Circular No. 7607

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 2001ak UGC 11188

M. Schwartz, Cottage Grove, OR; and W. D. Li, University of California at Berkeley, on behalf of LOTOSS (cf. IAUC 7514), report the discovery of an apparent supernova on unfiltered images taken with the 0.5-m Tenagra III automated telescope on Apr. 1.5 (mag about 18.4) and 3.5 UT (mag about 18.1). SN 2001ak is located at R.A. = 18h17m31s.44, Decl. = +18o54'00".8 (equinox 2000.0), which is about 24" east and 12" south of the diffuse nucleus of UGC 11188. An image taken by the Katzman Automatic Imaging Telescope on 2000 Oct. 8.3 showed nothing at this position (limiting mag about 19.0).

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Host galaxy info: V = 5285 km/s, 1.3'x0.2', 15.8, Sd

SN type info: II

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