Electronic Telegram No. 2932
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 2011ip = PSN J01134759-1241060
     Denis V. Denisenko, Space Research Institute, Moscow, reports his
discovery of an apparent supernova (magnitude 17.8) on 18 unfiltered images
taken of comet 182P on Nov. 20.73-20.79 UT remotely by V. Gerke and A.
Novichonok (not by S. Korotkiy, as reported on the TOCP) with a 0.40-m f/8
Djigit reflector (+ STL-11000M camera) at Ka-Dar observatory's TAU station
(Nizhniy Arkhyz, Karachay-Cherkessia, Russia).  The new object is located at
R.A. = 1h13m47s.59, Decl. = -12d41'06".0 (equinox 2000.0; average of six
measurements), which is 1" north of the presumed host galaxy (which itself
has position end figures 47s.63, 06".8).  Nothing is visible at this position
on eleven Digitized Sky Survey (DSS) plates (no dates or limiting magnitudes
provided).  A comparison of the TAU/Ka-Dar image and a red DSS plate is
posted at website URL http://pics.livejournal.com/bigdenru/pic/000azkkg/,
with a larger-scale animation against a color-combined DSS image posted at
http://pics.livejournal.com/bigdenru/pic/000b15gb/.  The variable was
designated PSN J01134759-1241060 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2011ip based on the spectroscopic
confirmation reported below.

     L. Tomasella, A. Pastorello, S. Valenti, and S. Benetti, Istituto
Nazionale di Astrofisica, Osservatorio Astronomico di Padova, on behalf of a
larger collaboration, report that a spectrogram of PSN J01134759-1241060 =
SN 2011ip, obtained on Nov. 27.88 UT with the Asiago 1.82-m Copernico Telescope
(+ AFOSC; range 350-820 nm, resolution 2.4 nm), shows it to be a type-Ic
supernova.  The best fit to this spectrum found by GELATO (Harutyunyan et al.
2008, A.Ap. 488, 383; available at URL https://gelato.tng.iac.es/login.cgi)
suggests that 2011ip is type-Ic supernova at maximum light if a redshift of
about 0.049 is assumed.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 December 3                  (CBET 2932)              Daniel W. E. Green