Electronic Telegram No. 555 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 2006de IN MCG -03-55-3 Further to IAUC 8723, N. Lee and W. Li report the LOSS/KAIT discovery of an apparent supernova on unfiltered KAIT images taken on June 2.49 (at mag 17.2) and 11.47 UT (mag 17.5). SN 2006de is located at R.A. = 21h35m33s.33, Decl. = -19o01'46".5 (equinox 2000.0), which is 11".2 west and 4".6 north of the center of MCG -03-55-3. Nothing was visible at this location on a KAIT image taken on 2005 Oct. 22.19 (limiting mag 19.0). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 June 21 (CBET 555) Daniel W. E. Green