------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2652 2010 Jun 22 14.49UT 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 C/2009 R1 (MCNAUGHT) This comet (cf TA E-Circular 2650) is becoming quite a difficult object due to the small solar elongation though we continue to receive some excellent images of the comet showing a long tail. Observers are reminded to be extremely careful during the small solar elongation but to note the comet is passing quite near Capella which can assist with locating the object when near the horizon. Ephemeris: Date TT R. A. (2000) Decl. Delta r Elong. M1 2010 06 18 04 26.49 +48 14.0 1.139 0.558 29.3 5.7 2010 06 23 05 37.00 +46 44.8 1.171 0.480 24.0 5.2 2010 06 28 06 36.84 +42 00.7 1.231 0.424 18.8 4.7 SUPERNOVA 2010cs IN MCG +03-38-20 Discovery by LOSS of a possible supernova (CBET 2284): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010cs May 12.38 14 47 55.78 +19 03 17.7 19.6 1.5"E, 8.3"S SUPERNOVA 2010ct IN NGC 3362 Discovery by LOSS of a possible supernova (CBET 2285): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010ct May 15.20 10 44 50.02 + 6 36 05.3 19.2 26.2"W, 16.3"N The type-II supernova 2001Y (cf. IAUCs 7592, 7593) was also discovered in this galaxy. SUPERNOVAE 2010cv-2010cz Discovery by Catalina Sky Survey of a possible supernovae (CBET 2287): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010cv Apr 9.18 09 36 19.28 +29 21 01.3 18.8 -- 2010cw Apr 11.24 09 33 56.84 +38 48 35.7 17.8 1.6"E, 1.7"S 2010cx May 5.33 13 00 31.43 +41 44 44.4 18.3 1.1"W 2010cy May 13.39 14 43 42.85 +03 58 16.2 17.0 1.0"E, 3.1"N 2010cz May 15.81 22 40 56.89 -07 03 06.4 17.8 15.9"W, 16.8"N SUPERNOVA 2010da IN NGC 300 Discovery by Berto Monard of a possible supernova (CBET 2289): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010da May 23.16 00 55 04.86 -37 41 43.7 16.0 135 "E 41 "S SUPERNOVA 2010db IN PGC 1895764 Discovery by MASTER team of a possible supernova (CBET 2290): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010db May 15.92 18 26 09.27 +30 14 12.6 15.2 3.5"W, 1.5"S SUPERNOVA 2010dc IN IC 4854 Discovery by Brendan Downs, Ipswich, Queensland of a possible supernova (CBET 2291): SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010dc May 22.61 19 27 17.72 -59 18 44.9 17.2R 27 "W, 9 "N Guy M Hurst