Circular No. 7579

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 2001R IN NGC 5172

D. Weisz, 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 18.5) on unfiltered images taken with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) on Jan. 6.5, Feb. 3.5, and 4.5 UT. SN 2001R is located at R.A. = 13h29m16s.93, Decl. = +17o02'41".2 (equinox 2000.0), which is 33".2 west and 25".0 south of the nucleus of NGC 5172. A KAIT image taken on 2000 June 20.2 showed nothing at this position (limiting mag about 19.0). SN 1998cc also occurred in NGC 5172.

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Host galaxy info: V = 4030 km/s, 3.3'x1.7', 12.63, SAB(rs)bc:

SN type info: II

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