TLP Repeat Illumination/Libration and Earthshine predictions for: Falkland_Islands - Port_Stanley



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


2020-Jan-01 UT 01:00-01:05 Ill=30% Earthshine: sporadic meteors

2020-Jan-02 UT 00:05-01:05 Ill=39% Ross_D observed by Arriola on 1967-10-10

     SE of Ross D 1967 Oct 10 UT 02:25-03:10 Observers: Harris 
     (Tucson, AZ?) Corralitos Obs (Organ Pass, NM, USA, 24" reflector) 
     "Bright area moved 80km/hr towards SSE & expanded as contrast 
     reduced. Corralitos MB did not confirm" NASA catalog weight=3 
     (average). NASA catalog ID #1049. Reports in ALPO/BAA archive 
     mention observations from Edmund Arriola & Robert Moody, Jr. 
     02:40-03:10 (19" Whittier College, x170 & x400, T=4, S=2-3) & 
     Cross 02:25-02:38 (12" f/66 Cass, x400, T=6, S=1.5 to 1") - the 
     latter although seeing low visual activity, apparently according 
     to Harris, took some yellow light photos that showed high 
     activity? ALPO/BAA weight=2.


2020-Jan-02 UT 00:05-01:13 Ill=39% Aristarchus observed by Price_M on 1981-2-10

     On 1981 Feb 10 at UT21:46-21:49 P. Madej (Huddersfield, UK) found a 2nd 
     mag star-like point on the north east wall of Aristarchus crater. M. 
     Price (Camberley, UK) at 21:46 and 21:49. North (UK) detected flashes 
     from the central peak. Foley saw Aristarchus as a "translucent glow". 
     Moore, Pedler and Ratcliff could not find Aristarchus. Earlier though 
     Amery (Reading, UK) had found Aristarchus to be sharply defined. 
     Cameron 2006 catalog ID=122 and weight=5. ALPO/BAA weight=3.


2020-Jan-02 UT 00:05-01:14 Ill=39% Julius_Caesar observed by Colesanti_C on 1993-6-25 *

     On 25 Jun 1993 at UT 23:30-23:52 Carlos Colesanti (Mairinque, 
     Brazil) obtained two CCD images of Julius Caesar crater and 
     noticed a brilliant fuzzy area on the rim of the crater. This 
     appeared in both images and resembled a fuzzy white blob. Note 
     that this is a REA-Brazil observation. ALPO/BAA weight=1. 
     Cameron (2006) ID=463.


2020-Jan-02 UT 01:00-01:22 Ill=39% Earthshine: sporadic meteors

2020-Jan-03 UT 00:05-00:59 Ill=48% Promontorium_Agassiz observed by Holden on 1888-7-16

     On 1888 Jul 16 at UT 05:35? Holden, at Lick observatory, CA, USA 
     saw a "Lunar Volcano, 1st magnitude star on the dark side. 
     Yellow light tinged with red from refractor's secondary spectrum 
     (facet glint? or peak catching sun before others? Hunt saw 
     similar phenomenon in 1863." Corliss states that it was later 
     revealed to be a mountain ridge near the southern termination of 
     the Alpes. Cameron 1978 catalog ID=357 and weight=1. ALPO/BAA 
     weight=1.


2020-Jan-03 UT 00:59-01:33 Ill=49% Earthshine: Quadrantids: ZHR=120 (vel=41km/s

2020-Jan-04 UT 00:05-01:11 Ill=58% Plato observed by Fauth on 1907-1-22

     Plato 1907 Jan 22 UT 20:00 Observed by Fauth (Germany?) "Glow of light 
     in part of crater" NASA catalog weight=3 (average). NASA catalog 
     ID 327.


2020-Jan-04 UT 00:05-00:45 Ill=58% Alphonsus observed by Cook_AC on 1990-2-3

     Alphonsus 1990 Feb 03 UT 18:00-18:23 Observed by A.C. Cook 
     (Frimley, UK, CCD video camera, seeing III-IV). At 18:06 W and 
     SE dark floor patches, equally dark, but at 18:10 and 18:23 the 
     W dark patch was the darker of the two?. Between 18:06 and 18:23 
     and a bright patch to the north of the central peak brightned 
     slightly wrt the its surroundings. However seeing conditions 
     worsened as the observing session progressed, and in view of 
     this the ALPO/BAA weight=1.


2020-Jan-04 UT 00:17-01:43 Ill=58% Tycho observed by Shaw_B on 2003-5-9

     Tycho 2003 May 09 UT 21:04 Observer Brendan Shaw (UK) "CCD 
     image of  central peak - Sun's altitude suggested that this 
     should not have been directly illuminated this early - may 
     have been from secandary reflectance off illuminated W wall?" 
     ALPO/BAA weight=1.


2020-Jan-04 UT 00:43-01:43 Ill=58% Alphonsus observed by Brook_C on 1990-2-3

     Alphonsus 1990 Feb 03 UTC 20:05-21:22 Observed by Brook (Plymouth, UK, 
     10" reflector)  "Brightness variance noted". The Cameron 2006 catalog 
     does not have an entry for this observation. The ALPO/BAA weight=2.


2020-Jan-04 UT 00:59-01:09 Ill=58% Earthshine: Quadrantids: ZHR=120 (vel=41km/s

2020-Jan-04 UT 01:20-01:43 Ill=58% Alphonsus observed by Smith_S on 1966-4-28

     Alphonsus 1966 Apr 28 UT 21:58 Observed by Smith (England, 10" 
     reflector) and Corralitos Observatory (Organ Pass, NM, USA, 24" 
     reflector+Moon Blink) "Reddish patches, (not confirmed at Corralitos 
     with MB tho they give feature as Gassendi in their report)." NASA 
     catalog weight=2. NASA catalog ID #930. ALPO/BAA weight=1.


2020-Jan-05 UT 00:12-01:42 Ill=67% Archimedes observed by Theiss on 1973-1-13

     Archimedes 1973 Jan 13 UTC 19:06-19:40 Observed by Theiss (51N, 9.67E, 
     75mm refractor) "Yellow to green colours at wall of Archimedes, became 
     stronger until 19:09UT, constant brightness until 19:10UT and 
     dissappeared at 19:16UT" Ref: Hilbrecht & Kuveler (1984) Moon & Planets 
     30, pp53-61.


2020-Jan-05 UT 00:36-01:48 Ill=67% Proclus observed by Krojer on 1973-1-13

     Proclus 1973 Jan 13 UTC 19:30-19:35 Observed by Krojer (48.25N, 11.5E, 
     60mm refractor) "North East wall of Proclus extraordinarilly bright, 
     observation interrupted by fog." Ref: Hilbrecht & Kuveler (1984) Moon & 
     Planets 30, pp53-61.


2020-Jan-05 UT 01:08-01:48 Ill=67% Censorinus observed by Leitzinger on 1973-1-13

     Censorinus 1973 Jan 13 UTC 20:02-20:14 Observed by Leitzinger (48.25N, 
     11.5E, 60mm refractor) "Censorinus Extraordinarily bright, pure white" 
     Ref: Hilbrecht & Kuveler (1984) Moon & Planets 30, pp53-61.


2020-Jan-06 UT 00:51-01:46 Ill=76% Gassendi observed by Sartory on 1966-4-30

     Gassendi 1966 Apr 30 UT 21:30-23:28 Observed by Sartory, 
     Ringsdore (England, 8.5" reflector, S=E), Moore, Moseley 
     (Armagh, Northern Ireland, 10" refractor, S=VG), Coralitos 
     Observatory (Organ Pass, NM, USA, 24" reflector, Moon Blink) 
     "English moon blink system detected red spots with vis. 
     confirm. Ringsdore says no color but saw obscuration. (LRL 
     60-in photos showed nothing unusual by my casual inspection). 
     Indep. confirm. (even E. wall was in dark). Corralitos did 
     not confirm by MB." N.B. event had finished by the time 
     Corralitos came on-line. NASA catalog weight=5. NASA catalog 
     ID #931. ALPO/BAA weight=4.


2020-Jan-06 UT 02:01-04:05 Ill=77% Sinus_Iridum observed by Brook_C on 1996-4-28 *

     Sinus Iridum 1996 Apr 28 UT 20:00 Observed by Brook (Plymouth, 
     UK, 60mm refractor, x112, seeing III, slight breeze, twilight) 
     "dark shaded area on floor ~1/4 diameter of Sinus Iridum on 
     western interior by rim" BAA Lunar Section Observation. 
     ALPO/BAA weight=1.


2020-Jan-07 UT 00:04-00:39 Ill=84% Gassendi observed by Sartory on 1966-5-1

     Gassendi 1966 May 01 UT 19:30-00:21 Observed by Sartory (UK, 
     8.5" reflector, x500, S=G), Moore, Moseley (Northern Ireland, 
     12.5" reflector x350, S=E) and by Corralitos Observatory 
     (Organ Pass, NM, USA, 24" reflector + moon blink) "Eng. 
     moonblink & obscuration, also vis. confirm (Moore & Moseley 
     alerted by Sartory. Corralitos MB did not confirm. - but they 
     may not have been observing at the ame time?)." NASA catalog 
     weight=5. NASA catalog ID #932. ALPO/BAA weight=4.


2020-Jan-07 UT 00:04-00:09 Ill=84% Proclus observed by Darling_D on 1987-10-4

     On 1987 Oct 04 at UT 02:20 D. Darling (sun Praire, WI, USA, 12.5" 
     reflector, x170, S=8, VG, T=5) obtained the brightest measurement he 
     had ever recorded on the northern rim of Proclus. Brightness 9 and 
     adjacent plain was of brightness 6.5. The Cameron 2006 catalog ID=308 
     and the weight=3. The ALPO/BAA weight=3. 


2020-Jan-07 UT 00:54-01:21 Ill=84% Plato observed by Graham_F on 1980-7-24

     On 1980 Jul 24 at UT02:00 F. Graham (East Pittsburgh, PA, USA, 6" 
     reflector) took some photos (albeit out of focus) that showed a bright 
     spot on the west rim. Cameron comments that this spot was sharp 
     compared to the rest of the photograph, so was probably a photographic 
     artifact. The effect was not seen in the finder scope. The Cameron 2006 
     catalog ID=103 and weight=2. The ALPO/BAA weight=1.


2020-Jan-07 UT 01:18-01:21 Ill=84% Aristarchus observed by Paterson on 1966-5-1

     Aristarchus 1966 May 01 UT 21:55-22:45 Observed by Paterson, 
     Brown, Sartory, Ringsdore (England, 12" reflector x252 for the 
     former and 8.5"? reflector for the latter) "Eng. moon blink 
     system detected red spots with vis. by all but Ringsdore. Brown 
     saw intense white spot NW of crater wall" NASA catalog weight=5. 
     NASA catalog ID 933. ALPO/BAA weight=4.


2020-Jan-07 UT 02:10-04:27 Ill=85% Aristarchus observed by Darling_D on 1989-9-12 *

     On 1989 Sep 12 at UT00:58-02:25 D. Darling (Sun Praire, WI, USA, 12.5" 
     reflector, x159, S=7/10) observed similar light conditions to 1989 Jul 
     15. At 02:00 he observed pink on the south west wall of Aristarchus 
     crater. At 01:24UT the Aristarchus ray was yellowish, however the 
     entire Moon had a grey-yellow tinge of colour. Chromatic aberation was 
     observed at 01:56UT. By comparison Gassendi was checked and had no 
     colour. At 02:10 the crater wall of Aristarchus was unusual and was 
     quite different in appearance to rims of other craters. The cameron 
     2006 catalog ID=375 and the weight=1. The ALPO/BAA weight=1. 


2020-Jan-08 UT 04:42-04:54 Ill=92% Aristarchus observed by Azeau on 1971-9-2 *

     Aristarchus-Herodotus 1971 Sep 02 UTC 20:00 Observed by Ayeau 
     (Paris, France, 12" reflector, x100) "Brownish-red or maroon 
     seen on Aris. W.wall ridge to Herod. on S.wall of Herodotus" 
     NASA catalog weight=2. NASA catalog ID #1311. 
     ALPO/BAA weight=2.


2020-Jan-14 UT 05:10-05:56 Ill=85% Proclus observed by Lucas_M on 1989-8-20

     On 1989 Aug 20 at UT13:55 M. Lucas (Melbourne, Australia, naked eye) 
     witnessed a "pin-point flash" in the middle of the lower right quadrant 
     of the Full Moon. Foley suspects that this was in the Proclus region? 
     The Cameron 2006 catalog ID=374 and the weight=2. The ALPO/BAA 
     weight=2.


2020-Jan-14 UT 07:20-08:01 Ill=84% Copernicus observed by De_Groof on 1989-1-26

     On 1989 Jan 26 at UT 03:45 De Groof (Belgium) noted a white few second 
     long flash from Copernicus crater. The Cameron 2006 catalog ID=347 and 
     weight=3. The ALPO/BAA weight=3.


2020-Jan-15 UT 05:11-05:34 Ill=76% Aristarchus observed by Louderback_D on 1991-7-31

     On 1991 Jul 31 at UT 07:50 D. Louderback (South Bend, WA, USA, 3" 
     refractor) observed that the south floor of Aristarchus was wellow - 
     "almost gold, spilled over S wall on ray toward Herodotus". Cameron 
     comments that Bartlett often reported a yellow floor but not a spill of 
     the colour over to the external ray. Cameron also comments that 
     Louderback's refractor would refract more in blue light than in yellow, 
     therefore she did not think that it was due to chromatic aberation. The 
     Cameron 2006 catalog ID=431 and the weight=3. The ALPO/BAA weight=2. 


2020-Jan-15 UT 05:11-05:34 Ill=76% Mons_Piton observed by Louderback_D on 1991-7-31

     On 1991 Jul 31 at UT 07:50 D. Louderback (South Bend, WA, USA, 3" 
     refractor) found that all of Mons Piton was "unusually dark". Points D, 
     C (E and S resp), usually brightest points, but this time were not 
     bright. "Whole mt was as dark as W wall usually is at this time. In 
     violet filter Piton disappeared completely, but was a little brighter 
     in red filter and points D & G showed. Color not seen by eye. No albedo 
     measured. Suggests red event." Cameron rules out chromatic aberation 
     from Louderback's refractor. The Cameron 2006 catalog ID=431 and the 
     weight=3. The ALPO/BAA weight=1.


2020-Jan-15 UT 07:37-08:02 Ill=75% Plato observed by Foley_PW on 1975-6-28

     Plato 1975 Jun 28/29 UT 23:00-01:20. Foley (Wilmington, UK, 12" 
     reflector, seeing, III, good clarity transparency). At 23:00, 
     00:30, and 01:15 blue was seen on the inner wall:floor southern 
     boundary, and red on the corresponding northern floor:wall 
     boundary. However by 01:20, blue was now on the S-NW floor:wall 
     boundary, and red on the NE-SE floor:wall boundary. Atmospheric 
     spectral dispersion existed in many regions, but did not change 
     like the colours in Plato. Similar appearance craters such as 
     Grimaldi, Schickard, and Riccioli, were checked for a similar 
     change in colour, but no change was noticed in these. ALPO/BAA 
     weight=1.


2020-Jan-16 UT 07:46-08:04 Ill=64% Plato observed by Foley_PW on 1975-6-29

     Plato 1975 Jun 29/30 UT 23:05-00:30. Foley (Wilmington, UK, 12" 
     reflector, seeing, III, good clarity transparency). At 23:05, 
     blue was seen on the inner wall:floor southern boundary, and red 
     on the corresponding northern floor:wall boundary. However by 
     00:30, blue was now on the W floor:wall boundary, and red on the 
     E floor:wall boundary. Atmospheric spectral dispersion existed 
     in many regions, but did not change like the colours in Plato. 
     Similar appearance craters such as Grimaldi, Schickard, and 
     Riccioli, were checked for a similar change in colour, but no 
     change was noticed in these. ALPO/BAA weight=1.


2020-Jan-17 UT 05:42-06:42 Ill=53% Plato observed by Moore_P on 1991-12-28

     On 1991 Dec 28 at UT 02:10 P. Moore (Selsey, UK) could see no detail on 
     the floor of Plato crater. This report needs to be read in context with 
     the comments by Cameron for A.C. Cook's observation of the floor of 
     Plato on 1992 Jan 18 - Cameron 2006 catalog ID=438.


2020-Jan-17 UT 08:05-08:06 Ill=52% Pitatus observed by Unknown_Observer on 1974-6-12

     On 1974 Jun 12 at UT0256 an unknown observer noted a dark blob on the 
     northern edge of the floor of Pitatus crater. 


2020-Jan-18 UT 05:55-07:19 Ill=41% Earthshine: sporadic meteors

2020-Jan-19 UT 06:20-07:21 Ill=31% Earthshine: sporadic meteors

2020-Jan-19 UT 07:47-08:09 Ill=31% Grimaldi observed by Beaumont_S on 1998-3-22

     Grimaldi 1998 Mar 22 UT05:15-06:00 S. Beaumont (Windermere, UK, 
     127mm rich field refractor, seeing III, transparency Good) 
     observed that the northern half of Grimaldi seemed much lighter 
     than the southern half. She comments that she has seen this 
     before in last quarter phases, but it was really quite marked 
     how lighter the northern half was on this occasion. The ALPO/BAA 
     weight=1.


2020-Jan-20 UT 06:52-07:23 Ill=21% Earthshine: sporadic meteors

2020-Jan-21 UT 07:52-08:12 Ill=13% Aristarchus observed by Schmidling on 1964-6-6

     On 1964 Jun 28 at UT 08:20-09:10 Schmidling, St Clair, and Platt 
     (Riverdale, New York, USA, 8" reflector, x256) observed in the 
     Aristarchus, Herodotus, Schroter's valley area: two red spot glows, 
     glimmer, looked like ruby gems. Cameron says that the date was 
     predicted by Greenacre and looked for. The Cameron 1978 catalog ID=817 
     and weight=5. The ALPO/BAA weight=4.  


2020-Jan-30 UT 23:40-23:51 Ill=31% Aristarchus observed by Cook_JD on 1981-3-11

     A faint white pinpoint flash seen and also in the same position
     a whitish glow around the crater. No futher flashes seen after the
     first one. From UT2117-2130 the glow was still visible but faded
     making it more difficult to locate. When Foley observed he found 
     Aristarchus not very visible in Earthshine, despite Plato, Grimaldi,
     and several other features being visible. Both observers used
     12" reflectors. Cameron's 2006 catalog Extension ID=124 and 
     weight=0. ALPO/BAA weight=3. 


2020-Jan-30 UT 23:40-23:44 Ill=31% Aristarchus observed by Miles_H on 1985-4-25

     On 1985 Apr 25 at UT 21:34-22:04 H. Miles (England) observed 
     Aristarchus within Earthshine. Foley (Kent, UK, 12" reflector) had 
     observed it one hour prior to Miles and found it to be both dull and 
     blue - with a bright patch west of the crater on Aristarchus Upsilon 
     Mountain. At 21:45UT 6 star-like flashes seen on the floor. They 
     occurred again a few minutes later and repeated at 22:04UT.By 21:45UT 
     the bright patch had gone though. Smith (England) had also apparently 
     seen the flashes and a further glow, albeit more north of the one seen 
     by Foley. Miles confirmed Smith's glow north of Aristarchus. 
     Peters did not see much, indeed found Aristarchus to be quite 
     faint (2130-2141). The Cameron 2006 catalog ID=264 and the 
     weight=3. The ALPO/BAA weight=2. 


2020-Jan-30 UT 23:40-23:51 Ill=31% Proclus observed by Cook_MC on 1985-4-25

     Almost certainly the following was spurious colour and not
     a TLP. Proclus was found to be brighter than Censorinus. 
     Red was seen on the northern inner floor and blue on the
     edge of the external north rim NNE-NW. The rim to the SW
     could not be seen. ALPO/BAA weight=1.


2020-Jan-30 UT 23:40-23:44 Ill=31% Torricelli_B observed by Cook_MC on 1985-4-25

     Curious lack of detail, but this may have been related to
     the seeing. Of greater interest though was a dark blue
     splodge where the crater should have been. Shadow seen through
     this splodge, but no crater rim seen.


2020-Jan-31 UT 23:38-23:58 Ill=40% W_Limb observed by Vince_AW on 1948-4-15

     In 1948 Apr 15 at UT 20:00? Vince (England, UK) observed a bright spot, 
     about magnitude 3, in Earthshine, about 30deg north of Grimaldi., on 
     the west limb (90W, 25N). The Cameron 1978 catalog ID=503 and the 
     weight=3. The ALPO/BAA weight=3.


2020-Jan-31 UT 23:38-23:41 Ill=40% Aristarchus observed by Butler_FC on 1981-3-12

     On 1981 Mar 12 at UT 19:25-20:30 Butler (of Brixton, UK, using a 
     10" reflector at 32-64x) noticed that Aristarchus was not 
     visible, although the Earthshine was very obvious. Foley (of 
     Kent, UK, and using  12" reflector) noticed that the crater was 
     only just visible but Plato could definitely be seen. Cameron's 
     2006 TLP extension catalog ID=125 and weight=0. ALPO/BAA 
     weight=2.


2020-Jan-31 UT 23:44-23:58 Ill=40% Mont_Blanc observed by Schroter on 1789-9-26

     On 1789 Sep 26 at UT 03:30 Schroter (Lillienthal, Germany) observed 
     close beneath Mons Blanc at the west foot, in the dark, a small 5th 
     magnitude, speck of light. Its round shadow was sometimes black, 
     sometimes grey. Cameron suspects that this is the same as her TLP 
     report No. 50. the Cameron 1978 catalog ID=62 and weight=4. The 
     ALPO/BAA weight=3.