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


2019-Aug-03 UT 22:15-22:22 Ill=11% Gassendi observed by Graham_F on 1990-4-28 *

     On 1990 Apr 28 at UT 01:19-01:25 F. Graham (Marshall TWP, OH, USA, 6" 
     reflector) during a failed attempt to observe the occultation of X6493 
     that was thwarted by clouds, noticed that Gassendi was "Gass,>>,>Aris 
     or anything else". The crater had a "milky lustre". It is possible that 
     another occultation observing group may have a video of the Earthshine 
     at this time. Darling (Sun prairem WI, USA, 20x50 binoculars) could not 
     see Earthsine, though the sky was bright at the time. The Cameron 2006 
     catalog ID=402 and the weight=0. The ALPO/BAA weight=1. 


2019-Aug-16 UT 00:38-02:58 Ill=100% Plato observed by Mount_AW on 1944-9-3 *

     Plato 1944 Sep 03 UTC 03:40 - A.W. Mount (Fort Worth, TX, USA, 
     Conditions good, seeing 6/10) saw a small white bright point of 
     light appear suddenly close to the W. wall of Plato glowed 
     briefly as by far the most conspicuous object in the lunar field 
     of view and vanished quickly after approximately 2 sec. It was 
     star-like in appearance and was stationary on the Moon's surface 
     - about magnitude 6? Angular diameter of the flash was <= 1". 
     Observing conditions good enough to see the central craterlet in 
     Plato. 20cm reflector used. Ref. DJALPO Vol 45, p28 Spring 2003.


2019-Aug-16 UT 03:08-04:39 Ill=100% Kepler observed by Manchester_University on 1963-11-2 *

     On 1963 Nov 01 at UT 00:20-00:35 Kopal and Rackham (Pic du 
     Midi, France, 24" reflector) observed in Kepler an 
     enhancement in red light at 672.5nm and 545.0nm. Luminescence 
     ~86% +/-3% of background. The Cameron catalog says that Moore 
     saw something between 23:30 and 03:00, but it is not clear 
     what exactly, or whether it was Copernicus, Kepler, or 
     Aristarchus? The Cameron 1978 catalog ID=779 and weight=5. 
     The ALPO/BAA weight=5.


2019-Aug-16 UT 04:17-04:39 Ill=100% Unknown observed by Scarfe on 1963-11-2 *

     On 1963 Nov 02 at UT 00:00? Scarfe (Cambridge, UK) observed a spectral 
     line dpeth anomaly? The cameron 1978 catalog ID=780 and weight=5. The 
     ALPO/BAA weight=4.


2019-Aug-16 UT 04:26-04:39 Ill=100% Fracastorius observed by Robinson_JH on 1980-9-24 *

     On 1980 Sep 24 at UT21:34 J-J. Robinson (Teighmouth, Devon, UK, 10" 
     reflector, x200, seeing=III) found, using a Moon Blink device, that 
     Fracastorius blinked on the northern side in the red filter. Cameron 
     2006 catalog ID=110 and weight=5. ALPO/BAA weight=3.


2019-Aug-16 UT 04:31-04:39 Ill=100% Plato observed by Moore_P on 1980-9-24 *

     On 1980 Sep 24 at UT 21:13-23:50 P.Moore (Selsey, UK) at 22:45 saw loss 
     of detail in the north west wall, especially in red light, but also 
     slightly in blue light too. By 22:48 there was activity on the crater 
     floor i.e. the four bright spots were visible in white light but not in 
     red. In blue the central spot was seen and there were dark radial 
     streaks to the south wall and south east. At 22:50 there was a loss of 
     detail. Other craters were normal. At 23:08 the floor was dark in red, 
     but some details were visible in blue. the effect had finished by 
     23:35. At21:34 J-H Robinson found Plato to be normal and no blinks, 
     though floor clearer in red than in blue, however the floor detail had 
     gone by 21:57. Blair suspected a dusty patch in north of Plato, 
     especially in red light. at 21:57 and it started spreading at 21:13, 
     then east at 21:15 and then north. Though it faded at 21:25 but was 
     back again at 21:35, and Moon blink colour filters still gave a 
     reaction at 21:50 - the TLP remained strong until 23:50UT. The Cameron 
     2006 catalog ID=110 and weight=5. The ALPO/BAA weight=4.


2019-Aug-17 UT 23:24-02:39 Ill=94% Plato observed by Unknown_Observer on 1959-11-17 *

     On 1959 Nov 17 at Ut 22:00 an unnamed observer saw a light in Plato. 
     The Cameron 1978 catalog ID=725 and weight=1. The ALPO/BAA weight=1.


2019-Aug-18 UT 23:23-00:07 Ill=89% Atlas observed by Delmotte on 1954-3-23 *

     Atlas 1954 Mar 23 UTC 00:00? Observed by Delmotte (France?) "Violet 
     tint in crater" NASA catalog weight=3 (average). NASA catalog ID #562.


2019-Aug-19 UT 03:01-05:06 Ill=89% Plato observed by Lihou on 1886-11-14 *

     Plato 1886 Nov 14 UT UT 21:45 Observed by Lihou (France?) "Brilliant 
     band N-S, area marked G in NE was only slightly visible, poorly 
     defined. Drawing (there were rays on the floor)." NASA catalog weight=3 
     (average). NASA catalog ID #253.


2019-Aug-20 UT 02:47-03:09 Ill=82% Kepler observed by Classen on 1968-7-14

     On 1958 Jul 14 at UT 21:00 Classen (Pulsnitz Observatory, East Germany, 
     8" refractor) observed Kepler to be 0.5 magnitudes brighter than 
     Aristarchus, normally it is the other way around with Aristarchus being 
     0.3 brighter than Kepler. The Cameron 1978 catalog ID=1084 and weight=
     3. The ALPO/BAA weight=2.


2019-Aug-20 UT 04:18-05:41 Ill=82% 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.


2019-Aug-20 UT 05:17-05:41 Ill=81% 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.


2019-Aug-21 UT 02:49-04:14 Ill=74% Plato observed by Darling_D on 1989-4-26

     On 1989 Apr 26 at UT 10:22-10:44 D. Darling (Sun Praire, WI, USA, 3" 
     refractor, x36-x140) found that the eastern half of Plato crater was 
     dark - and he checked this using several eyepieces. moderate 
     magnification resolved the dark region into bands, but too high a 
     magnification (x140) made the bands dissappear. The Cameron 2006 
     catalog ID=362 and the weight=0. The ALPO/BAA weight=1. 


2019-Aug-21 UT 03:49-04:23 Ill=74% Aristarchus observed by Cameron_W on 1982-10-8

     On 1982 Oct 08 at UT 04:15-04:30 W. Cameron (Silverspring, MD, USA, 
     3.5" reflector, x160, Seeing-very good) suspected blue tinge on north 
     west rim and brown/red on south east rim of Aristarchus crater + focus 
     was slightly difficult. No similar colour effect seen on other craters. 
     Cameron 2006 catalog ID=186 and weight=1. ALPO/BAA weight=1.


2019-Aug-21 UT 03:49-04:23 Ill=74% Clavius observed by Cameron_W on 1982-10-8

     On 1982 Oct 08 at UT 04:15-04:30 W. Cameron (Silverspring, MD, USA, 
     3.5" reflector, x160) found that Clavius had a "D" shaped crater on its 
     outskirts that made it appear to have a ridge crossing through it. 
     Cameron 2006 catalog ID=186 and weight=1. ALPO/BAA weight=1.


2019-Aug-21 UT 23:33-23:36 Ill=66% Aristarchus observed by Bartlett on 1976-11-13 *

     Aristarchus 1976 Nov 13 UT 05:25 Observed by Bartlett (Baltimore, MD, 
     USA, 3" refractor, 54-200x, S=6, T=4) "Floor 8deg except S.=6deg which 
     is also granulated & la pale yellow. Different aspect fr. other obs. at 
     same col. Viol. in outer nimbus. Bright blue-viol. glare where viol. 
     radiance was on 11th. SWBS still large & 9 deg bright." NASA catalog 
     weight=4 (high). NASA catalog  ID #1457.


2019-Aug-22 UT 01:18-05:11 Ill=66% Plato observed by Mobberley_M on 1982-8-11 *

     On 1982 Aug 11 at UT03:30-04:15 Mobberley (Suffolk, UK) obtained a 
     photograph and made a sketch that revealed a needle-like shadow from 
     the west wall to near by the central craterlet - the latter was quite 
     clearly visible. What were not visible were the other four craterlets. 
     The Cameron 2006 catalog ID=183 and weight=4. The ALPO/BAA weight=2.


2019-Aug-22 UT 02:20-05:17 Ill=65% Alphonsus observed by Kozyrev on 1958-11-3 *

     Alphonsus 1958 Nov 03 UT 02:30-03:30 Observed by Kozyrev, 
     Ezerski (Pulkova Observatory, Crimea, Ukraine, 50" reflector, 
     23A/mm spectrograph) UT03:00-03:30 "C.p. redder than rest; 
     emiss. spect. in 4756A, 4100, 3950A (C3), 5165, 5130A (Swann 
     bands) 3 spect. over 3.5 h. Image of c.p. weakened in viol. 
     light on spect. Noted visual decrease in brightness & reddish 
     glow. Decrease in bright, & unnusual white color(at 0300h-
     0330h). Sudden decrease in vis. bright. Spect. started -- 
     gave norm. Spect. (0330-0340h), conditions almost identical to 
     Alter's on Oct. 26, 1956. Nothing seen on Nov. 2-3" NASA catalog 
     weight=5. NASA catalog ID #703. ALPO/BAA weight=5.


2019-Aug-22 UT 02:45-03:48 Ill=65% Tycho observed by Moseley_R on 1983-8-30

     Tycho 1983Aug30 UT 00:15-00:18 R. Moseley (Coventry, UK, 6" 
     f/10 reflector, x60, transparency very good, seeing III, 
     improving with altitude) attention initially caught by the 
     impression of a rosy colouration along the NW crest and outer 
     wall. For perhaps 2-3 min this persisted - before fading 
     entirely. The observer felt that the cause may have been 
     psysiological - or short-lived spurious colour. However 
     interestingly nearby craters did not show the effect. A 
     sketch was made over a longer time span 00:15-00:40UT. 
     ALPO/BAA weight=1.


2019-Aug-22 UT 04:24-05:47 Ill=64% 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. 


2019-Aug-22 UT 04:30-05:16 Ill=64% Lexell observed by Unknown_English_Observer on 1919-2-21

     In 1919 Feb 21 at UT 22:00? an unknown English observer observed in 
     Lexell crater an intensely dark line going out from it. The Cameron 
     1978 catalog ID=370 and weight=1. The ALPO/BAA weight=1.


2019-Aug-22 UT 05:12-05:47 Ill=64% 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.


2019-Aug-22 UT 23:43-00:16 Ill=56% Aristarchus observed by Bartlett on 1976-11-14 *

     Aristarchus 1976 Nov 14 UT 06:09 Observed by Bartlett (Baltimore, MD, 
     USA, 3" refractor, 54-200x, S=5-4, T=5) "Walls & floor 8deg except S.=
     6deg, SWBS now smaller but still 9deg. S.floor still granulated & now 
     yellow-brown. Strong viol. tint still on outer nimbus but now viol. 
     radiance (gas?) again on ENE rim as on 11th, but not as on 13th"
     NASA catalog weight=4 (high). NASA catalog  ID #1458.


2019-Aug-23 UT 02:24-03:42 Ill=55% Linne observed by Markov on 1918-4-4

     Linne 1918 Apr 04 UTC 01:00?  Observed by Markov (Russia) "In place of 
     crater only a hill 2km in diam. was vis. (seen in dark). " NASA catalog 
     weight=1, low, NASA catalof ID #368. ALPO/BAA weight=1.


2019-Aug-23 UT 04:11-05:32 Ill=55% Aristarchus observed by Brook_C on 2004-7-10

     "Observed early morning Moon, with 60mm OG x120, from 02-20 to  02-45 
     hrs UT targeting Plato, Aristarchus, and Alphonsus. From 02-20 to 02-30 
     hrs UT. Aristachus showed a faint pink colouration, where the light 
     material contacted the darker Mare surface. This was not seen after 02-
     30 hrs UT." Transparency very good, seeing somewhat unsteady at first, 
     improving later on. The ALPO/BAA weight=2.


2019-Aug-23 UT 04:46-05:50 Ill=54% 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.


2019-Aug-23 UT 05:25-05:50 Ill=54% 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.


2019-Aug-23 UT 05:36-05:50 Ill=54% 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.


2019-Aug-24 UT 02:23-02:41 Ill=45% Plato observed by Williams_AS on 1882-4-11

     On 1882 Apr 11 at UT 21:00 Williams (England, 6.5" reflector) observed 
     Plato at sunset (date Cameron gives is calculated from #229) and saw a 
     curious phosphorescent glimmer in the crater where he had seen a 
     luminous milky appearance before. at sunrise. The cameron 1978 catalog 
     ID=230 and weight=3. The ALPO/BAA weight=3.


2019-Aug-24 UT 02:23-02:47 Ill=45% Adams observed by Arkhipov on 1978-1-2

     On 1978 Jan 02 at UT23:00? A.V. Arkihpov and A.R. Kharkov (USSR) 
     observed in the terminator region (near Adams?) a flash enclosed by a 
     fuzzy envelope (180x120 arc seconds in size). The TLP faded away over 
     30 seconds. Cameron says that this is the first example of many 
     photographs that registered activity. The Cameron 2006 catalog ID= and 
     weight=5. The ALPO/BAA weight=2.


2019-Aug-24 UT 02:23-04:49 Ill=44% Earthshine: (radio) Gamma Leonids: ZHR=low

2019-Aug-25 UT 02:54-04:47 Ill=34% Grimaldi observed by Jorgensen on 1971-6-18

     Grimaldi 1971 Jun 18 UTC 02:12-02:31 Observed by Jorgensen 
     (Denmark, 36" refractor, 60, 200x, seeing good) "Dark reddish 
     spot in SW part of crater. At 60x. Became clearer at 200x & 
     seen in midwest also. At 0331h phenom. clearest in west, while 
     S. region had faded. Air turb. & dawn ended obs. at 0331h. 
     Seen best in yellow filter, well in red, invis. in green & 
     blue." NASA catalog weight=3. NASA catalog ID #1298. ALPO/BAA 
     weight=3.


2019-Aug-25 UT 02:54-04:11 Ill=34% Mons_La_Hire observed by Darling_D on 1989-6-28

     On 1989 Jun 28 at UT 08:39-09:00 D. Darling (Sun Praire, WI, USA, 
     3" refractor, x36) discovered that at this time Mons La Hire was the 
     brightest feature on the Moon. LaPrice was also very bright. Cameron 
     quotes that Darling recorded that LaHire had a brightness of 7.0 and 
     LaPlace=7.5. Darling did not think that this was a TLP. The Cameron 
     2006 catalog ID=369 and weight=0. The ALPO/BAA weight=1.


2019-Aug-25 UT 02:54-04:11 Ill=34% Promontorium_Laplace observed by Darling_D on 1989-6-28

     On 1989 Jun 28 at UT 08:39--9:00 D. Darling (Sunpraire, WI, USA, 3" 
     refractor, x36) noted that promontorium LaPlace was very bright. 
     LaHire brigtness was 7.0 and LaPlace was 7.5. Darling suspects 
     that this was not a TLP because "as did not have mother-of-perl 
     appearance as seen on Piton at times"The Cameron 1978 catalog ID=369 
     and the weight=0. The ALPO/BAA weight=1.


2019-Aug-25 UT 03:55-05:56 Ill=34% Limb observed by Dunn_S on 1762-6-16 *

     Closest parts of the Moon at Saturn appearing from
     occultation were dull and hazy. Was this an effect of
     the lunar atmosphere or a high haze and halo around the Moon?
     Cameron's 2006 catalog extension gives this an ID No. of 3
     and a weight of 1. The ALPO/BAA catalog weight is also 1.


2019-Aug-25 UT 02:54-04:52 Ill=34% Earthshine: (radio) Gamma Leonids: ZHR=low

2019-Aug-26 UT 03:37-03:52 Ill=24% S_Pole observed by Gruithuisen_F on 1839-7-7

     South Pole 1839 Jul 07 UT 02:00? Observed by Gruihuisen (Munich, 
     Germany) "Twilight" NASA catalog weight=3 (average). NASA catalog ID #
     118. ALPO/BAA weight=2.


2019-Aug-26 UT 03:37-04:07 Ill=24% Mare_Crisium observed by Arsyukhin on 1982-11-11

     On 1982 Nov 11 at UT 17:00-17:30 E.V. Arsyukhin (Moscow, Russia, 3" 
     reflector) saw three stationary dark spots suddenly appear in Mare 
     Crisium. There was one on the north and the other two in the south west 
     to south. They lasted approximately 30 minutes and then promptly 
     vanished. Cameron says that it cannot be this date because the Moon was 
     not visible at 17:00UT Suggests 05:00-05:30UT? The Cameron 2006 catalog 
     ID ID=189 and weight=3. The ALPO/BAA weight=2.  


2019-Aug-26 UT 03:37-04:56 Ill=23% Earthshine: sporadic meteors

2019-Aug-27 UT 04:36-00:00 Ill=15% Unknown observed by Amorati on 1978-1-6

     On 1978 Jan 06 at UT 01:00 Anorati (Firenze, Italy) observed inside a 
     "good sized crater?" an orange light that became bright green. The 
     efect did not recur over the many hours of observing. The observer did 
     not suspect that it was a meteor, but instead produced by an 
     intelligent being????? Cameron suggests a terrestrial meteor?
     The Cameron 1978 catalog ID=21 and weight=1. The ALPO/BAA weight=1.


2019-Aug-27 UT 04:36-05:51 Ill=15% Taruntius observed by Hobdell on 1981-11-23

     On 1981 Nov 23 at UT 10:31 B. Hobdell (St Petersberg, FL, USA, 3?" 
     refractor, seeing=1) observed 3 star-like very bright yellow flashes 
     (approximately 20 sec apart) on the east of Taruntius or on a ridge 
     near this. No additional flashes were seen. The Cameron 2006 catalog 
     ID=159 and weight=1. The ALPO/BAA weight=1.


2019-Aug-27 UT 04:36-04:59 Ill=14% Earthshine: sporadic meteors

2019-Aug-27 UT 05:15-06:02 Ill=14% Reiner observed by Darling_D on 1986-6-4

     Reiner 1986 Jun 04 UT 09:15-09:33 Observed by Darling (Sun Praire, WI, 
     USA, 12.5" Newtonian x79, x40, x35, Seeing 6, sky clear and steady - 
     Moon 9deg above horizon). David Darling was out on the morning of 4 
     June observing the planet Mars. While studying Mars the crescent Moon  
     rose giving me a splendid view of the earthshine portion of the disk. 
     As the Moon rose higher into the sky he decided to turn the telescope 
     onto it to the earthshine region of the Moon. He made it a practice 
     to examine this region of the Moon to monitor for craters that appear 
     to glow under this light. While observing he became aware of a black 
     spot located  in the sunlit portion of the Moon about 60 miles west of 
     the sunset terminator. At first he thought the black spot was a shadow 
     being cast by a large mountain or crater. When looking at his lunar 
     charts he could not locate any feature that would account for it. As he 
     continued to study the black spot he realized that it appeared darker 
     than any shadows on the Moon. It was at 4 June 1986 4:15 A.M. CDT or 
     9:15 U.T. when he first sighted the phenomena and it was at 4:25 A.M. 
     CDT or 9:25 U.T. that he realized he was seeing a lunar transient 
     phenomena event. It was at this time that he could start to see silvery 
     filaments or streaks in the black patch. Between 9:23 and 9:25 U.T. he 
     watched the black patch disappear. When the black spot had disappeared 
     he found that the location of the black spot was over the crater
     Reiner. he estimated that during the L.T.P. event that area covered by 
     the black cloud was approximately 40 to 50 square miles. He also had 
     examined other formations on the Moon during this event and none were 
     exhibiting the same phenomena witnessed over the crater Reiner.