SN2001ex – discovery

Tom Boles

SN2001ex in UGC 3595, discovered 2001 October 16. IAU Circular 7735 : G.M. Hurst, Basingstoke, England, reports the discovery of an apparent supernova (mag. 17.2) by T. Boles, Coddenham, England, on a 60-s unfiltered CCD frame (limiting mag. 18.5) taken with a 0.36-m telescope on Oct. 16.195 UT in the course of the UK Nova/Supernova Patrol. Boles obtained a confirming image on Oct. 17.096, which shows SN2001ex at mag. 17.1. The new object is located at RA 6h 55m 59s.89, Dec +55º 24' 03".0 (equinox 2000.0; average from measures of the two images), which is 5" west of the nucleus of its host galaxy. A frame taken by Boles on Sept. 16.075 shows nothing at this position (limiting mag. 18.5). Palomar Schmidt blue and red images from 1993 and 1989 also show nothing at this location.