Electronic Telegram No. 1086 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 2007kg H. Mikuz, Crni Vrh Observatory, reports the discovery of an apparent supernova (mag about 17.1) on four unfiltered CCD images (roughly equivalent to the R band) taken around Sept. 22.90 UT with a 60-cm f/3.3 Cichocki reflector in the course of the "Comet and Asteroid Search Program" (PIKA) at Crni Vrh Observatory. The new object is located at R.A. = 23h58m37s.43, Decl. = +60o59'06".7 (equinox 2000.0; uncertainty estimated as about 0".2), which is approximately 7" east and 6" north of the center of a nearby faint galaxy. Nothing is visible at this location on several Palomar Sky Survey images (limiting B and I magnitudes 20.0; limiting R mag 20.5) and 2MASS images from the Aladin database. Further confirming CCD photometry with the same telescope on Sept. 23.974 using the USNO-B1 R2 catalogue yields R = 17.17 +/- 0.04 and B = 18.62 +/- 0.10. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2007 CBAT 2007 September 25 (CBET 1086) Daniel W. E. Green