Electronic Telegram No. 102 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 2004gw IN PGC 16812 T. Puckett and R. Ireland report the discovery of an apparent supernova (mag 17.9) on an unfiltered CCD frame taken with the 0.60-m automated supernova patrol telescope on Dec. 27.14 UT (and confirmed on frames taken on Dec. 29.11 at mag 17.7). The new object is located at R.A. = 5h08m48s.41, Decl. = +62o26'20".7 (equinox 2000.0), which is 17".7 east and 14".2 south of the center of PGC 16812. The object is not present on images taken by Puckett on Sept. 10 and Nov. 9 (limiting mag about 20.0). NOTE: These 'Central Bureau Electronic Telegrams' are intended to be preliminary announcements of items that later appear in the formal IAU Circulars. Citations should normally be made to IAUCs rather than to CBETs. (C) Copyright 2004 CBAT 2004 December 29 (CBET 102) Daniel W. E. Green