Circular No. 7480

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 2000dg IN MCG +1-1-29

C. Yu and W. D. Li, University of California at Berkeley, on behalf of the Lick Observatory Supernova Search (cf. IAUC 6627, 7126), report the discovery with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) of an apparent supernova (mag about 17.8) on an unfiltered image taken on Aug. 22.5 UT, with confirmation coming from an earlier image taken on Aug. 20.5 (mag about 18.5). SN 2000dg is located at R.A. = 0h6m13s.81, Decl. = +8 53'17".5 (equinox 2000.0), which is 7".1 west and 0".8 south of the nucleus of MCG +1-1-29. A KAIT image of the same field taken on Aug. 11.4 showed nothing at the position of the new object (limiting mag about 19.0).

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Host galaxy info: V = 11542 km/s; 1.1' x 0.4'; 15.40; S?

SN type info: Ia

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