Circular No. 7781

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 2001ir IN MCG -02-22-22

W. D. Li, University of California at Berkeley, reports the discovery by LOTOSS (cf. IAUC 7514) of an apparent supernova (mag about 17.5) in an unfiltered image taken with the Katzman Automatic Imaging Telescope (KAIT) on Dec. 19.5 UT. The new object is confirmed on an earlier KAIT image taken on Dec. 10.5 under poor conditions. SN 2001ir is located at R.A. = 8h36m28s.12, Decl. = -11o50'03".5 (equinox 2000.0), which is 24".0 west and 11".9 south of the nucleus of MCG -02-22-22. An image taken by M. Schwartz with the Tenagra III 0.5-m telescope on Nov. 12.5 showed nothing at this position (limiting mag about 18.5).

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Host galaxy info: vel = 5900 km/s, 2.02 x 0.17, 15, Scd

SN type info: IIn

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