Circular No. 7045

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 1998en IN UGC 3645

W. D. Li, M. Modjaz, E. Halderson, T. Shefler, J. Y. King, M. Papenkova, R. R. Treffers, and A. V. Filippenko, University of California at Berkeley, report the discovery of an apparent supernova in the course of the Lick Observatory Supernova Search with the 0.8-m Katzman Automatic Imaging Telescope (KAIT). SN 1998en was discovered on unfiltered frames taken on Oct. 30.5 (mag about 18.4) and 31.5 UT (mag about 18.2). The new object is located at R.A. = 7h04m00s.05, Decl. = +50o40'30".0 (equinox 2000.0), which is about 10".4 west and 18".3 south of the nucleus of UGC 3645. KAIT images of the same field on Oct. 26.5 (limiting mag about 18.5) and Oct. 21.5 (limiting mag about 19.0) showed nothing at the position of the supernova.

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Host galaxy info: V = 6385 km/s, 1.7'x0.2', Sbc

SN type info: SN II

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