Electronic Telegram No. 2143
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT@CFA.HARVARD.EDU (science)
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SUPERNOVA 2010O IN IC 356
     A. Dimai and F. Martinelli, on behalf of the CROSS program (cf. IAUC
7373), report their discovery of an apparent supernova (mag about 15.8) on
two unfiltered CCD images (limiting magnitude about 19.5) taken on Jan.
23.87 UT with a Celestron 35.6-cm f/11 telescope at the Martinelli
Observatory near Pisa, Italy.  The new object, which was confirmed at mag
about 15.5 on images (limiting mag about 18.5) taken on Jan. 24.75, is
located at R.A. = 4h07m47s.27, Decl. = +69o48'47".0 (equinox 2000.0), which
is 2".6 east and 1".3 north of the nucleus of the galaxy IC 356.  A CROSS
image of the same field taken on 2009 Nov. 24 showed nothing at this position
(limiting mag about 19.0), and it does not appear on Palomar Sky Survey
infrared, red, and blue plates.  The discovery image has been posted at
website URL http://www.cortinastelle.it/IC0356_20100123.jpg.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2010 CBAT
2010 January 24                  (CBET 2143)              Daniel W. E. Green