6 March 1999
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
G. Aldering and P. Nugent, Lawrence Berkeley National Laboratory, on behalf of the Supernova Cosmology Project (SCP), report the discovery of a supernova (unfiltered mag about 17.8) on Feb. 18 UT as part of a joint collaboration between the SCP and E. Helin, S. Pravdo, D. Rabinowitz, and K. Lawrence (Near-Earth Asteroid Tracking project, Jet Propulsion Laboratory). SN 1999am is located at R.A. = 8h24m10s.88, Decl. = +12o06'58".6 (equinox 2000.0), which is 11" west of the center of CGCG 060-009. W. Kunkel (Carnegie Observatories) and M. Phillips (Carnegie Institution of Washington) report that a spectrum of the new object taken on Mar. 3 with the 2.54-m reflector at Las Campanas shows it to be a type-Ia supernova, nearly 3 weeks after maximum light at a redshift of about 12 000 km/s.
(C) Copyright 1999 CBAT
1999 March 6 (7122) Daniel W. E. Green