Circular No. 7456

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 2000cw IN MCG +5-56-007

M. Modjaz, A. B. Aazami, and W. D. Li, University of California at Berkeley, on behalf of the Lick Observatory Supernova Search (cf. IAUC 6627, 7126), report the discovery with the KAIT of an apparent supernova on unfiltered images taken on July 14.5 (mag about 17.4) and 15.5 UT (mag about 17.2). The new object is located at R.A. = 23h47m25s.10, Decl. = +28o23'15".8 (equinox 2000.0), which is 8".4 east and 21".2 south of the nucleus of MCG +5-56-007. A KAIT image of the same field taken on July 5.5 showed nothing at the position of SN 2000cw (limiting mag about 19.0).

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Host galaxy info: V = 9034 km/s; 0.9' x 0.4'; Sbc;

SN type info: Ia

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