------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2611 2009 Dec 31 18.52UT 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 ------------------------------------------------------------------- (2131) MAYALL B. Warner, Palmer Divide Observatory and others report on CBET 2105 that photometric observations obtained during 2009 Nov. 30-Dec. 16 reveal that minor planet (2131) is a binary system with an orbital period of 23.48 +/- 0.01 hr. The primary shows a period of 2.5678hr and has a light curve amplitude of 0.09 mag, suggesting a nearly spheroidal shape. The secondary rotates synchronously with the orbital motion, and its light curve component has an amplitude of 0.05 mag. Observations in 2005 (Warner 2005, Minor Planet Bull. 32, 54-58) and 2007 (Warner et al. 2007, Minor Planet Bull. 34, 23) showed no indications of (2131) being binary. SUPERNOVA 2009lh IN ANONYMOUS GALAXY Discovery by the CHASE Project of a possible supernova (CBET 2024): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009lh Nov 16.27 09 53 22.52 -18 38 26.1 17.7: 1.3"W, 3.6"N The host galaxy is located to the east of NGC 3045. SUPERNOVA 2009li IN IC 1549 Discovery by LOSS of a possible supernova (CBET 2026): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009li Nov 16.23 00 22 51.40 +06 58 11.8 18.0 23.3"E,20.1"N SUPERNOVA 2009lj IN NGC 1233 Discovery by LOSS of a possible supernova (CBET 2027): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009lj Nov 13.44 03 12 32.49 +39 18 42.0 19.0 6.3"W,26.0"S SUPERNOVA 2009lk IN ANONYMOUS GALAXY Discovery by the CHASE Project of a possible supernova (CBET 2024): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009lk Nov 17.13 01 57 08.66 +04 05 07.3 17.8 2.6"W, 8.6"N SUPERNOVA 2009lm IN NGC 2980 Discovery by LOSS of a possible supernova (CBET 2032): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009lm Nov 17.52 09 43 12.07 -09 36 19.9 18.5 0.8"E,25.4"N J. Brimacombe, Australia, confirmed it at mag around 18.5 in a co-added image (limiting mag 20.0) from four 600-s unfiltered images taken remotely with a 0.5-m telescope located near Mayhill SUPERNOVA 2009ln IN ANONYMOUS GALAXY Discovery by T. Kryachko et. al. of a possible supernova (CBET 2035): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009ln Nov 18.73 03 07 56.50 +16 21 45.5 18.2 7.8"W, 2.5"S The discovery image has been posted at the following website URL: http://www.makhaon.com/_files/suspect.jpg SUPERNOVA 2009lo IN UGC 717 Discovery by LOSS of a possible supernova (CBET 2036): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009lo Nov 20.23 01 09 21.48 +14 20 22.8 18.2 6.6"W, 9.1"S Guy M Hurst