Circular No. 7533

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 2000fa IN UGC 3770

A. Friedman and W. D. Li, University of California at Berkeley, on behalf of LOTOSS (cf. IAUC 7514), report the discovery with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) of an apparent supernova in UGC 3770 on an unfiltered image taken on Nov 30.5 UT (mag about 17.3). The SN was confirmed by an unfiltered image taken by M. Schwartz with the 0.5-m Tenagra III automatic telescope at magnitude about 17.0 on Dec 1.2 UT. The new object is located at R.A. = 7h15m29s.88, Decl. = +23o25'42".4 (equinox 2000.0), which is 6".6 east and 4".2 south of the nucleus of UGC 3770. KAIT images of the same field on Nov 24.5 UT (limiting magnitude about 18) and Nov 17.4 UT (limiting magnitude about 19.0) showed nothing at the position of the SN.

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Host galaxy info: V = 6378 km/s; 1.0' x 0.6'; 14.9; Im

SN type info: Ia

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