Electronic Telegram No. 557 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 2006dd IN NGC 1316 M. Salvo, J. Blackman, B. Schmidt, and M. Bessell, Australian National University (ANU), report that a spectrogram (range 310-530 nm) of SN 2006dd (cf. IAUC 8723, CBET 554), obtained on June 21.81 UT with the ANU 2.3-m telescope (+ DBS), shows features typical of a type-Ia supernova around maximum light. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 June 22 (CBET 557) Daniel W. E. Green