SN2001dw – discovery

Tom Boles

SN2001dw in NGC 1168, discovered 2001 August 25. IAU Circular 7691 : G.M. Hurst, Basingstoke, England, reports the discovery of an apparent supernova (mag. 16.6) by T. Boles, Coddenham, England, on unfiltered CCD images obtained on Aug. 25.125 (limiting mag. 19) and 25.989 UT (poor conditions) with a 0.36-m Schmidt–Cassegrain telescope for the UK Nova/Supernova Patrol. The new object is located at RA 3h 00m 47s.88, Dec +11º 46' 27".5 (equinox 2000.0), which is 13" west and 9".5 south of the center of NGC 1168. A confirming image obtained by A. Oksanen, Nyrola Observatory, Finland, on Aug. 26.025 with a 0.36-m Schmidt–Cassegrain telescope yields the following position end figures for SN2001dw: 47s.84, 26".7. The new object was absent from a master image taken by Boles on 1999 Nov. 2, and it does not appear on second Palomar Sky Survey images from 1990 (blue) and 1991 (red).