Electronic Telegram No. 151
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVA 2005ca
     Further to IAUC 8513, M. SubbaRao, University of Chicago
and Adler Planetarium, on behalf of the SDSS Collaboration, reports
the discovery of a supernova in spectra taken on May 12.19 UT
(as described on IAUC 8302 and 8359).  SN 2005ca is located at R.A.
= 13h32m38s.59, Decl. = +11o48'33".2 (equinox 2000.0), which is
coincident with the center of the host galaxy whose redshift is
z = 0.150.  The new object appears to be a type-Ia supernova
with an approximate age of 8 +/- 5 days after maximum light, and
its estimated magnitude is r = 20.9 +/- 0.2 (the host galaxy has
apparent mag r = 17.85 from an image taken prior to the supernova
event on 2003 Mar. 31).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the formal IAU Circulars.

                         (C) Copyright 2005 CBAT
2005 May 13                      (CBET 151)               Daniel W. E. Green