Circular No. 7598

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 2001af IN MCG -04-24-1

M. Modjaz and W. D. Li, University of California at Berkeley, on behalf of LOTOSS (cf. IAUC 7514), report the discovery of an apparent supernova (mag about 16.8) on unfiltered CCD images taken on Mar. 18.3 and 19.3 UT with the 0.8-m Katzman Automatic Imaging Telescope (KAIT). SN 2001af is located at R.A. = 9h50m28s.70, Decl. = -21o48'30".7 (equinox 2000.0), which is 13".6 east and 22".7 south of the nucleus of MCG -04-24-1. An unfiltered KAIT image of the same field on Mar. 17.3 already showed a hint of the new object, while an image on Mar. 1.3 showed nothing at this position (limiting mag about 18.5).

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Host galaxy info: V = 8799 km/s, 1.3'x1.0', 14.05, SB(rs)c

SN type info: II

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