[IAUC] CBET 2365: 20100712 : SUPERNOVA 2010gb IN UGC 9947

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                                                  Electronic Telegram No. 2365
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 en iau.org; cbatiau en eps.harvard.edu
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2010gb IN UGC 9947
     T. Boles, Coddenham, England, reports the discovery of an apparent
supernova (mag 16.5) on unfiltered CCD images taken on June 11.005 and 11.925
UT with a 0.35-m reflector.  The new object is located at R.A. = 15h38m39s.79,
Decl. = +41o00'19".9 (equinox 2000.0), which is approximately 8".0 west and
1".8 north of the center of UGC 9947.  Nothing is present at this position on
Boles' images from 2010 Feb. 19 and Apr. 21 (limiting mag 19.5) or on
Digitized Sky Survey plates from 1993 Apr. 17 (limiting red mag 20.5) and
1990 Mar. 31 (limiting blue mag 21.0).
     After posting on the Central Bureau's unconfirmed-objects webpage, F.
Ciabattari, S. Donati, E. Mazzoni, and M. Rossi, Borgo a Mozzano, Italy,
report their independent discovery of 2010gb on unfiltered CCD images obtained
on July 10.89 (limiting mag 18.5) and July 11.87-11.90 UT (limiting mag 18.7)
with a 0.5-m Newtonian reflector, noting mag 15.8 on July 10.89 and mag 16.2
on July 11; they measured position end figures 39s.80, 20".1, and add that
nothing is visible at this position on DSS plates from the Palomar Sky Survey
on 1993 Apr. 17 (F plate, limiting mag 20.3) and 1990 Mar. 31 (J plate,
limiting mag 20.3).


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                         (C) Copyright 2010 CBAT
2010 July 12                     (CBET 2365)              Daniel W. E. Green