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THE ASTRONOMER Electronic Circular No 2660      2010 Jly 20 19.59UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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SUPERNOVA 2010gm IN MCG +07-36-25
On 2011 July 19, Tom Boles, Coddenham, England, reported his discovery 
of a possible magnitude 17.9 supernova in MCG +07-36-025 during the 
course of searches for the UK Nova/Supernova Patrol. The discovery was 
made on unfiltered images of July 19.015UT using a 0.35-m 
Schmidt-Cassegrain telescope. The object is located at:
RA 17h 33m 20.87s DEC +44 06' 16.4" (2000)
which is approximately 2.0" W and 5.8"S of the host galaxy's nucleus.

Nothing is present at this position on Tom's images of 2010 Mar 7 and 
May 10 (limiting mag 19.5) or on Digitised Sky Survey Plates from 1992 
June 1 (limiting red mag 20.5), and 1990 April 2 (limiting blue mag 
21.0).

In a further e-mail of today (July 20) Tom advises us that
Joe Brimacombe of Cairns, Australia has succeeded in obtaining 
confirmation images of the apparent supernova in MCG+07-36-25 using a 
remote 0.50-m reflector + CCD based in Mayhill. End figures for night 
two are 20.85s and 16.1". The mag is similar on both nights.

The object has been designated supernova 2010gm and announced on CBET 
2383. Congratulations to Tom on the discovery of his 132nd supernova.

Guy M Hurst