red/orange on south wall. All other areas 
     proved negative. Photographs taken. No change in appearance over this 
     time. ALPO/BAA weight=2.


2025-Jul-16 UT 12:43-13:05 Ill=67% Cassini observed by McLarin on 1965-10-16

     1965 Oct 16 UTC 08:05-10:00 Observed by McLarin (Huntsville, AL, 20" 
     reflector), Bates, Hall (Prt. Tobacco, MD, 16" reflector), Hardie 
     (Nashville, TE, 30" reflector) "Color flashing pulsations 
     intermittently detected by Trident MB device in Huntsville but not seen 
     in Md, or vis. by Hardie when alerted. Pulsations in Cassini different 
     from atmosphere" NASA catalog weight=2 (low). NASA catalog ID #906.


2025-Jul-17 UT 11:09-12:43 Ill=56% Aristarchus observed by Crotts_A on 1979-12-11

     On 1979 Dec 11 at 05:05-05:28 UT A. Crotts (Princton, NJ, USA, CCD 
     camera and spectrophotometer) "Spectral Photometer recording - digital 
     pics. With spectral slit. CED eff 2%." Cameron 2006 catalog ID=77 and 
     weight=5. 


2025-Jul-17 UT 11:09-12:43 Ill=56% Mersenius observed by Crotts_A on 1979-12-11

     On 1979 Dec 11 at 05:05-05:28 UT A. Crotts (Princton, NJ, USA, CCD 
     camera and spectrophotometer) TLP detected in Mersenius : "Spectral 
     Photometer recording - digital pics. With spectral slit. CED eff 2%." 
     Cameron 2006 catalog ID=77 and weight=5. ALPO/BAA weight=4.


2025-Jul-17 UT 11:23-12:26 Ill=56% Alphonsus observed by Vasilev on 1930-9-15

     In 1930 Sep 15 at UT00:00 Vasilev (Russia) observed the following in 
     Alphonsus crater: "During SS there was a triangular spot nr. W. wall 
     until merging with shad. of wall (normal?) (date wrong as age is 3.2d & 
     should be @ 23d. 9/15/30 would be correct: aux. data for 15th". The 
     Cameron 1978 catalog ID=0. The Cameron 1978 catalog ID=398 and 
     weight=0. The ALPO/BAA weight=1.


2025-Jul-18 UT 11:11-11:35 Ill=45% Earthshine: sporadic meteors

2025-Jul-18 UT 11:59-13:09 Ill=45% Aristarchus observed by George on 1965-10-18

     Aristarchus 1965 Oct 18 UTC 07:30-07:36 Observed by George, Dervas 
     (Huntsville, Alabama, 20" reflector x125) "Color with intermittent 
     displays, detected with Trident MB device. Observers dubious. NASA 
     catalog weight=2 (low). NASA catalog ID #907.


2025-Jul-18 UT 12:24-13:09 Ill=44% Copernicus observed by Firsoff on 1955-5-15

     Copernicus 1955 May 15 UTC 03:30 Observed by Firsoff (Somerset, UK, 
     6.5" reflector x70) "Almost as bright in violet filter as Aristarchus" 
     NASA catalog weight=4. NASA catalog ID #592.


2025-Jul-19 UT 11:24-11:39 Ill=33% Earthshine: sporadic meteors

2025-Jul-19 UT 11:56-13:11 Ill=33% Aristarchus observed by Gilheany on 1965-8-21

     1965 Aug 21 UTC 06:55-08:05 Observed by Gilheany, Johnson, Segerstrom 
     (Port Tobacoo, MD, USA) described in the NASA catalog as: "Color patch 
     detected by Trident; MB device. Color was pink. Astronauts on Gemini 5 
     saw terrestrial auroras from space on this date". 16" reflector used. 
     NASA catalog weight=5 (very high). NASA catalog ID No.#890.


2025-Jul-19 UT 12:01-13:11 Ill=33% Aristarchus observed by Moseley_R on 1983-8-3

     Aristarchus 1983 Aug 03 UT 0305-0400 Observed by R,Moseley 
     (Coventry, UK, 6" reflector, seeing II, Transparency very good). 
     At the start of the observation, the NE wall and immediate 
     exterior was the brightest area visible (this is normal) and 
     seemed tinged with a faint blue/violet. At 03:45 the impression 
     of colour was fading in the brightening sky, but by 03:55 the 
     colour was back again with a faint violet/purple surrounding the 
     whole formation from E clockwise to N. The observer found it 
     difficult to decide whether it was really a colour on the Moon, 
     or an optical illusion. ALPO/BAA weight=1.