Electronic Telegram No. 2359 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Room 209; Dept. of Earth and Planetary Sciences; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbat@iau.org; cbatiau@eps.harvard.edu URL http://www.cfa.harvard.edu/iau/cbat.html SUPERNOVA 2010fy L. A. G. Monard, Pretoria, South Africa, reports his discovery of an apparent supernova (magnitude approximately 17.7) on several unfiltered CCD images taken on July 7.163 UT at the Bronberg Observatory. The new object, which was confirmed at mag approximately 17.1 on July 9.152, is located at R.A. = 5h24m52s.46, Decl. = -46d46'37".1 (equinox 2000.0), which is 9" east and 9" north of the core of the presumed host galaxy. Nothing is visible at this position on Digitized Sky Survey images (limiting red mag 20.5) or on Monard's image of this galaxy taken on 2010 Apr. 22.719 (limiting mag 18.5) or on earlier Monard images. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2010 CBAT 2010 July 9 (CBET 2359) Daniel W. E. Green