------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2715 2011 Feb 25 19.45UT 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 ------------------------------------------------------------------- TRANSIENT OBJECTS CONFIRMATION PAGE A replacement page set up by the Central Bureau for potential discoveries can be found at: http://www.cbat.eps.harvard.edu/unconf/tocp.xml Registered users with CBAT can post details of discoveries there pending confirmation but all can access. With regard to supernovae, it is now necessary that such discoveries should be spectroscopically confirmed before the formal designation is assigned. (CBET 2629) SUPERNOVA 2011D IN UGC 2498 (LOSS/CRTS) 2011D Jan 5.09 03 02 14.58 +17 20 58.9 18.2 33.8"E 14.7"N 2011D Jan 6.30 03 02 14.53 +17 20 58.3 18.2 34.4"E, 14.8"N Independent discoveries from LOSS and later reported from CRTS. G. H. Marion and P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group, report that a spectrum obtained on Jan. 8 UT by P. Berlind with the F. L. Whipple Observatory 1.5-m telescope shows it is a type-IIb supernova a few days before maximum light. SUPERNOVA 2011E IN MCG -01-2-14 (LOSS) 2011E Jan 7.08 00 26 19.23 -04 29 42.4 15.8 28.1"E, 11.2"S G. H. Marion also reports a spectrum of Jan 9 shows type-II then near maximum light. SUPERNOVA 2011F IN UGC 7799 (LOSS) 2011F Jan 7.60 12 37 57.35 +34 01 09.0 18.7 20.1"E, 10.2"S G. Narayan and R. Kirshner, Harvard-Smithsonian Center for Astrophysics, report that a spectrum of Jan. 10UT shows that it is a type-II supernova, about 10 days past maximum. SUPERNOVA 2011G IN UGC 7144 (LOSS) 2011G Jan 8.58 12 09 41.81 +56 31 11.4 19.3 28.3"W, 13.0"S G. Narayan also reports a spectrum of Jan 10 indicates type-Ia about 40 days past maximum light. SUPERNOVA 2011H NEAR UGC 1837 (LOSS) 2011H Jan 4.26 02 23 06.02 +43 02 32.4 15.6 83.1"E, 109.6"N L. Lopez et. al., University of California, San Diego, obtained a spectrum on Jan. 9 UT indicating type-Ia supernova somewhat past maximum light. UGC 1837 resides in a galaxy group so 2011H could be an intracluster supernova. Guy M Hurst