Circular No. 7821

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 2002at IN NGC 3720

B. Swift and W. D. Li, University of California at Berkeley, report the LOTOSS (cf. IAUC 7514) discovery of an apparent supernova (mag about 17.8) on unfiltered CCD images taken with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) on Feb. 5.4 and 6.4 UT. SN 2002at is located at R.A. = 11h32m21s.95, Decl. = +0 48'08".8 (equinox 2000.0), which is 4".8 east and 6".0 south of the nucleus of NGC 3720. A KAIT image taken on 2001 May 6.2 showed nothing at this position (limiting mag about 19.0).

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Host galaxy info: Vel = 5985 km/s, 1.0 x 0.9, 13.71, SAa:

SN type info: II?

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