Electronic Telegram No. 187 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 2005dc IN NGC 7107 P. Luckas, Perth, W. Australia; O. Trondal, Oslo, Norway; and M. Schwartz, Patagonia, AZ, report the discovery of an apparent supernova (mag 15.7) on an unfiltered CCD frames taken with a 0.35-m Tenagra telescope at Perth on July 26.70 and 27.62 UT in the course of the Tenagra Observatory Supernova Search. SN 2005dc is located at R.A. = 21h42m22s.66, Decl. = -44o47'21".2 (equinox 2000.0), which is 41" west and 9".6 north of NGC 7107 (the galaxy center has position end figures 26s.50, 30".8). Nothing was visible at the position of 2005dc on an image taken by Luckas on July 5.61 (limiting magnitude about 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 NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the formal IAU Circulars.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 July 27 (CBET 187) Daniel W. E. Green