TLP Repeat Illumination/Libration and Earthshine predictions for: Greenland - Nuuk



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


2024-Aug-19 UT 02:18-04:01 Ill=99% Aristarchus observed by LeCroy on 1976-2-14 *

     On 1976 Feb 14 at UT23:35-0053 LeCroy (Springfield, VA, USA, 4.5" 
     reflector, x75, S=6 and T=4.5). A blue haze was seen on the east side 
     of Aristarchus and red haze on the west side. At 00:00UT details were 
     more clear and at 00:24UT Aristarchus and Herodotus, were seperated. At 
     00:34UT colours were gone. At 00:35UT blue was on Aristarchus and the 
     area was bright, but was black in a red filter. At 00:53UT the features 
     were clear and the colour gone and the brightness had decreased to 9. 
     Cameron comments that the colour was not due to temp. inversion because 
     of being dark in the red filter, implying a medium). The Cameron 1978 
     catalog TLP ID is 1428 and the weight=1. This is an ALPO report. The 
     ALPO/BAA weight=1.


2024-Aug-19 UT 02:18-03:55 Ill=99% Copernicus observed by Robinson_JH on 1977-3-4 *

     On 1977 Mar 04 at UT 20:55-21:18 JH Robinson (Teighmouth, Devon, UK,
     26cm reflector, x200, Wratten 25 and 44a filters, seeing steady, 
     transparency varies from fair to very poor and cloud eventually halted 
     observations). Copernicus was very indistinct. All other features 
     examined were normal. This is a BAA Lunar Section observation. ALPO/BAA 
     weight=2.


2024-Aug-19 UT 02:18-03:55 Ill=99% Fracastorius observed by Robinson_JH on 1977-3-4 *

     On 1977 Mar 04 at UT 20:55-21:18 JH Robinson (Teighmouth, Devon, UK,
     26cm reflector, x200, Wratten 25 and 44a filters, seeing steady, 
     transparency varies from fair to very poor and cloud eventually halted 
     observations). The floor of Fracastorius is significantly brighter in a 
     red filter than in a blue filter. This is a BAA Lunar Section 
     observation. ALPO/BAA weight=1.


2024-Aug-19 UT 02:18-03:53 Ill=99% Moon observed by Kozyrev on 1977-1-4 *

     On 1977 Jan 04 at 16:25-17:30 Kozyrev (Pulkovo Observatory, Crimea, 
     Ukraine, Soview Union) "Observed unusual processes on moon. Activity in 
     progress at beginning of obs. Still vis. at 1710, gone at 1730h. 
     Latharn & colleagues found no seismic activity at that timeunder a 
     quick look". The Cameron 1978 catalog weight=4 and ID=1460. The 
     ALPO/BAA weight=2. 


2024-Aug-22 UT 03:47-05:44 Ill=92% Cleomedes observed by Beaumont_S on 1993-12-31

     On 1993 Dec 31 at UT 05:00-07:40 S. Beaumont (Cambridge, UK, 12" 
     reflector) "saw a patch of hazy light to NW (from c.p. alpha) at 0550 
     craters B & J shadow of alpha had not reached E wall yet, but at 0536 
     it did. Alpha > at 0550. Craters B & J to SE had faded, vanished at 
     0630. Hazy patch remained around peak, alpha low mainly to NE like a 
     comet's tail. Slightly reddish fringe to E wall. (shown in sketch)". 
     The above has been quoted in full from the Cmeron catalog because the 
     catalog desription is slightly ambiguous and any attempted summary 
     might make the description more unreliable. The cameron 2006 catalog 
     ID=470 and the weight=3. The ALPO/BAA weight=2.   


2024-Aug-22 UT 03:48-05:21 Ill=92% Janssen_K observed by Brook_C on 1992-2-21

     On 1992 Feb 21 at 03:00-03:55UT C. Brook (Plymouth, UK, 3" refractor 
     x116, seeing II) found that Janssen K was very bright. Cameron 2006 
     catalog extension ID=441 and weight=2. ALPO/BAA weight=1.


2024-Aug-23 UT 03:13-05:10 Ill=84% Grimaldi observed by Firsoff on 1937-4-29

     In 1937 Apr 29 at UT 09:30 Firsoff (Glastonbury, UK, 6" reflector and 
     filters) observed a slight greenish colour (Cameron says colour of 
     ground? no TLP?). The Cameron 1978 catalog ID=420 and Weight=4. The 
     ALPO/BAA weight=3.


2024-Aug-23 UT 03:23-05:04 Ill=84% Plato observed by Gray on 1877-7-29

     Plato 1877 Jul 29 UTC 02:00?-02:30 Observed by Gray (England?) "S. of 
     crater a bright streak that disappeared at 0230" NASA catalog weight=3 
     (average). NASA catalog ID #196.


2024-Aug-23 UT 05:22-07:08 Ill=84% Alphonsus observed by Wilkins_HP on 1958-11-29

     Alphonsus 1958 Nov 29 UTC 22:00? Observed by Wilkins (Kent, UK, 
     15" reflector) "Near site of Kozyrev's outbreak saw a circular 
     patch, black pit center, & red, round masses all around it." 
     NASA catalog weight=4. NASA catalog ID #708.ALPO/BAA weight=3.


2024-Aug-23 UT 07:44-07:52 Ill=83% Mouchez observed by Steed_W on 1980-9-28

     On 1980 Sep 28 at UT05:00-07:00 W. Steed (Ocean City, MD, USA, 3" 
     refractor, x45 and x220) detected a "tower-like" feature on the east 
     rim of Mouchez crater, and appeared about 2-3x higher than other 
     mountains nearby. The Cameron 2006 catalog ID=112 and the weight=1. The 
     ALPO/BAA weight=1.


2024-Aug-24 UT 02:37-04:34 Ill=75% Mons_Piton observed by Brook_C on 1999-1-7

     1999 Jan 07 UT 01:57 C. Brook (Plymouth UK, 65mm refractor, 
     x125, seeing good) found this mountain unusually dull. In 
     contrast, Mons Pico, Montes Teneriffe, Montes Spitzenberg, 
     were all normal. ALPO/BAA weight=1.


2024-Aug-24 UT 02:41-04:31 Ill=75% Theophilus observed by Cross on 1965-7-18

     Theophilus 1965 Jul 18 UTC 08:52-09:01 Observed by Cross, Ariola 
     (Whittler, CA, USA, 19" reflector, x450, S=4, T=3) "Red spots; 
     ruby red within a pink area on c.p." NASA catalog weight=5. NASA 
     catalog ID #885. ALPO/BAA weight=4.


2024-Aug-24 UT 04:33-05:55 Ill=74% Aristarchus observed by Bartlett on 1971-6-13

     Aristarchus 1971 Jun 13 UT 08:21 Observed by Bartlett (Baltimore, MD, 
     USA, 4" reflector x51, x93, x121) "S. part of floor was brownish & 
     granulated" NASA catalog weight=4 (high). NASA catalog ID #1296.


2024-Aug-24 UT 04:43-04:51 Ill=74% Plato observed by Gruithuisen_F on 1825-4-8

     Plato 1825 Apr 08 UT 01:00 Observed by Gruithuisen (Munich, 
     Germany) "West part of crater brighter than east part". NASA 
     catalog weight=4. NASA catalog ID #106. ALPO/BAA weight=1.


2024-Aug-24 UT 05:34-06:56 Ill=74% Gassendi observed by daSilva on 1971-6-13

     Gassendi 1971 Jun 13 UT 07:22-08:05 Observed by Raimundo Nonato 
     da Silva (Parnaiba, Brazil, 9.5" reflector, x180) "At 0755h 
     variation on W.(IAU?) edge of crater "brightness seemed to 
     become a little darker" as it was gugacious (foggy?), Was not 
     sure it was a LTP. Other features & it were normal from 0658-
     0755h". NASA catalog weight=1. NASA catalog ID 1295. ALPO/BAA 
     weight=1.


2024-Aug-24 UT 05:46-06:17 Ill=74% Aristarchus observed by Pedler_J on 1978-11-19

     Aristarchus 1978 Nov 19 UT 22:40-23:05 Observed by Pedler 
     (UK, 12.5" reflector, x200, seeing fair) Blue colour seen and 
     could not focus on this part, where as other craters were 
     nice and sharp in this filter. Aristarchus darker in red 
     light. all other craters were normal in red. Attempts to 
     change the eyepiece did not make any difference to the blue 
     colour. Cameron 2005 catalog ID=43 and weight=4.
     ALPO/BAA weight=3.


2024-Aug-25 UT 03:08-05:03 Ill=64% Rimae_Triesnecker observed by Markov on 1915-7-3

     Triensecker Rille 1915 Jul 03 UTC 00:00? Observed by Markov (Russia) 
     "Several spots changed their shapes compared with Gordeenko's depiction 
     on 5/23/12 see #339; which cannot be explained by light variations." 
     NASA catalog weight=3. NASA catalog ID #356.


2024-Aug-25 UT 05:12-06:16 Ill=63% Vallis_Schroteri observed by Pickering_WH on 1891-9-23

     On 1891 Sep 23 at UT 22:00 Pickering, based at Arequipa, Peru, and 
     using a 12" reflector, saw in Schroter's Valley and the vicinity 
     "Varitions in vapor column. Drawings. Time estimated from given 
     colongitude)." Cameron 1978 catalog ID=272 and weight=1. ALPO/BAA 
     weight=1.


2024-Aug-26 UT 02:48-04:26 Ill=53% Aristarchus observed by Sage_VA on 1978-10-23

     Aristarchus 1978 Oct 23 UT 06:30-06:34 V.A. Sage (Bristol, UK, 
     10.25" reflector, x250, Wratten 44a and 25, seeing II) noted 
     that Aristarchus was surrounded by a dark area in the blue 
     filter. They did not regard this as a TLP at the time. However 
     because Aristarchus is surrounded by blue material in real life, 
     this should have been brighter? For this reason, despite the 
     observer regarding this as a negative TLP, an ALPO/BAA weight=1 
     has been applied.


2024-Aug-26 UT 02:48-02:59 Ill=53% Archimedes observed by Darling_D on 1981-9-20

     On 1981 Sep 20 at UT 08:00-09:40 D. Darling (Sun Praire, WI, USA, 
     12.5" reflector, x342, seeing=excellent) detected the small crater on 
     its western rim But not on the eastern floor. This was odd because both 
     are equal in size, furthermore smaller craters could be seen and the 
     Moon was at a high altitude above the horizon, so seeing not a problem. 
     Cameron 2006 catalog ID=154 and weight=3. ALPO/BAA weight=1. 


2024-Aug-26 UT 02:48-06:58 Ill=51% Earthshine: sporadic meteors

2024-Aug-26 UT 07:55-08:01 Ill=51% Vallis_Schroteri observed by Unknown_Observer on 1994-4-3

     On 1995 Apr 03 at UT 03:30 Unknown Observer (Transparency good) saw a 
     darkening in the Cobra Head, Schroter's valley area of Aristarchus - 
     the best example that he had ever seen. The Cameron 2006 catalog ID=474 
     and the weight=3. The ALPO/BAA weight=. Reference - BAA Lunar Section 
     circular 1995 Oct, p125 and personal communication from David Darling 
     to the BAA on 6/6/1995. Note it is uncertain whether this refers to the 
     Clementine mission or to somebody who observed during the Clementine 
     mission, or somebody with that surname. Anyway if it is the Clementine 
     mission then the date is wrong - possibly the year should have been 
     1994? The Cameron catalogue does actually mention a TIFF on Clementine 
     mission? The Cameron 2006 catalog ID=474 and the weight=3. I am 
     assuming that the year should be 1994 and not 1995? The ALPO/BAA 
     catalog weight=1 until we can find out what the correct date is?


2024-Aug-27 UT 01:21-04:35 Ill=43% Plato observed by Arsyukhin on 1981-12-19 *

     On 1981 Dec 19 at UT 01:00-05:00 E.V. Arsyukhin (Moscow, Russia, 3" 
     reflector) observed that Plato was consdierably brighter than 
     Aristarchus by several times. The image quality was very clear. The 
     Cameron 2006 catalog ID=161 and weight=3. The ALPO/BAA weight=2.


2024-Aug-27 UT 01:55-05:24 Ill=42% Vallis_Schroteri observed by Pickering_WH on 1891-9-25 *

     On 1891 Sep 25 at UT 20:00 Pickering, based at Arequipa, Peru, and 
     using a 12" reflector, saw in Schroter's Valley and the vicinity 
     "Varitions in vapor column. Time estimated from given colongitude)." 
     Cameron 1978 catalog ID=273 and weight=1. ALPO/BAA weight=1.


2024-Aug-27 UT 03:18-04:34 Ill=42% Gassendi observed by Foley_PW on 1977-11-3

     On 1977 Nov 03 at 22:13UT P.W. Foley (Kent, UK, 11" reflector, x285)saw 
     some flickering in Gassendi (Clouds on limb - according to Csmeron?). 
     The Cameron 1978 catalog ID=18 and weight=1. The ALPO/BAA weight=1.


2024-Aug-27 UT 05:25-06:42 Ill=41% Rupes_Recta observed by daSilva on 1971-6-16

     On 1971 Jun 16 at UT 07:08-07:09 Raimundo Nonato da Silva 
     (Parnaiba, PI, Brazil, 9.5" reflector, x90, seeing=good) 
     observed during a lunar eclipse that the Straight Wall 
     surroundings were darker than an observation from two days 
     earlier. At 07:09UT tonality became clearer. As dawn was in 
     progress and atmospheric turbulence, not sure if it was a TLP? 
     Other features were normal. The Cameron 1978 catalog ID=1297 and 
     weight=1. The ALPO/BAA weight=1.


2024-Aug-27 UT 03:18-07:02 Ill=40% Earthshine: sporadic meteors

2024-Aug-28 UT 04:54-05:55 Ill=31% Copernicus observed by Saxton on 1979-9-15

     Copernicus 1979 Sep 15 UT04:40-05:25 J.Saxton (Leeds, UK, 
     8.5" reflector, x185, seeing I-IV, worsening towards local 
     sunrise) made a sketch and noted that the northern tip of the 
     internal shadow, by the floor, was not completely dark. The edge 
     of the floor here could be distingished, even though it was in 
     shadow. ALPO/BAA weight=1.


2024-Aug-28 UT 04:04-07:05 Ill=30% Earthshine: sporadic meteors

2024-Aug-29 UT 05:04-06:13 Ill=21% Aristarchus observed by Theiss on 1973-5-27

     Aristarchus 1973 May 27 UTC 01:09-01:56 Observed by Theiss (51N, 9.67E, 
     75mm reflector) "3 diameters of Aristarchus around its center: orange 
     bright area from 01:09-01:56" Ref: Hilbrecht & Kuveler, Moon & Planets 
     Vol 30 (1984) p53-61"


2024-Aug-29 UT 05:04-07:09 Ill=21% Earthshine: sporadic meteors

2024-Aug-29 UT 08:04-08:10 Ill=20% Moon observed by Darling_D on 1979-9-16

     On 1979 Sep 16 at UT 08:00-09:00 D. Darling (Sun Praire, WI, USA, 
     12.5" reflector, x62-x97, clear, but Moon at low altitude) detected 
     four new features that he had not seen before in Earthsine in 
     comparison with what he saw on 16 Jul 1979, this time in the southern 
     part of the Moon. pin-point flashes were seen within these bluish 
     areas. Each time a flash occurred the gas clouds brightened (sometimes 
     by 6x) for a few seconds. Cameron thinks that these are related to 
     moving clouds on the Earth's limb e.g. mackeral sky. Cameron 2006 
     catalog ID=69 and weight=1. ALPO/BAA weight=1.


2024-Aug-30 UT 06:51-08:13 Ill=13% Aristarchus observed by Gobel on 1824-1-27

     On 1824 Jan 27 at UT03:00 Gobel (Koburg, Germany) observed a reddish 
     colour in Aristarchus crater. The Cameron 1978 catalog ID=98 and the 
     weight=4. The ALPO/BAA weight=3.


2024-Aug-30 UT 07:02-08:13 Ill=13% Aristarchus observed by Hiscott on 1969-8-9

     Aristarchus 1969 Aug 09 UT 01:00? Observed by Hiscott 
     (Canterbury, 12" reflector) "Bright spots photog. on E. wall 
     (EWBB) (crater wall seen in ashen light at this time accord. 
     to LION obs.). Pearce, in BAA Circ. 5 (3) says LO 4, fr. 150 
     shows highlights in similar areas & in Cobra Head & are due 
     to slopes.) Spots were on all 8 negs." NASA catalog weight=5. 
     NASA catalog ID #1199. ALPO/BAA weight=3.


2024-Aug-30 UT 06:17-07:12 Ill=13% Earthshine: sporadic meteors

2024-Aug-31 UT 07:37-07:45 Ill=7% 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).