Circular No. 7509

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVA 2000du IN UGC 3920

Y. Sato and W. D. Li, University of California at Berkeley, on behalf of the Lick Observatory Supernova Search (cf. IAUC 6627, 7126), 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 (equinox 2000.0), which is 14".5 east and 1".5 south of the nucleus of UGC 3920. A KAIT image of the same field taken on Apr. 5.1 showed nothing at the position of SN 2000du (limiting mag about 19.0).

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Host galaxy info: V = 8520 km/s; 1.3' x 1.3'; 14.0; SABb

SN type info: II

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