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


2018-May-01 UT 01:32-03:45 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-01 UT 05:11-07:03 Ill=98% Aristarchus observed by Bartlett on 1976-8-11 *

     Aristarchus 1976 Aug 11 06:44 Observed by Bartlett (Baltimore, MD, USA, 
     4.5" reflector, 45-300x, S=4-3, T=4) "Pale viol. radiance (gas?) on 
     plateau m. Dark viol. tinge on nimbus. C.p.=10 deg walls=8deg, & all of 
     floor=8 deg. W.wall out of focus due to haziness (gas?)." NASA catalog 
     weight=4 (high). NASA catalog ID #1441.


2018-May-01 UT 06:25-07:03 Ill=98% Arago_B observed by Mobberley_M on 1983-1-29 *

     On 1983 Jan 29 at UT22:09 M.Mobberley (Sulfolk, UK, 14" reflector) 
     noted that Arago B had a slight tinge of violet colour, and was a lot 
     less (bright?) than Torricelli B's blueness. Other craters checked but 
     were not showing any blue colour. The Cameron 2006 catalog ID=198 and 
     weight=5. The ALPO/BAA weight=3. 


2018-May-01 UT 06:25-07:03 Ill=98% Moltke observed by Mobberley_M on 1983-1-29 *

     On 1983 Jan 29 at UT22:09 M. Mobberley (Suffolk, UK), found that Moltke 
     crater was "exceptionally bright". Other craters (apart from Arago B 
     Torricelli B etc) appeared normal. The Cameron 2006 catalog ID=198 and 
     the weight=5. The ALPO/BAA weight=2.


2018-May-01 UT 06:44-07:03 Ill=98% Torricelli_B observed by Foley_PW on 1983-1-29 *

     Torricelli B 1983 Jan 29/30 UTC 20:35-02:30 Observed by Foley (12" 
     reflector, seeing Antoniadi II, Transparency=good, no spurious colour 
     seen), Moberley (14" reflector, seeing Antoniadi II, transparency 
     excellent, spurious colour strong), Cook, J & M (12" reflector, seeing 
     Antoniadi II-III, transparency moderate). All observers based in 
     southern England. "Initially crater brightest feature on the Moon, then 
     it faded. Strong colour also seen by all observers e.g. green-blue to 
     violet. Report of observations written up in JBAA Vol 100, No. 3, p117 
     123, (2000) - probably one of the best reorted TLP". The Cameron 2006 
     catalog ID=198 and weight=5. The ALPO/BAA weight=5.


2018-May-02 UT 05:58-07:02 Ill=95% Aristarchus observed by Bartlett on 1976-8-12 *

     Aristarchus 1976 Aug 12 UT 07:30 Observed by Bartlett (Baltimore, MD, 
     USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg, 
     S.floor=6deg & was red; rest of floor=8deg. This is only tint in 
     Aris.). Tonite saw a pale red glow suffasing the S. region of the 
     crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on 
     plateau m gone tonite. Red glow on 13th & the region was yellow-
     brown." NASA catalog weight=4 (high). NASA catalog ID #1442.


2018-May-03 UT 06:00-06:54 Ill=90% Aristarchus observed by Bartlett on 1976-8-13 *

     Aristarchus 1976 Aug 13 UT 07:30 Observed by Bartlett (Baltimore, MD, 
     USA, 4.5" reflector 45-225x, S=6=3, T=5) "Nimbus around c.p.=2deg, 
     S.floor=6deg & was red; rest of floor=8deg. This is only tint in 
     Aris.). Tonite saw a pale red glow suffasing the S. region of the 
     crater. Bright blue radiance (gas?) on ENE wall. Viol. radiance on 
     plateau m gone tonite. Red glow on 13th & the region was yellow-
     brown." NASA catalog weight=4 (high). NASA catalog ID #1442.


2018-May-20 UT 00:38-01:15 Ill=26% Picard observed by Neate on 1909-3-26

     E. of Picard 1909 Mar 26 UTC 19:15-20:20 Observed by Neate (England, 
     4" refractor x170) "Bright spot. (feature is similar to Linne. Rays 
     difficult to see till high sun). Hazy ill-defined brighter in S. 
     (Draw.)." NASA catalog weight=1 (low). NASA catalog ID #329.


2018-May-20 UT 01:07-01:15 Ill=27% Moon observed by Day on 1881-9-28

     On 1881 Sep 28 at UT 03:00 Day (Prescott, AZ, USA) observed a comet-
     like object pulling across the Mon. The Cameron 1978 catalog ID=225 and 
     the weight=2. The ALPO/BAA weight=1.


2018-May-21 UT 00:41-02:58 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 00:41-01:04 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 00:47-01:51 Ill=37% Kant observed by Trouvelot on 1873-1-4

     Kant 1873 Jan 04 UT 23:00? Observed by Trouvelot (Cambridge, Mass, 8" 
     refractor) "Luminous puplish vapors" NASA catalog weight=3 (average). 
     NASA catalog ID #180.


2018-May-21 UT 01:07-01:51 Ill=37% Aristarchus observed by Hobdell on 1981-5-10

     On 1981 May 10 at UT02:16-03:12 B. Hobdell (St Peterburg, FL, USA, 2?" 
     refractor, the Moon was at a very low altitude) found that the NNW wall 
     of Aristarchus increased in brightness and extended to an arc of the 
     east wall. There were bright flashes in roughly 2 minute intervals. 
     There were also two yellow spots at 5 and 8 o'clock on the east wall. 
     At 02:44UT a bright yellow flash was seen on the NNW rim and by 02:49UT 
     the complete crater was very bright, inparticular on the western wall. 
     Further bright flashes were seen at 02:52UT and at 03:11UT many bright 
     blue points were seen. Finally an obsecuration was seen at 03:12UT. The 
     observer checked for spurious colour but none was seen. The Cameron 
     2006 catalog ID=137 and weight=0. The ALPO/BAA weight=1. 


2018-May-22 UT 00:44-02:08 Ill=49% 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 00:44-02:12 Ill=49% Proclus observed by Cook_MC on 1987-11-27

     On 1987 Nov 27 at 19:35-21:04 UT M.C. Cook (Frimley, UK, 
     seeing IV-V) saw spurious colour on the crater floor and also 
     on the rim. Two bright spots were seen on the west rim (the 
     brightest one was on the NW rim). Saw >>N-NW lip 21:00UT 
     blink in red. The was apparently confirmed by A.C. Cook 
     (according to Cameron) at 21:04UT. The ALPO/BAA weight, in 
     view of the poor observing conditions is 1.


2018-May-22 UT 01:36-02:16 Ill=49% Censorinus observed by Cook_MC on 1987-11-27

     On 1987 Nov 27 at 20:56-21:12 UT M.C. Cook (Frimley, UK, seeing 
     IV-V) saw spurious colour on the Proclus floor and also on the 
     rim.  At 20:56UT Censorinus was quite dull and diffuse, spurious 
     colour but no blink. Sketches made. Cameron 1978 catalog ID=314 
     and weight=5. The ALPO/BAA weight, in view of the poor 
     observing conditions is 2.


2018-May-23 UT 00:47-01:31 Ill=60% 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 00:47-02:07 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 00:48-02:29 Ill=60% Proclus observed by Mobberley_M on 1987-11-28

     On 1987 Nov 28 UT at 20:14 (possibly earlier)-20:44 M.Mobberley saw the 
     northern rim of Proclus very bright for first quarter. There were 
     streaks half way up the wall and these seemed to vary in brightness and 
     length in seconds. Seeing was at first suspected but became doubtful 
     over this being a cause. There was also another bright streak that 
     changed brightness over 5 minute intervals (Cameron says that this is 
     not atmospheric) Apparently video was taken and confirms the effects. A 
     sketch was also made. M. Cook detected a blink with coloured filters 
     i.e. being brighter in red light (Also apparently confirmed by 
     Louderback). Estimated the north west wall was x3 brighter than 
     Censorinus. Censorinus itself varied in brightness as measured using 
     CED devices. P. Foley decided that the north was was much brighter than 
     Proclus (beyond the limits of the scale. However both Moore and Mason 
     agreed that the north wall of Proclus was very bright but shimmering 
     around in the bad seeing. They did not see any bright spots either. 
     A.C. Cook (20:18-20:44UT) confirmed that the north wall of Proclus was 
     very bright. Towards the end of the observing period the north wall had 
     faded from this maximum brightness - Cameron suspects that this might 
     have been as a result of an eyepiece misting up. The TLP was also 
     observed by Foley (Maidstone, Kent, UK) and he reported: "Bright spot 
     on north wall, Moon blink reaction". A BAA Lunar Section report with 
     extracts from the 2006 Cameron catalog. Cameron 2006 catalog ID=315 and 
     weight=4 (or 5?). ALPO/BAA weight=3. Apart from Louderback, all 
     observers were based in the UK and had a vatiety of telescopes and 
     observings conditions.


2018-May-23 UT 01:18-02:29 Ill=60% Censorinus observed by Cook_MC on 1987-11-28

     On 1987 Nov 28 M. Cook (Frimley, UK) found Censorinus varied in 
     brightness as measured using CED devices. P. Foley decided that the 
     north was was much brighter than Proclus (beyond the limits of the 
     scale). However both Moore and Mason agreed that the north wall of 
     Proclus was very bright but shimmering around in the bad seeing. They 
     did not see any bright spots either. A.C. Cook (20:18-20:44UT) 
     confirmed that the north wall of Proclus was very bright. Towards the 
     end of the observing period the north wall had faded from this maximum 
     brightness - Cameron suspects that this might have been as a result of 
     an eyepiece misting up. The TLP was also observed by Foley (Maidstone, 
     Kent, UK) and he reported: "Bright spot on north wall, Moon blink 
     reaction". A BAA Lunar Section report with extracts from the 2006 
     Cameron catalog. Cameron 2006 catalog ID=315 and weight=4 (or 5?). 
     ALPO/BAA weight=2. Apart from Louderback, all observers were based in 
     the UK and had a vatiety of telescopes and observings conditions.


2018-May-23 UT 02:06-02:29 Ill=60% Alphonsus observed by Moore_P on 1967-2-17

     Alphonsus 1967 Feb 17 UT 17:47-18:12 Observed by Moore and 
     Moseley (Armagh, Northern Ireland, 10" refractor, x300) "Eng. 
     moonblink suspected just inside SW floor on the elevation NW of 
     famous dark patch. Feb 18 was cloudy, then on Feb 19, after some 
     neg. results with blink, suddenly a bright glow in same place." 
     NASA catalog weight=4. NASA catalog ID #1014. ALPO/BAA weight=4.


2018-May-23 UT 02:28-02:29 Ill=61% Hipparchus_L observed by Coates_J on 1979-5-4

     On 1979 May 04 at 21:30-22:00UT Coates detected a star-like point 
     inside Hipparchus L crater using averted vision. Cameron in her 2006 
     catalog extension comments that Hipparchus L is a highlands impact 
     crater with a rille on the western ejecta blanket. The crater is the 
     smallest one in a chain that are sequenced to be half the size of the 
     previous crater in the chain. Apparently the largest crater in the 
     chain is Hind with a largely landslide covered floor - although on the 
     south is a dome? with a summit crater. Cameron's 2006 catalog extension 
     gives this TLP an ID of 51 and a weight=2. The ALPO/BAA weight=2.  


2018-May-24 UT 00:50-01:25 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-24 UT 00:50-01:59 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 00:50-04:21 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 00:50-01:27 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 01:05-02:31 Ill=70% Aristarchus observed by Madej_P on 1984-12-31

     Although the crater was on the night side, a small bright spot
     was seen. This was blue, almost UV, and equivalent to a star of
     magnitude 2. It flashed over intervals of about 30 seconds
     and changed in colour from UV to blue. The BAA Lunar Section
     TLP network was alerted. Mobberly and J.Cook did not see much
     although J. Cook may have seen something, but located else where?
     Cameron lists this as a confirmed? observation? The Cameron
     2006 TLP xtension catalog has this TLP with an ID No. of 258
     and a weight of 4. The ALPO/BAA weight is 2.


2018-May-24 UT 01:58-02:32 Ill=71% Plato observed by King_N on 1983-4-21

     On 1983 Apr 21 at UT 21:55-22:05 N. King (Winersh, Berkshire, UK, using 
     a 150cm f/8 reflector, with seeing I and transparency good, little 
     spurious colour, just a little in Plato). Although observing since 
     21:25UT the observer noticed  a cery, just detactable faint green 
     colour just after the dark shade around the inner eastern crater rim. 
     The effect faded and by 22:05UT had completely gone. This report is not 
     in the Cameron 2006 catalog. It is a BAA report. The ALPO/BAA weight=2.


2018-May-25 UT 00:53-01:24 Ill=80% 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 00:53-02:00 Ill=80% 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 00:53-02:00 Ill=80% 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 01:08-05:00 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 01:45-05:07 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 02:06-02:21 Ill=80% Proclus observed by Cameron_W on 1988-12-18

     On 1988 Dec 18 at UT20:25 W. Cameron (Sedona, AZ, USA - TV camera 
     telephoto) noticed on a live TV shot of the Moon (apparently channel 3 
     TV broadcast at 11:25PM local time), that Proclus was brighter than 
     Censorinus (or Dionysus) and was the brightest feature on the Moon. It 
     was photographed from San Juan in Puerto Rico. Cameron 2006 catalog ID=
     342 and weight=. ALPO/BAA weight=5. ALPO/BAA weight=1.


2018-May-25 UT 03:03-05:07 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 03:03-05:07 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-26 UT 00:56-02:46 Ill=88% 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-26 UT 01:20-01:25 Ill=88% Daniell observed by Madej_P on 1982-4-4

     On 1982 Apr 04 at UT 23:30-00:25 P. Madej (Huddersfield, UK, 7cm 
     refractor & 16cm reflector) noticed the TLP in his refractor 
     first of all at x25. So stepped up the magnification to x111 and 
     found the crater brightness not what he was expecting. He tried 
     different filters but found no difference in brightness. With 
     the 16cm reflector however some changes in brightness were 
     dected. The crater has a very pale yellow colour and it was 
     slightly darker than Lacus Somniorum. P. Foley tried to confirm 
     at 00:09 but the crater looked normal then. The Cameron 2006 
     catalog extension TLP ID is 167 and weight=3. ALPO/BAA weight=2.


2018-May-27 UT 00:59-04:23 Ill=94% 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-29 UT 01:04-03:43 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 02:57-05:15 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.