TLP Repeat Illumination/Libration and Earthshine predictions for: Latvia - Riga

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-Jul-16 UT 20:00-20:08 Ill=19% Picard observed by Unknown_English_Observer on 1909-5-23 *

     In 1909 May 23 at UT 18:00? an unknown English observer observed a 
     bright spot east of Picard. The Cameron 1978 catalog ID=330 and the 
     weight=1. The ALPO/BAA weight=1.

2018-Jul-21 UT 19:04-21:35 Ill=70% Alphonsus observed by Brook_C on 2001-6-29 *

     On 2001 Jun 29 at UT22:16-22:22 C. Brook (Plymouth, UK, 60mm refractor, 
     x120, no spurious colour seen, seeing I) observed that the central 
     peaks of Alphonsus looked bright at 22:16UT but had dimmed by 22:22UT. 
     The three dark patches on the floor of Alphonsus were clearly seen. The 
     ALPO/BAA weight=1.

2018-Jul-21 UT 19:04-21:35 Ill=70% Arzachel observed by Brook_C on 2001-6-29 *

     On 2001 Jun 29 at UT 22:16-22:20 C. Brook (Plymouth, UK, seeing 
     conditions very good, x120) reported that the central peak of Alphonsus 
     was brighter than the central peak of Arzachel (or was it the other way 
     around?). Cook observed 4 hours later from Washington DC, USA and found 
     that on CCD images that the central peak of Alphonsus was only slightly 
     less than that of Arzachel. The ALPO/BAA weight=2.

2018-Jul-22 UT 18:48-19:35 Ill=78% Mons_Piton observed by Moore_P on 1958-9-23 *

     Piton 1958 Sep 23 UT 00:00? Observed by Moore? (UK?) "Enveloped 
     in an obscuring cloud-like mist" NASA catalog ID 697. NASA 
     catalog weight=2. ALPO/BAA weight=2.

2018-Jul-23 UT 19:18-19:51 Ill=86% Plato observed by Watkins_E on 1972-1-26 *

     Plato and Plato A 1972 Jan 26 UT 18:25-18:55 Observed by Watkons and 
     Hunt (England, 4.5" reflector x150, x225, and a 2.75" refractor) "Misty 
     patch over A, & a misty brightness over SW wall of Plato. Hunt saw 
     nothing unusual." NASA catalog weight=2 (low). NASA catalog ID #1321.

2018-Jul-24 UT 18:45-20:24 Ill=92% Aristarchus observed by Lipskii on 1964-6-21 *

     On 1964 Jun 21 at UT 21:18 Lipskii and Pospergelis (Shternberg State 
     Ast. Institute, AZI-2" reflector (Cass.) observed Aristarchus: 
     "Polarization meas. with electron polarimeter. Plane of polariz. 
     rotated 2deg fr. the adjacent areas. They interpret it as some 
     scattering medium over the crater. (Source gave date as 6/31/64, 
     misprint =21st?)". The Cameron 1978 catalog ID=820 and weight=5. The 
     ALPO/BAA weight=4. 

2018-Jul-25 UT 21:38-23:37 Ill=97% Unknown observed by Miranova on 1960-9-4 *

     On 1960 Sep 04 at UT00:00? Miranova (Russia or Israel) observed a TLP 
     at an unnamed lunar feature: "Spectral photom. of some lunar obj. in 
     4250, > 5000A bands. Spectral plates". Cameron suspects luminescence? 
     The Cameron 1978 catalog ID=730 and weight=5. The ALPO/BAA weight=1.

2018-Jul-26 UT 22:10-00:32 Ill=99% Riccioli observed by Brittman_O on 1964-6-24 *

     During an eclipse of the Moon the crater appeared normal until it
     emerged from the shadow. In the north east the dark floor was
     not its normal hue and two light areas appeared to join. The
     emerging patches became less and less bright, finally disappearing
     at 0345 UT when the crater returned to normal. Cameron 2006 catalog 
     extension ID=10 and weight=2. ALPO/BAA weight=2.

2018-Jul-27 UT 19:36-21:02 Ill=100% Copernicus observed by Beccaria on 1772-10-11 *

     Bright spot (4th magnitude) seen on eclipsed Moon
     and glimmering specks. Seen by nephew and neice of Beccaria.
     Cameron 1978 catalog weight=4. ALPO/BAA catalog weight=2.

2018-Jul-27 UT 19:36-22:14 Ill=100% Lunar_Eclipse observed by Airy on 1877-8-23 *

     On 1877 Aug 23/24 at UT 23:10-01:00 Airy, Pratt and Capron (Greenwich, 
     England, France) observed during a lunar eclipse an unusual spectrum 
     with strong absorption in yellow. (Airy) 2 patches of crimson light of 
     short duration. Cameron says that this is a confirmation observation 
     and that Airy was the Astronomer Royal. The cameron 1978 catalog ID=197 
     and weight=5. The ALPO/BAA weight=4.

2018-Jul-27 UT 19:36-20:01 Ill=100% Stofler observed by Albright on 1910-11-16 *

     On 1910 Nov 16/17 UT 22:50-00:10 Albright (Edge(b?)aston, England, UK) 
     observed in Stofler crater "A luminous pt. on Moon dur. ecl. (mid-ecl 
     0025) Others saw a meteor on moon from widely seperated places". The 
     Cameron 1978 catalog ID=333 and the weight=3. The ALPO/BAA weight=3.

2018-Jul-27 UT 19:36-19:55 Ill=100% Eratosthenes observed by Haas_W on 1949-10-7 *

     Eratosthenes 1949 Oct 07 UT 04:14-05:22 W.Haas (USA) and O'Toole 
     (USA) observed some changes in intensity of features inside this 
     crater - after a lunar umbral passage. The effect lessened over 
     time. Comparisons had been made with measured intensities on the 
     previous and subsequent nights and on other months around the 
     time of Full Moon. The ALPO/BAA weight=1.

2018-Jul-27 UT 19:36-21:11 Ill=100% Aristarchus observed by Budine on 1964-12-19 *

     On 1964 Dec 19 at UT 03:13-03:14 Budine and Farrell (Binghamton, New 
     York, USA, 4" refractor, x200, S=7, T=5) observed that Aristarchus 
     brightened five times over 1 minute during a lunar eclipse. The cameron 
     1978 catalog ID=870 and weight=5. The ALPO/BAA weight=3.

2018-Jul-27 UT 20:19-00:14 Ill=100% Grimaldi observed by Azevado on 1964-6-25 *

     On 1964 Jun 25 at UT ~01:07 Rubens de Azevedo (Brazil) observed 
     a white streak from Grimaldi on the limb, during an eclipse. The 
     Cameron 1978 catalog ID=822 and weight=4. The ALPO/BAA weight=2.

2018-Jul-27 UT 20:41-22:11 Ill=100% Janssen observed by Taylor_AR on 1964-12-19 *

     On 1964 Dec 19 at UT 01:55 A.R.Taylor (London, UK) suspected 
     a brief pinpoint of light near Janssen (unconfirmed). The 
     ALPO/BAA weight=1.

2018-Jul-27 UT 21:57-00:14 Ill=100% Aristarchus observed by Titulaer_C on 1964-6-25 *

     On 1964 Jun 25 at UT ~01:07 Titulaer (Utrecht, the 
     Netherlands) observed that Aristarchus crater was very bright 
     during an eclipse. The Cameron 1978 catalog ID=822 and weight=4. 
     The ALPO/BAA weight=1.

2018-Jul-27 UT 23:03-01:37 Ill=100% Aristarchus observed by Moye on 1905-2-19 *

     On 1905 at Feb 19 at UT 18:00-19:03 Moye (Montpelier, France) observed 
     Aristarchus shining as a star in the dark, during a lunar eclipse. The 
     Cameron 1978 catalog ID=320 and he weight=3. The ALPO/BAA weight=3. The 
     ALPO/BAA weight=2.

2018-Jul-27 UT 23:12-01:07 Ill=100% Atlas observed by Chernov on 1950-4-2 *

     In 1950 Apr 02 at UT 20:00 Chernov (Russia) observed two dark spots in 
     Atlas during a penumbral phase of a lunar eclipse to quickly darken and 
     become sharp in detail. The cameron 1978 catalog ID=524 and weight=1. 
     The ALPO/BAA weight=1.

2018-Jul-28 UT 01:25-01:37 Ill=100% Lunar_Eclipse observed by Cameron_W on 1968-4-13 *

     On 1968 Apr 13 at UT05:00-05:45 Cameron and Laczo (Greenbelt, MD, USA, 
     6" refractor, x50, 36" reflector x400, 12" reflector x80, seeing= 
     excellent) observed for the folliwing craters: Aristarchus, Pytheas, 
     Euler?, Censorinus, Plinius?, Proclus, Menelaus, Manilius: "Star-like 
     pts. in the craters. Only Aris. identified certainly, rest fairly 
     certain except Euler & Plinius. Seen in 6-in refr. at 50x but not in 
     36-in refl. at 400x where they were bright, but not star-lie pts. Seen 
     later in 12-in refl. at 80x. In another bldg. Seen 1st @ 1/2h before 
     totality ended, but not earlier dur. tot. tho't by author (WSC) to be 
     geom. & instrumental = power effect". Chilton, K.E. reports in RASCJ 
     that another observer did not report any of what the Greenbelt observers
     saw at all?The Cameron 1978 catalog ID=1065 and weight=4. The 
     ALPO/BAA weight=1.

2018-Jul-28 UT 23:33-02:24 Ill=99% Proclus observed by Green_SM on 1938-11-8 *

     Proclus 1938 Nov 08 UTC 20:00 Observed by Green (England? Seeing = 
     good) "2 bright spots in Schmidt & Wilkins' craterlets. Was struck by 
     whitish aspect of parts of floor -- possibly mists. S.wall concealed by 
     these strong white patches, as if breached ring." NASA catalog weight=3 
     (average). NASA catalog ID #443.

2018-Jul-29 UT 01:32-02:24 Ill=99% Macrobius observed by McLeod on 1938-11-8 *

     Macrobius 1938 Nov 08 UTC 18:00? Observed by McLeod (England? 5" ? 
     reflector) "Changes in dark areas. (near Proclus where Green saw 
     phenomenom. see #443)" NASA catalog weight=2 (low). NASA catalog ID #

2018-Jul-29 UT 20:20-21:43 Ill=96% Lichtenberg observed by Barcroft on 1940-10-18 *

     Lichtenberg area 1940 Oct 18 UT 07:11 Observed by Barcroft 
     (Madera, CA, USA, 6" reflector) "Pronouced reddish-brown or 
     orange color, less marked on next nite, & slight on 22nd, see 
     #'s 477, 478." NASA catalog weight=3. ALPO/BAA weight=2. NASA 
     catalog ID #476.

2018-Jul-30 UT 20:36-21:20 Ill=92% Lichtenberg observed by Barcroft on 1940-10-19 *

     Lictenberg Area 1940 Oct 19 UT 07:11 Observed by Barcroft 
     (Madera, CA, 6" reflector) Pronounced reddish-brown or orange 
     color. Less marked than previous night, & slight on 22nd. See 
     #'s 477; 478". NASA catalog weight=3. NASA catalog ID #476. 
     ALPO/BAA weight=2.

2018-Jul-31 UT 00:20-00:53 Ill=91% Posidonius observed by Schmidt_J on 1849-2-11

     Posidonius 1849 Feb 11 UT 02:00? Observed by Schmidt (Athens, Greece, 
     7" refractor) "Bright little crater in it was shadowless. Schroter saw 
     repeated changes in it & others & once saw this crater's shadow 
     replaced by a gray veil. Gruithuisen saw the same thing as Schroter in 
     1821." NASA catalog weight=4 (high). NASA catalog ID #128. ALPO/BAA 

2018-Jul-31 UT 00:48-02:17 Ill=91% Aristarchus observed by Brook_C on 2002-5-30

     On 2002 May 30 at UT02:30-02:44 C. Brook (Plymouth, UK) suspected that 
     Aristarchus crater looked dimmer than normal. The ALPO/BAA weight=1.

2018-Jul-31 UT 02:10-02:27 Ill=91% Aristarchus observed by Foley_PW on 1975-11-21 *

     Aristarchus 1975 Nov 18-19 UT 23:30-00:30? Observed by Foley (Kent, 
     England, 12" reflector) "Deep blue-viol. spot in NW (IAU ?) interior 
     corner. (seen occasionally with obscur. but dates not given)." NASA 
     catalog weight=3 (average). NASA catalog ID #1421."