Electronic Telegram No. 2194
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Room 209; Dept. of Earth and Planetary
 Sciences; Harvard University; 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbat@iau.org; cbatiau@eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2010af IN NGC 3172
     T. Boles, Coddenham, England, reports the discovery of an apparent
supernova on unfiltered CCD images taken on Mar. 4.808 (at mag 17.2) and
6.013 UT (mag 17.1) with a 0.35-m reflector.  The new object is located at
R.A. = 11h39m19s.3, Decl. = +89o06'05".7 (equinox 2000.0; average of
measurements of images from both night), which is approximately 112" west and
31" north of the center of NGC 3172.  Nothing is present at this position on
Boles' images from 2009 Jan. 11 and 2007 Mar. 11 (limiting mag 19.5) or on
Digitized Sky Survey plates from 1998 Apr. 21 (limiting red mag 20.5) and
1998 Jan. 27 (limiting blue mag 21.0).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 March 5                     (CBET 2194)              Daniel W. E. Green