Circular No. 7073

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 1998fa IN UGC 3513

W. D. Li, E. Halderson, M. Modjaz, T. Shefler, J.Y. King, M. Papenkova, R. R. Treffers and A. V. Filippenko, University of California at Berkeley, report their discovery of an apparent supernova in UGC 3513 during the course of the Lick Observatory Supernova Search (cf. IAUC 6627) with the 0.8-m Katzman Automatic Imaging Telescope (KAIT). The supernova was discovered and confirmed on unfiltered observations taken on Dec. 25.4 (mag about 18.2) and 26.2 UT (mag about 18.0). The new object is located at R.A. = 6h42m51s.51, Decl. = +41d25'18".9 (equinox 2000.0), which is about 4".0 west and 3".8 north of the nucleus of UGC 3513. Inspection of a KAIT image of the same field on Dec. 22.4 showed that the supernova was present with an unfiltered mag of 18.7. A KAIT image on Dec. 18.3 (limiting magnitude about 19.0) showed nothing at the position of the supernova.

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Host galaxy info: V = 7358 km/s, 1.0'x0.4', Scd:

SN type info: SN IIb

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