Electronic Telegram No. 3007
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 2012U IN PGC 8012 = PSN J02060433-5511375
     [Editor's note:  The discovery date was erroneously given as Dec. 20
(instead of Jan. 20) on CBET 3006; the designation is therefore changed to
SN 2012U, and the designation 2011kc will be re-used.]
     Greg Bock, Windaroo, Queensland, Australia, reports the discovery by
Peter Marples (Loganhomle, Queensland) of an apparent supernova (mag 14.9)
on unfiltered CCD images taken on Jan. 20.45 and 20.466 UT with a 30-cm Meade
f/7 LX200R reflector (+ Starlight Xpress camera; limiting mag 18.5).  The new
object is located at R.A. = 2h06m04s.33, Decl. = -55d11'37".5 (equinox 2000.0),
which is 8" east and 2" south of the nucleus of the galaxy PGC 8012
(measurements by Bock).  Nothing is visible at this position on Digitized Sky
Survey red, blue, or infrared plates (limiting red magnitude > 19).  The
variable was designated PSN J02060433-5511375 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2012U based on the
spectroscopic confirmation reported below.

     J. Anderson and Thomas de Jaeger, Universidad de Chile; and Joaquim
Palacio, Universitat Autonoma de Barcelona, on behalf of the Millennium Center
for Supernova Science, report on optical spectroscopy (range 380-900 nm) of
PSN J02060433-5511375 = SN 2012U that was obtained on Jan. 21.2 UT with the
Magellan II Clay 6.5-m telescope (+ LDSS3) at Las Campanas Observatory.
Cross-correlation with a library of supernova spectra using the "Supernova
Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) gives
best matches with type-Ia supernovae around maximum light.  Using the
host-galaxy recession velocity from NED of 9549 km/s, the velocity of the
Si II 635.5-nm feature is estimated to be approximately 10000 km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2012 CBAT
2012 January 31                  (CBET 3007)              Daniel W. E. Green