Electronic Telegram No. 3141
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 2012cr IN NGC 4626 = PSN J12422445-0702576
     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; R. H. McNaught, Australian National University; 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 Catalina Sky Survey (CSS).

 SN       2012 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2012cr   May 25.15   12 42 24.45  - 7 02 57.6   18.3    12".7 W, 18".2 S

The variable was designated PSN J12422445-0702576 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2012cr based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2012cr:  Mar. 30.33 UT, [19.5 (CSS); May 25.920, 17.5 (Giancarlo Cortini,
Predappio, Italy; Celestron C14 reflector + SXVR-H9 camera); 27.258, 17.5
(Joseph Brimacombe, Cairns, Australia; luminance filter; position end figures
24s.52, 57".6).  Brimacombe's image is posted at the following website URL:
http://www.flickr.com/photos/43846774@N02/7290971272/.

     Y. Cao, California Institute of Technology; M. M. Kasliwal, Carnegie
Institute for Science and Princeton University; and C. J. White, Princeton
University, report spectroscopic follow-up of PSN J12422445-0702576 = 2012cr
on May 30.14 UT with the Dual Imaging Spectrograph mounted on the ARC 3.5-m
telescope at the Apache Point Observatory.  Broad H_alpha emission resembles
that seen in normal type-II supernovae at about several days after maximum
brightness.  The H_alpha has a FWHM of about 18000 km/s.  Narrow H_alpha,
nitrogen, and sulfur lines suggest a redshift of about 0.009, consistent with
the redshift of its host galaxy, NGC 4626.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2012 CBAT
2012 June 14                     (CBET 3141)              Daniel W. E. Green