------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2525 2009 Feb 14 16.47UT 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/2007 N3 (LULIN) M. D. Hicks and K. J. Lawrence, Jet Propulsion Laboratory; and J. M. Somers, Moorpark College, report on IAUC 9019 that Bessel-R observations of C/2007 N3, obtained at the Palomar Hale 5-m telescope on 2009 Feb.2.58 UT, yield magnitude R = 7.27 +/- 0.02 in a 4'-diameter photometric aperture. This corresponds to an Af(rho) value (cf. IAUC 7342) of 16.6 +/- 0.9 m, which is approximately 0.1 that of post-perihelion measurements of comet 1P/Halley obtained at a similar heliocentric distance (Schleicher et al. 1998, Icarus 132, 397). Editor: Charts, kindly provided by Reinder Bouma of The Netherlands, are available at the following site by selecting 'comets-charts': http://www.shopplaza.nl/astro/ SUPERNOVA 2009R IN ANONYMOUS GALAXY Discovery by Catalina Sky Survey of a possible supernova (CBET 1676): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009R Jan 2.46 11 51 10.62 +24 40 22.5 19.2 The apparent host galaxy of 2009R resides in a cluster of galaxies at redshift fit z = 0.13 SUPERNOVA 2009S IN ANONYMOUS GALAXY Discovery by Catalina Sky Survey of a possible supernova (CBET 1676): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009S Jan 26.22 09 32 30.11 +17 41 19.8 17.7 17.5"W,13.0"S The apparent host galaxy of 2009S, 2MASX J09323134+1741326, has redshift z = 0.049 SUPERNOVA 2009T IN ANONYMOUS GALAXY Discovery by Catalina Sky Survey of a possible supernova (CBET 1676): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009T Jan 30.51 13 51 21.72 +14 08 37.6 16.7 2 "N P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA) reports that a spectrum of Feb. 2 UT by E. Falco with the F. L. Whipple Observatory 1.5-m telescope, shows it to be a type-Ia supernova, 30-40 days past maximum brightness. SUPERNOVA 2009U IN NGC 3831 Discovery by the CHASE Project of a possible supernova (CBET 1679): SN 2009 UT R.A. (2000.0) Decl. Mag. Offset 2009U Feb 2.18 11 43 18.72 -12 52 46.1 15.8 2.0"E, 4.3"S Guy M Hurst