Circular No. 7406

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 2000bs IN UGC 10710

M. Papenkova and W. D. Li, University of California at Berkeley, on behalf of the Lick Observatory Supernova Search (cf. IAUC 6627, 7126), report the discovery of an apparent supernova (mag about 17.7) on unfiltered images taken on Apr. 19.5 and 20.3 UT with the 0.8-m Katzman Automatic Imaging Telescope (KAIT). SN 2000bs is located at R.A. = 17h06m54s.67, Decl. = +43o06'41".7 (equinox 2000.0), which is 23".9 east and 38".0 south of the nucleus of UGC 10710. An unfiltered image taken on Apr. 8.5 showed nothing at the position of the new object (limiting mag about 19.0).

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Host galaxy info: V = 8387 km/s, Sb, 1.5' x 0.4', mag 15.03

SN type info: II

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