Circular No. 8307

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 2004av IN ESO 571-G15

Further to IAUC 8305, M. Moore and W. Li report the LOSS
discovery, on KAIT images taken on Mar. 17.35 and 18.35 UT, of an
apparent supernova (mag about 15.8) located at R.A. = 11h40m57s.84,
Decl. = -22o28'53".6 (equinox 2000.0), which is 12".6 west and
15".9 south of the nucleus of ESO 571-G15.  A KAIT image taken on
Mar. 4.32 also showed the new object at mag about 16.8, while an
image taken on Jan. 22.36 showed nothing at this position (limiting
mag about 18.0).

Host galaxy info: vel = 7057 km/s, 1.7 x 0.2, 13.61, Sb

SN type info: Ia

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