Electronic Telegram No. 2850
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 2011gp IN UGC 3119 = PSN J04390804+1131516
     S. Howerton, Arkansas City, KS, U.S.A.; A. J. Drake, S. G. Djorgovski,
A. Mahabal, M. J. Graham, 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 public images from the Mount
Lemmon Survey:

 SN       2011 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2011gp   Sep. 30.45   4 39 08.04  +11 31 51.6   18.4    5".1 E, 1".7 N

This variable was designated PSN J04390804+1131516 when it was posted on
the Central Bureau's TOCP webpage and is here designated SN 2011?? based
on the spectroscopic report below.

     S. Valenti, E. Cappellaro, S. Benetti, Osservatorio Astronomico di
Padova, Istituto Nazionale di Astrofisica (INAF); M. Turatto, Osservatorio
Astronomico di Trieste, INAF; and A. Pastorello, Dipartimento di Astronomia,
Universita di Padova, on behalf of a larger collaboration, report that a
spectrogram (range 360-810 nm; resolution 2.2 nm) of PSN J04390804+1131516
= SN 2011gp, obtained on Sept. 30.95 UT with the Ekar-Copernico 1.82-m
telescope (+ AFOSC), shows a red continuum, strong H_alpha emission, Na I D,
and other lines typical of type-II supernovae.  Cross-correlation with a
library of supernova spectra via the "Supernova Identification" code (SNID;
Blondin and Tonry 2007, Ap.J. 666, 1024), suggests that 2011gp is a couple
of months after maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 October 1                   (CBET 2850)              Daniel W. E. Green