Electronic Telegram No. 1740 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://www.cfa.harvard.edu/iau/cbat.html SUPERNOVA 2009bu IN NGC 7408 Alessandro Dimai, Cortina d'Ampezzo, Italy, on behalf of the CROSS program (cf. IAUC 7373), reports his discovery of an apparent supernova (mag about 16.4) on two unfiltered CCD images (limiting magnitude about 19.0) taken on Mar. 25.75 UT with the remote-controlled 0.28-m "GRAS15 telescope" at Moorook, Australia; confirming images on Mar. 26.75 with this same instrument and with the "Skylive 6" 0.35-m remote-controlled telescope located at Grove Creek, Australia, show 2009bu at mag about 16.1. The new object is located at R.A. = 22h56m01s.40, Decl. = -63o41'39".6 (equinox 2000.0), which is about 18" east and 3" north of the nucleus of the galaxy NGC 7408. A CROSS image of the same field taken on 2008 Dec. 27.0 showed nothing at this position (limiting mag about 18.5), and it does not appear on Palomar Sky Survey infrared, red, and blue plates. The discovery image has been posted at http://www.cortinastelle.it/cross/NGC7408_20090325.jpg. SN 2007bn also appeared in NGC 7408 (cf. CBET 940). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2009 CBAT 2009 March 27 (CBET 1740) Daniel W. E. Green