------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2639 2010 Apr 23 13.45UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK Backup: gmh@wdcc1.bnsc.rl.ac.uk WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- COMET P/2010 H2 P.Balanutsa et. al., Kislovodsk solar station of the Pulkovo observatory RAS and others report on 'The Astronomer's Telegram 2578' detection of pre-discovery images of Comet P/2010 H2 (cf TA E-Circular 2638). The two pre-discovery images are in the database of two MASTER robotic telescopes. The field of Comet P/2010 H2 has been twice covered by their telescopes in Blagoveschensk (Russia) and Kislovodsk (Caucasus, Russia). The Catalina Sky Survey (R. A. Kowalski, CBET #2249) also have pre-discovery image of the bright comet. Results are presented in the table below: Time UT Mag Coord Observatory 2010-04-15.40 V>20m - Catalina Sky Survey 2010-04-15.63 M>16m - MASTER-Blagoveschensk 2010-04-15.82 V=13.7 13 39 33.68 +04 45 41.4 ĀSTER-Kislovodsk 2010 04 16.01 M=12.6 13 39 25.17 +04 45 49.5 Vales, CBET #2249 SUPERNOVA 2010ac IN IC 4352 Discovery by THE CHASE Project of a possible supernova (CBET 2174): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ac Feb 13.31 13 58 24.35 -34 30 55.4 16.6 9.5"W, 6.6"N SUPERNOVA 2010ad IN UGC 10143 Discovery by LOSS of a possible supernova (CBET 2177): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ad Feb. 18.57 16 02 13.56 +15 56 18.8 16.0 5.2"E, 3.8"N J. M. Silverman reports a CCD spectrum of Feb. 19 with the 3-m Shane reflector (+ Kast) at Lick Observatory, shows that 2010ad is a supernova, probably of type II then about a week past maximum. SUPERNOVA 2010ae IN ESO 162-17 Discovery by THE CHASE Project of a possible supernova (CBET 2184): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ae Feb 22.06 07 15 54.65 -57 20 36.9 15.9 0.6"E, 0.2"S Reddened peculiar type-Ia event according to M. Stritzinger. SUPERNOVA 2010ag IN UGC 10679 Discovery by L. Cox and T. Puckett of a possible supernova (CBET 2195): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ag Mar 5.43 17 03 53.63 +31 30 06.2 16.5 7.9"E, 8.9"N SUPERNOVA 2010ah IN SDSS J114402.98+554122.5 Discovery by Palomar Transient Factory of a possible supernova (CBET 2198): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ah Feb 23.50 11 44 02.99 +55 41 27.6 18.8 5.2" pa 7deg SUPERNOVA 2010ai IN ANONYMOUS GALAXY Discovery by Koichi Itagaki of a possible supernova (CBET 2200): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ai Mar 11.75 12 59 24.03 +27 59 47.1 16.9 12 "W, 1 "S Guy M Hurst