Circular No. 7643

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 2001co IN NGC 5559

A. B. Aazami and W. D. Li, University of California at Berkeley, report the discovery by LOTOSS (cf. IAUC 7514) of an apparent supernova (mag about 18.5) in unfiltered images taken with the Katzman Automatic Imaging Telescope (KAIT) on June 11.3, 12.3, and 13.3 UT. The new object is located at R.A. = 14h19m11s.80, Decl. = +24o47'42".9 (equinox 2000.0), which is 13".5 west and 12".6 south of the nucleus of NGC 5559. A KAIT image taken on May 24.3 showed nothing at this position (limiting mag about 19.0).

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Host galaxy info: Vel = 5166 km/s, 1.4' x 0.4', 14.79, SBb

SN type info: unknown

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