Circular No. 8507

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 2005bf IN MCG +00-27-5

L. A. G. Monard reports his discovery of an apparent supernova
(mag about 18.0 +/- 0.3) on unfiltered CCD images taken on Apr.
5.722 and 6.715 UT with the 0.30-m reflector at the Bronberg
Observatory near Pretoria, South Africa.  The new object is located
at R.A. = 10h23m56s.99, Decl. = -3o11'29".3 (equinox 2000.0), which
is 13" east and 32" south of the nucleus of MCG +00-27-5.  Nothing
is visible at this position on the Digitized Sky Survey (limiting
red mag 20.5) or on an image taken by Monard on 2005 Mar. 12.80
(limiting red mag 18.5).  Further to IAUC 8504, M. Moore and W. Li
independently report the LOSS discovery of SN 2005bf (at mag 17.8)
on an unfiltered KAIT image taken on Apr. 6.3), providing position
end figures 57s.27, 28".6 (and offset 11".7 east and 32".6 south of
the nucleus of MCG +00-27-5).  The new object was also marginally
detected (at mag about 18.8) on an earlier KAIT image taken on Mar.
30.31, while a KAIT image taken on Mar. 15.31 showed nothing at
this position (limiting mag 19.5).

Host galaxy info: vel = 5670 km/s, 1.8 x 1.1, 13.39, SB(r)b

SN type info: Icb-pec

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