Electronic Telegram No. 1366 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 2008cg A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams, California Institute of Technology; E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of Arizona; and E. Christensen, Gemini Observatory, report the discovery of an apparent supernova detected in multiple sequences of unfiltered CCD exposures of the Catalina Sky Survey (CSS) using the 0.7-m f/1.9 Catalina Schmidt telescope (+ 4000x4000 camera): SN 2008 UT R.A. (2000.0) Decl. Mag. Offset 2000cg May 5.39 15 54 15.15 +10 58 25.0 16.7 2".4 W, 15".0 N Additional CSS magnitudes for 2008cg: Mar. 4.45 UT, [19.5; 31.35, 17.6; Apr. 7.51, 16.9; 13.40, 16.8; 28.45 16.6. This object is not seen in prior Sloan Digital Sky Survey (SDSS) and Palomar-Quest co-added images to a limiting magnitude of approximately 21.5. The host galaxy (FGC 1965) has z = 0.036 (Giovanelli et al. 1997, A.J. 114, 122; via NED) and SDSS magnitudes g = 17.4, r = 16.8, and i = 16.4. Specific details and links to discovery images can be found at the following website URL: http://voeventnet.caltech.edu/feeds/ATEL/CSS/805051090854150901.atel.html NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2008 CBAT 2008 May 7 (CBET 1366) Daniel W. E. Green