------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 1573 2000 Oct 20 12.06UT 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 GMH at AST.STAR.RL.AC.UK WORLD WIDE WEB http://www.demon.co.uk/astronomer ------------------------------------------------------------------- SUPERNOVA 2000dv IN UGC 4671 (=Q2000/291) Upon return from a seminar in London on the evening of October 19, the editor received a telephone call from Mark Armstrong that he had found a suspect near UGC 4671 on an image of Oct 17.13643UT. This was based on a single image only, the first to be obtained of this galaxy. Mark's reference to the Palomar Sky Survey and the CBAT asteroid checker failed to show a candidate. Whilst preparing to send an initial report to the editor, he noted on IAUC 7509 that the object had been discovered on KAIT images. Subsequently Dan Green mentioned Mark's independent discovery on IAUC 7510. Congratulations to Mark on this latest success. Li also reports the discovery of an apparent supernova by M. Papenkova on unfiltered KAIT images taken on Oct. 17.5 and 18.5 UT, both showing the new object at mag about 18.0. SN 2000dv is located at R.A. = 8h56m43s.40, Decl. = +52o06'13".2 (equinox 2000.0), which is 5".8 east and 6".6 south of the nucleus of UGC 4671. A KAIT image taken on Apr. 8.2 showed nothing at the position of SN 2000dv (limiting mag about 19.5). IAUC 7509 Guy M. Hurst, Basingstoke, England, reports the independent discovery of SN 2000dv (cf. IAUC 7509) by Mark Armstrong, Rolvenden, on a CCD image taken on Oct. 17.136 UT (details as given for SN 2000dt on IAUC 7508). The magnitude for SN 2000dv was then 17.5, and the following position end figures were measured by Armstrong: 43s.32, 13".3. IAUC 7510 SUPERNOVA 2000du IN UGC 3920 Y. Sato and W. D. Li, University of California at Berkeley, on behalf of the Lick Observatory Supernova Search, report the discovery with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) of an apparent supernova on unfiltered images taken on Oct. 14.5 (mag about 17.8) and 16.5 UT (mag about 17.7). The new object is located at R.A. = 7h35m19s.78, Decl. = +19o02'43".5 (2000), which is 14".5 east and 1".5 south of the nucleus of UGC 3920. IAUC 7509 (extract) Guy M Hurst