Electronic Telegram No. 2268
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 2010cm IN PGC 5597
     G. Bock, Windaroo, Queensland, Australia, reports the discovery by
Stuart Parker, Oxford, Canterbury, New Zealand, of an apparent supernova
(red mag 16.3) on a 35-s unfiltered image taken on May 3.756 UT using a
35-cm Celestron C14 f/6.3 reflector (+ ST10 CCD camera).  An image
(limiting red mag 17.8) taken by Parker on May 4.725 shows the new object at
mag 16.1.  SN 2010cm is located at R.A. = 1h30m03s.91, Decl. = -42d41'10".6
(equinox 2000.0), which is 15" west and 1" south of the nucleus of the galaxy
PGC 5597 (= ESO 244-G31); the astrometry and photometry measurements were
by Bock.  Nothing is visible at this position on Digitized Sky Survey
red and infrared images (limiting red magnitude 19 or fainter), on an
image taken by Parker on 2010 Apr. 2, or on an image taken by P. Marples
(Loganholme, Queensland) on 2009 Oct. 16 (limiting red mag 17.5).
The type-II supernovae 2005Q (IAUC 8473) and 2005me (IAUC 8647) also
appeared in this galaxy.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2010 CBAT
2010 May 5                       (CBET 2268)              Daniel W. E. Green