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


2018-May-01 UT 00:00-03:45 Ill=99% Aristarchus observed by Moore_P on 1977-7-1 *

     P Moore, Selsey, Sussex, UK, used a 5" x250 scope and between
     23:50UT on Jul 1st 1977 and 00:10UT on Jul 2nd 1977 observed
     Aristarchus. The south wall of the crater was reddish, extending 
     down to the outer south east wall (IAU). However seeing was no 
     better than III-IV and he was 99% sure that the colour was 
     spurious. His report was submitted only in case any other 
     observers reported something similar. ALPO/BAA weight=1.


2018-May-19 UT 22:38-23:12 Ill=26% Lyell observed by Bartlett on 1972-11-10

     Lyell 1972 Nov 10 UTC 23:43 Observed by Bartlett (Baltimore, MD, USA, 
     3" refractor x54, x100, x200S=3, T=5) "At apparent center of floor & 
     edge of morning shadow an elongated, N-S irreg. obj. dull whitish-gray, 
     albedo=4 like a c.p. (photo in Kwasan atlas in 1963 taken at col. 339.3 
     deg has a faint suggestion of a bright spot in that place- (plate 20) 
     LO IV66 h2 & 73 H2, sun elev. @ 20deg show an even, dark floor with a 
     very small crater right in center -- unresolvable at earth. Kwasan 
     photo's spot could be an artifact" NASA catalog weight=3 (average). 
     NASA catalog ID #1349.


2018-May-19 UT 22:38-23:12 Ill=26% Eimmart observed by Louderback_D on 1983-3-19

     On 1983 Mar 19 at UT04:56-05:54 Louderback (South Bend, WA, USA, 
     3.1" refractor, seeing=1-2 and transparency=4) observed that at 05:15UT 
     Eimmart appeared fainter than the observing session began at 04:56 UT. 
     There was also a bright flash on the north wall that "fluctuated at 
     rate of 9s" Cameron comments that atmospheric blow ups were 11-12s. 
     Louderback found that the TLP was seen in the blue filter but not in 
     the red. The Cameron 2006 catalog ID=207 and the weight=4. The ALPO/BAA 
     weight=3.


2018-May-20 UT 23:09-23:50 Ill=37% Busching observed by Numi_MAL on 1991-10-14

     On 1991 Oct 14 at 04:12 UT M.A.L. Numi (Jeddah, Saudi Arabia) observed 
     that the crater Busching (20E,40S) underwent a sudden change. The 2006 
     Cameron catalog ID was 435 and weight=1. The ALPO/BAA weight=1,


2018-May-21 UT 00:22-02:14 Ill=37% Plato observed by Webb_TW on 1872-3-15 *

     Plato 1872 Mar 15 UT 20:00? Observed by Webb? (England?, 9" 
     reflector?) "Internal twilight in crater, same remarks as in #
     173 -- could 8. be misprint in #173? Schmidt 2X saw cavity of 
     Boussingalt feebly illum. at sunrise as tho filled with 
     mist."NASA catalog weight=3. NASA catalog ID #177.ALPO/BAA 
     weight=1.


2018-May-21 UT 22:44-23:31 Ill=48% Aristarchus observed by Schroter on 1789-9-26

     On 1789 Sep 26 at UT04:25? Schroter (Lillienthal, Germany) 
     noted a bright point 26" north of Aristarchus crater. Note 
     that the year might have been 1788? The Cameron 1978 catalog 
     ID=50 and the weight=3. The ALPO/BAA weight=3.


2018-May-21 UT 22:44-23:41 Ill=48% Mare_Crisium observed by Schroter on 1789-9-26

     Schroter, from Lillenthal in Gemany, in 1789 (possibly it was 1788) Sep 
     26 UT 04:30 saw a small nebulous bright spot on the northern edge of 
     Mare Crisium. Cameron 1978 catalog ID=50 and weight=3. ALPO/BAA 
     weight=2.


2018-May-21 UT 22:44-22:46 Ill=48% 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.


2018-May-21 UT 22:44-23:31 Ill=48% Plato observed by Schroter on 1789-9-26

     On 1789 Sep 29 at UT04:25? Schroter (Lillienthal, Germany) noted 
     1'18.5" south east of plato was a whitish bright spot shining somewhat 
     hazily, 4-5"in diameter and at 5th magnitude. He never saw this again. 
     The spot became conspicuous at times and then disappeared. There was 
     nothing else similar in Earthshine. Note that the year might have been 
     1788? The Cameron 1978 catalog ID=50 and the weight=3. The ALPO/BAA 
     weight=3.


2018-May-22 UT 00:15-00:00 Ill=48% Menelaus observed by Bartlett on 1976-9-1

     Menelaus 1976 Sep 01 UT 00:40 Observed by Bartlett (Baltimore, MD, USA, 
     4.5" reflector, 45-300x) "Upper 1/2 of W.wall bright white (8deg). 
     Lower 1/2 much duller at 4 deg & distinctly bluish-gray. Same as seen 
     in Aris. & Grimaldi & thinks it is due local agency (gas?)." NASA 
     catalog weight=4 (high). NASA catalog ID #1447.


2018-May-22 UT 22:47-23:42 Ill=59% Archimedes observed by no on 1967-1-18

     Archimedes 1967 Jan 18/19 UT 23:00?-01:00? Observed by Delano (New 
     Bedford?. Massachussetts, USA, 12.5" ? reflector) and by Corralitos 
     Observatory (Organ Pass, NM, USA, 24" reflector + Moonblink) "Saw an 
     obscuration or unusual appearance on floor. Not confirmed by Corralitos 
     MB., but their rep't says Aristarchus)" NASA catalog weight=4 (high). 
     NASA catalog ID #1009. ALPO/BAA weight=1.


2018-May-22 UT 23:34-00:29 Ill=59% Plato observed by Carle on 1952-11-25

     In 1952 Nov 25 at UT 01:00? Carle (USa, 8" reflector, x700, seeing = 
     poor) observed the following in Plato: "Sketch shows 8 spots -- 5 
     craters showed interior shad., 1 completely filled, but no others seen 
     despite several hrs. of study. Spots that should have been seen were 
     missing. poor seeing converts floor into shimmering shapeless blob. Has 
     observed it under good seeing & seen nothing on fl. as others have 
     noted". The Cameron 1978 catalog ID=555 and weight=3. The ALPO/BAA 
     weight=2. 


2018-May-23 UT 00:26-00:29 Ill=60% Archimedes observed by Hill_EG on 1966-3-29

     Archimedes 1966 Mar 29 UT 21:00 Observed by Hill (England, 24" 
     reflector, x250, S=E) "Brightening of E-W bands across floor. 
     (Obscuration accord. to Moore)" NASA catalog ID #923. NASA 
     catalog weight=3. ALPO/BAA weight=2.


2018-May-23 UT 22:50-00:29 Ill=70% Censorinus observed by Cook_MC on 1981-5-12 *

     On 1981 May 12 UT 22:45-2325 M.C. Cook (Frimley, UK and using 
     a 12" reflector), noticed that Censorinus was very bright, 
     fuzzy and occasionally brighter than Proclus. However both 
     Foley (Kent, UK) and Amery (Reading, UK) using a C.E.D. found 
     that Proclus was brighter than Censorinus as it had been 
     during April and May 1981. However Chapman obtained the 
     reverse of this. Cameron 2006 extension catalog ID=138 and 
     weught=3. ALPO/BAA weight=1.


2018-May-23 UT 22:50-23:44 Ill=70% Proclus observed by Cook_MC on 1981-5-12 *

     On 1981 May 12 UT 22:00? M.C. Cook (Frimley, UK and using a 12" 
     reflector), noticed that Censorinus was very bright, fuzzy and 
     occasionally brighter than Proclus. However both Foley (Kent, UK) and 
     Amery (Reading, UK) using a C.E.D. found that Proclus was brighter than 
     Censorinus as it had been during April and May 1981. However Chapman 
     obtained the reverse of this. Cameron 2006 extension catalog ID=138 and 
     weught=3. ALPO/BAA weight=2.


2018-May-23 UT 23:28-00:33 Ill=70% Plato observed by Carle on 1952-11-26

     In 1952 Nov 26 at UT 01:00? Carle (USa, 8" reflector, x700, seeing = 
     poor) observed the following in Plato: "Sketch shows 8 spots -- 5 
     craters showed interior shad., 1 completely filled, but no others seen 
     despite several hrs. of study. Spots that should have been seen were 
     missing. poor seeing converts floor into shimmering shapeless blob. Has 
     observed it under good seeing & seen nothing on fl. as others have 
     noted". The Cameron 1978 catalog ID=555 and weight=3. The ALPO/BAA 
     weight=2. 


2018-May-23 UT 23:30-00:33 Ill=70% Proclus observed by Bartlett on 1976-7-6

     Proclus 1976 Jul 06 UT 01:35 Observed by Bartlett (Baltimore, MD, USA, 
     3" refractor, 40-450x, S=6, T=3) "Nothing vis. on floor (albedo=2 deg?) 
     (usually features are vis.)" NASA catalog weight=4 (high).NASA catalog 
     ID #1437.


2018-May-24 UT 00:02-00:33 Ill=70% Montes_Carpatus observed by McCorkle on 1955-8-27

     On 1955 Aug 27 at UT 01:51 McCorkle (Memphis, Tennessee, USA, 6.5" 
     reflector, x200) observed a 2nd magnitude bright flare on the dark side 
     of the Moon. This remained steady, fading slightly before abruptly 
     disappearing. Cameron suggests that this might have been a meteor. The 
     Cameron 1978 catalog ID=604 and weight=0. The ALPO/BAA weight=1.


2018-May-24 UT 00:26-03:00 Ill=70% Ross_D observed by Capen_CF on 1964-4-21 *

     Ross D 1964 Apr 21 UT 04:23-05:01 Observed by the Capens (CA, 
     USA, 16" and 6", seeing 3-5, transparency 5+) "Obscuration of 
     its rim" NASA catalog weight=4. NASA catalog ID #808. ALPO/BAA 
     weight=2.


2018-May-24 UT 22:53-23:16 Ill=79% Carlini_D observed by Collins_M on 2004-1-2

     2004 Jan 02 UT 09:05 (approx) M. Collins (Palmeston North, New 
     Zealand, ETX 90, seeing 3, clear) saw a possible(?) flash north 
     of Carlini D at about 16W, 35N in adverted vision. It lasted 
     only a split second. The ALPO/BAA weight=1.


2018-May-24 UT 22:56-00:24 Ill=79% Curtis observed by Williams_AS on 1882-8-23

     Williams of the UK, on 1892 Aug 23 at Moon's age 10.0 days, noticed a 
     spot now rated at +1.5 (in brightness) that had been seen on the 21st 
     Aug, near Picard. Williams comments that this is the only obsewrvation 
     that departs "much" from the curve of diurnal brightness. The spot was 
     descibed as "nearly as large as Picard and nearly half as bright. This 
     observation was reported in the Astronomical Register of the Royal 
     Astronomical Society and is not included in the Cameron catalogs. It is 
     one of many measurements of the brightness of this spot for different 
     illumination angles and is one of three outlying brightness points 
     spotted on a graph by Willaims. The ALPO/BAA weight=3.


2018-May-24 UT 23:32-00:24 Ill=79% Atlas observed by Chernov on 1957-8-5

     Observed by Chernov (Russia) "A periodic change in shape of 
     small dark spot at bottom of round spot further N. adjacent to inner 
     wall. It was larger than in proceeding months at same sun elev."
     NASA catalog weight=2 (low). NASA catalog ID #669.


2018-May-25 UT 00:03-00:24 Ill=79% Moltke observed by Marshall_KP on 1984-2-12

     The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25-
     02:20 and 01:40-04:00, however it is not clear what UT applies to which 
     of the observers or the two features reported as having TLP on that 
     night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II) 
     noticed that Moltke was very bright with a fuzzy violet hue - he had 
     never seen it like this before. Cameron 2006 catalog extension TLP ID=
     240 and weight=2. ALPO/BAA weight=3.


2018-May-25 UT 00:03-00:24 Ill=79% Plato observed by Marshall_KP on 1984-2-12

     The UT given in the Cameron 2006 extension catalog are: 20:58, 23:25-
     02:20 and 01:40-04:00, however it is not clerr what UT applies to which 
     of the observers or the two features reported as having TLP on that 
     night. On 1984 Feb 12-13 Marshall (South Anerica, seeing=III-II) saw 
     initially no craterlets in Plato, despite the Moon being at a high 
     altitude. At 01:45UT the northwest corner of Plato was red. Again no 
     other craterlets showed. He found the surrounding wall to be too bright 
     and this was confirmed by Crater Extenction Device readings and had 
     problems focussing on the crater. By 02:00-02:50UT he noticed 
     variability in the visibility of the craterlets. By 03:48UT the central 
     craterlet was much brighter than before and the crater doublet had 
     brightened but the southern craterlet was still invisible. Cameron 
     comments that Marshall was a very experienced observer. A. Cook (of 
     Frimley, UK) obtained a photodiode line scan image of Plato. The 
     brightness of the north west wall was brighter than the bright area on 
     the west wall. Marshall and Mosely both saw a dark area on the floor of 
     Plato close to the south wall (from clock position of 11 o'clock. There 
     was a prominent white spot on the floor and the central craterlet was 
     seen, but only under good conditions. Mosely does not discuss the west 
     and north west wall brughtnesses that were seen earlier by Cook and 
     Marshall. Cameron 2006 catalog extension TLP ID=240 and weight=2. 
     ALPO/BAA weight=3.


2018-May-25 UT 01:08-03:07 Ill=80% Plato observed by Porter on 1976-9-4 *

     Plato 1976 Sep 04 UT 02:35-03:35 Observed by Porter (Sarragansett?, 
     Rhode Island, USA, 6" reflector x100, S=5, T=?) "At 0235h albedo of 
     floor was est. at 3. At 0325h the pt. was albedo =1, 2 whole steps 
     darker than earlier & noticeable to the obs. 10-15 min later it 
     returned to normal. (the few meas. of albedo for this age were 1.5-2 
     which suggests that the meas. of 3 was the anomalous one. Another pt. 
     did darken -- as reported). NASA catalog weight=3 (average). NASA 
     catalog ID #1448.


2018-May-25 UT 01:45-03:07 Ill=80% Ross_D observed by Cross on 1964-4-22 *

     Ross D vicinity 1964 Apr 22 UT 05:43-0637 Observed by Cross et 
     al. (Whittier, CA, USA, 19" reflector, x800-1200 & filters, S=7-
     8, T=1) "Gas cloud over it & its companion; everywhere else was 
     fine detail" NASA catalog weight=5. NASA catalog ID #809. 
     ALPO/BAA weight=3.


2018-May-25 UT 03:03-03:07 Ill=80% Bullialdus observed by Foley_PW on 1975-9-15 *

     Colour seen, mostly blueness on south rim and exterior of south
     rim at Bullialdus crater. Blueness seen too on Plato on inner SSW
     rim, but no colour reported on any other craters. Seeing III,
     12" reflector used x200 and x360.


2018-May-25 UT 03:03-03:07 Ill=80% Plato observed by Foley_PW on 1975-9-15 *

     Colour seen, mostly blueness on inner SSW rim. Blueness also seen
     on south rim and exterior of south rim at Bullialdus crater. No colour
     reported on any other craters. Seeing III, 12" reflector used x200 and 
     x360.


2018-May-25 UT 22:56-23:36 Ill=87% Aristarchus observed by Klein_HJ on 1881-8-6

     Aristarchus, Schroter's Valley, Herodotus 1881 Aug 06 UT 00:00? 
     Observed by Klein (Cologne, Germany, 6" refractor, 5" reflector) 
     "Whole region between these features appeared in strong violet 
     light as if covered by a fog spreading further on 7th. Examined 
     others around & none showed effect. Intensity not altered if 
     Aris. placed out of view." NASA catalog weight=4 (high). NASA 
     catalog ID #224. ALPO/BAA weight=3.


2018-May-25 UT 23:29-02:46 Ill=87% Plato observed by Mobberley_M on 1982-6-2 *

     Plato 1982 Jun 02 UT 22:00. Mobberley could not see the 
     central craterlet on the floor of Plato tonight. Foley notes 
     that he could only just see the central craterlet on nights of 
     2-5th Jun and it was of reduced in brightness from normal. 
     North reported that the floor seemed nearly black, but 
     brighter in a green filter (x144 magnification used). All 
     three observers compared the Plato area to other areas for 
     reference. All the above seems normal, apart from the floor
     being brighter in the green filter. Cameron 2006 extension 
     catalog ID 170 and weight=5. BAA/ALPO weight=3.


2018-May-27 UT 00:30-03:15 Ill=93% Proclus observed by Bartlett on 1976-9-6 *

     Proclus 1976 Sep 06 UT 02:00 Observed by Bartlett (Baltimore, MD, USA, 
     4.5" reflector 45-300x, S=3, T=5) "Nothing vis. on floor of 2deg 
     brightness. Usually floor ray & Proc. A are vis. at this col. & c.p. is 
     5 deg bright. (must have been 2 deg tonite)." NASA catalog weight=4. 
     NASA catalog ID #1450.


2018-May-27 UT 23:01-23:18 Ill=97% Aristarchus observed by Louderback_D on 1988-1-2 *

     On 1988 Jan 02 at 06:41-07:08 UT D. Louderback (South Bend, WA, USA, 
     using a 8" reflector, seeing 4 out of 10) observed that at 06:56 UT 
     Aristarchus floor (point F) brightened rapidly from an intensity of 5.2 
     to 6, however at 07:08 UT the spot returned to normal. He also noticed 
     that the bands on the walls varied every few minutes. A mist like 
     appearance was seen on the floor of Aristarchus. Through a red filter 
     he could see through the haze, but floor detail could not be seen 
     through a blue filter. Cameron 2006 extension catalog ID=316 and 
     weight=4. ALPO/BAA weight=3.


2018-May-28 UT 23:04-23:42 Ill=100% Madler observed by Haas_W on 1940-8-17 *

     Madler 1940 Aug 17 UTC 06:45 (Cameron gives 07:30 but Haas says 
     this is wrong) Observed by Haas (New Mexico?, USA, 12" 
     reflector?) "Bright spot on S. rim had I=5.9 on this date but 
     6.8 on Sep. 16, when observ. cond. were similar (see #473)" NASA 
     catalog weight=4. NASA catalog ID #470. ALPO/BAA weight=3.


2018-May-28 UT 23:51-03:16 Ill=100% Plato observed by Maggini_M on 1916-10-10 *

     Plato 1916 Oct 10 UT 21:00? Observed by M, Maggeni (Florence 
     Obs., Italy) "Reddish shadow spread over part of crater. Looked like 
     vapor (like nitrous vapor) and obscured underlying craters. The Cameron 
     1978 catalog weight=3 and ID = 365. The ALPO/BAA weight=3.


2018-May-29 UT 02:57-03:16 Ill=100% Eratosthenes observed by Bartlett on 1976-9-8 *

     Eratosthenes 1976 Sep 08 UTC 04:29 Observed by Bartlett (Baltimore, MD, 
     USA, 4.5" reflector 45-225x, S=5-4, T=5) "Psuedo-shadow X3 was present 
     but X disappeared from wall(same intensity?) which was rated 4 deg. 
     Disappearance of X so unexpected that he examined inner S wall very 
     carefully & was certain it was free from psuedo-shad. Had vanished 
     within 24h. Other pseudo-shadows showed no change. X reappeared next 
     nite. (X must have been 4deg; &this is much higher than any other 
     meas.). Variability of wall shadows may habe been what Pickering saw, 
     suggests Bartlett." Cameron 1978 TLP catalog weight=4 and catalog ID
     1452. ALPO/BAA weight=2.