Electronic Telegram No. 2989
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2012L
     A. J. Drake, S. G. Djorgovski, M. J. Graham, A. Mahabal, and R. Williams,
California Institute of Technology; J. L. Prieto, Princeton University; M.
Catelan, Pontificia Universidad Catolica de Chile; E. C. Beshore and S. M.
Larson, Lunar and Planetary Laboratory, University of Arizona; and E.
Christensen, Gemini Observatory, report the discovery of an apparent
supernova in unfiltered Catalina Sky Survey (CSS) images:

 SN       2012 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2012L    Jan. 13.46   7 59 00.47  +27 09 57.1   18.7    8".4 W, 13".7 N

Further CSS magnitudes for 2012L:  2011 Dec. 24.24 UT, [20.4; 2012 Jan. 4.35,
19.4; Jan. 20.22, 19.3.

     M. Dennefeld, Institut d'Astrophysique de Paris; J. Whitbourne,
University of Durham; and S. Benetti, Istituto Nazionale di Astrofisica,
report that a spectrum (range 370-730 nm; resolution 0.66 nm) of 2012L was
obtained on Jan. 19.92 UT with the Haute-Provence 1.93-m telescope (+ Carelec).
Using a library of supernova spectra via GELATO (Harutyunyan et al. 2008,
A.Ap. 488, 383; https://gelato.tng.iac.es/login.cgi), they found a best fit
with normal type-Ia supernova about 10 days after maximum, if a redshift of
about 0.075 is assumed for the parent galaxy.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2012 CBAT
2012 January 21                  (CBET 2989)              Daniel W. E. Green