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THE ASTRONOMER Electronic Circular No 2419      2008 Feb 09 06.58UT
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 2008X IN NGC 4141
On 2008 February 7, Tom Boles, Coddenham, England, advised us of his 
discovery of an apparent supernova (mag 17.6) on an unfiltered CCD image 
taken on Feb 07.005 with a 0.35-m Schmidt-Cassegrain telescope during 
searches for the UK Nova/Supernova Patrol.

The new object is located at:
RA 12h 09m 48.33s DEC +58 51' 01.6" (2000), which is approximately 7.6"E 
and 4.6"N of the centre of NGC 4141. The suspect is not present on Tom's 
images from 2007 May 29 and 2007 Mar 11 (limiting mag 19.5) and it is 
not present on DSS II red (1993-05-11 limiting mag 20.5), blue plates 
(1994-01-16 limiting mag 21.0).

In a further message Tom reported that he had succeeded in getting 
confirmation images of the possible supernova in images of Feb 7.937UT 
deriving end figures 48.31s and 01.4" and a similar magnitude to 
discovery night.

On CBET 1239, the object was designated supernova 2008X and an 
independent discovery of 2008X (at mag 17.9) has been reported
by D. Madison, W. Li, and A. V. Filippenko, University of California at 
Berkeley, on an unfiltered KAIT image taken on Feb. 7.52 in the course 
of the Lick Observatory Supernova Search. They provide position end 
figures 48.30a, 01.2a (offset 7.8"E, 4.3"N),
adding that nothing is present on their archival image from 2007 June 
24.23 (limiting mag 19.0).

Congratulations to Tom on the discovery of his 109th supernova.

Guy M Hurst