Electronic Telegram No. 2119 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 SUPERNOVAE 2010C AND 2010D Further to CBET 2111, W. Li, S. B. Cenko, and A. V. Filippenko report the LOSS discovery of two apparent supernovae on unfiltered KAIT images: SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010C Jan. 10.49 10 51 29.87 + 9 16 33.1 18.8 5".3 E, 12".9 S 2010D Jan. 10.50 10 31 44.28 +46 40 05.0 17.0 7".7 W, 12".8 S Additional KAIT magnitudes for 2010C in NGC 3428: a combined image from 2009 Jan.-Mar., [20.5; Dec. 18.52 UT, 19.0; 24.51, 18.5. Additional KAIT magnitudes for 2010D in UGC 5714: 2009 Dec. 20.53, [19.3; 2010 Jan. 11.34, 17.2. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2010 CBAT 2010 January 11 (CBET 2119) Daniel W. E. Green