TLP Repeat Illumination/Libration and Earthshine predictions for: Finland - Helsinki



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-03 UT 19:35-20:35 Ill=60% Plato observed by Bianchini on 1725-8-16 *

     A track of reddish light, like a beam, was seen
     crossing the shadowed floor of Plato.This TLP has an ID
     No. of 17 in Cameron's 1978 catalog and a weight
     of 3. It has an ALPO/BAA weight of 2.


2025-Jul-03 UT 19:35-19:41 Ill=60% Alphonsus observed by Horowitz on 1967-8-13 *

     Alphonsus 1967 Aug 13 UT 18:40-18:55 Observed by Horowitz (Haifa, 
     Israel, 8" reflector?) "Glow or hazy patch seen while using filters. 
     Brighter than background. Not seen after 2055 or next nite" NASA 
     catalog weight=3 (average). NASA catalog ID #1041.


2025-Jul-04 UT 19:34-19:48 Ill=69% Kepler observed by Morales on 1884-2-5 *

     Morales of France?, observed "an illumination" in Kepler on 1884 Feb 05 
     at UT20:00?. The Cameron 1978 catalog ID is 241 and the weight=1. The 
     ALPO/BAA weight=1.


2025-Jul-11 UT 22:30-22:31 Ill=99% Aristarchus observed by Manske_R on 1989-6-20 *

     On 1989 Jun 20 UT 0628-06:58 R. Manske (Sun Praire, WI, USA, 1" 
     refractor) discovered blue on the north west inner wall and red on the 
     south east outer wall. At 05:39 he could see the blue but not the red. 
     No colour was detected on Tycho, but he thought that he could detect a 
     pinkish colouration over the whole Moon. The Cameron 2006 catalog ID=
     367 and the weight=1. The ALPO/BAA weight=1.


2025-Jul-11 UT 23:49-00:33 Ill=99% Mons_Pico observed by Foley_PW on 1975-12-19 *

     On 1975 Dec ?? at 19:00UT P.W.Foley (Kent, UK), and possibly P. Moore? 
     (Selsey, UK) - unusual events were reported which might have been due 
     to minor structral changes. Albedo=76% (=7.6?). Cameron 1978 catalog 
     ID=1425 and weight=3. ALPO/BAA weight=1.


2025-Jul-12 UT 21:52-23:06 Ill=95% Aristarchus observed by Manske_R on 1989-6-21 *

     On 1989 Jun 21 at UT07:03-07:27, R. Manske (Sun Praire, WI, USA, 1 
     "refractor) found the colours pink and blue on Aristarchus, like the 
     previous day, however this time there was also an orange tinge on the 
     "back"" (North?) rim of Sinus Iridum and the same too on mare Crisium, 
     all the way past Plato, in the direction of Cassini. This colour was 
     not seen at higher magnifications. The Cameron 2006 catalog ID=368 and 
     the weight=0. The ALPO/BAA weight=1.


2025-Jul-12 UT 21:52-23:06 Ill=95% Cassini observed by Manske_R on 1989-6-21 *

     On 1989 Jun 21 at UT 07:03-07:27 R. Manske (Sun Praire, WI, USA, 1" 
     refractor) saw orange on Cassini all the way past Mare Imbrium edge,
     Plato etc - maybe atm. At high power (8mm eyepiece) & no filter. Saw no 
     hint of color (due to smearing at high power?)." The Cameron 2006 
     catalog ID=368 and the weight=0. The ALPO/BAA weight=1.


2025-Jul-12 UT 21:52-23:06 Ill=95% Mare_Imbrium observed by Manske_R on 1989-6-21 *

     On 1989 Jun 21 at UT 07:03-07:27 R. Manske (Sun Praire, WI, USA, 1" 
     refractor) saw orange on Mare Imbrium edge all the way past Plato upto 
     Cassini - maybe atm. At high power (8mm eyepiece) & no filter. Saw no 
     hint of color (due to smearing at high power?)." The Cameron 2006 
     catalog ID=368 and the weight=0. The ALPO/BAA weight=1.


2025-Jul-12 UT 21:52-23:06 Ill=95% Plato observed by Manske_R on 1989-6-21 *

     On 1989 Jun 21 at UT 07:03-07:27 R. Manske (Sun Praire, WI, USA, 1" 
     refractor) saw orange on Plato all the way past Mare Imbrium edge upto 
     Cassini - maybe atm. At high power (8mm eyepiece) & no filter. Saw no 
     hint of color (due to smearing at high power?)." The Cameron 2006 
     catalog ID=368 and the weight=0. The ALPO/BAA weight=1.


2025-Jul-12 UT 21:52-23:06 Ill=95% Promontorium_Laplace observed by Manske_R on 1989-6-21 *

     On 1989 Jun 21 at UT 07:03-07:27 R. Manske (Sun Praire, WI, USA, 1" 
     refractor) saw orange on the north? wall of Sinus Iridum and over a 
     large part of the north of Mare Imbrium - "maybe atm. At high power 
     (8mm eyepiece) & no filter. Saw no hint of color (due to smearing at 
     high power?)." The Cameron 2006 catalog ID=368 and the weight=0. The 
     ALPO/BAA weight=1.


2025-Jul-15 UT 01:00-01:32 Ill=81% 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.


2025-Jul-15 UT 01:13-01:32 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.


2025-Jul-15 UT 23:42-00:33 Ill=72% 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.


2025-Jul-15 UT 23:42-00:33 Ill=72% 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.


2025-Jul-15 UT 23:42-00:05 Ill=72% 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. 


2025-Jul-16 UT 01:32-01:34 Ill=72% Plato observed by Mobberley_M on 1981-10-18

     On 1981 Oct 18 UT 22:14022:16 M.Mobberley (Bury St Edmunds, UK, 
     14" Cassegrain, seeing variable, transparency misty) found that 
     the central craterlet on the floor of Plato was not visible, 
     despite it being visible under similar colongitudes on other 
     nights. Might be due to observing conditions, but observer 
     suspicous. At 02:08 the observer comments that the central 
     craterlet was ellusive, and at 02:42, though it is uncertain 
     whether they regarded it as suspicous still at this stage? 
     ALPO/BAA weight=1.


2025-Jul-16 UT 23:28-23:33 Ill=62% 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.


2025-Jul-16 UT 23:28-23:44 Ill=62% 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.


2025-Jul-16 UT 23:38-01:18 Ill=62% 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.


2025-Jul-16 UT 23:52-01:36 Ill=62% 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. 


2025-Jul-17 UT 01:04-01:36 Ill=61% 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.


2025-Jul-17 UT 23:27-23:30 Ill=51% 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.


2025-Jul-17 UT 23:32-01:19 Ill=51% 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.


2025-Jul-17 UT 23:27-00:14 Ill=50% Earthshine: sporadic meteors

2025-Jul-18 UT 00:55-01:38 Ill=50% 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.


2025-Jul-18 UT 01:35-01:38 Ill=50% Aristarchus observed by Moseley_T on 1968-7-18

     Aristarchus and Cobra Head 1968 Jul 18 UT 00:50-01:30 
     Observed by Moseley & Corvan (Armagh, N.Ireland, 10" 
     refractor, x255) and by Moore (Selsey, England, 3" refractor, 
     x 120) "Distinct red glow & obscur. 1st at 0050 S. of C.H. & 
     same size. At 0052h saw color on S.wall of Aris. Both 
     persisted till 0100h then both (faded, then brightened, then 
     faded. Plato, Gassendi & Kepler checked with neg. results. 
     Obscured areas reached greatest extent at 0125h wgen it was 
     1/2 size of C.H. & SSE (ast. ?) of it. Moore was alerted to 
     it & saw it in blink, but not vis. at 0107-0220". NASA 
     catalog weight=5. NASA catalog ID 1085. ALPO/BAA weight=4.


2025-Jul-18 UT 23:36-00:17 Ill=39% Earthshine: sporadic meteors

2025-Jul-19 UT 22:40-00:41 Ill=28% 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.


2025-Jul-19 UT 22:40-00:41 Ill=28% 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.


2025-Jul-19 UT 23:57-01:17 Ill=28% 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.


2025-Jul-19 UT 23:57-00:21 Ill=28% Earthshine: sporadic meteors

2025-Jul-20 UT 00:26-01:42 Ill=28% 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.


2025-Jul-20 UT 22:05-00:26 Ill=19% 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.


2025-Jul-22 UT 01:22-01:46 Ill=10% 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.