Electronic Telegram No. 143 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html SUPERNOVA 2005bs Further to IAUC 8516, L. A. G. Monard reports his discovery of an apparent supernova (mag about 17.4 +/- 0.3) on unfiltered CCD images taken on Apr. 19.066 UT and confirmed on Apr. 20.014 (at mag about 17.5 +/- 0.3). SN 2005bs is located at R.A. = 20h10m14s.11, Decl. = -56o38'43".6 (equinox 2000.0), which is 4" west and 15" south of the nucleus of the apparent host galaxy (which itself is in the cluster Abell 3667). Nothing is visible at this location on an image from the Digitized Sky Survey (limiting red mag 20.5) or on an image taken on Mar. 24.090 by Monard (limiting red mag 18.5). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the formal IAU Circulars. (C) Copyright 2005 CBAT 2005 April 20 (CBET 143) Daniel W. E. Green