Circular No. 7658

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 2001da IN NGC 7780

C. Yu and W. D. Li, University of California at Berkeley, report the discovery by LOTOSS (cf. IAUC 7514) of an apparent supernova in unfiltered images taken with the Katzman Automatic Imaging Telescope (KAIT) on July 9.5 (mag about 16.5) and 10.5 UT (mag about 16.3). SN 2001da is located at R.A. = 23h53m32s.78, Decl. = +8 07'02".6 (equinox 2000.0), which is 8".7 east and 2".7 south of the nucleus of NGC 7780. A KAIT image of the same field taken on 2000 Dec. 31.3 showed nothing at this position (limiting mag about 19.0).

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Host galaxy info: Vel = 5155 km/s, 1.0' x 0.5', 14.8, Sab

SN type info: Ia

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