Electronic Telegram No. 426 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 2006au IN UGC 11057 O. Trondal, Oslo, Norway; P. Luckas, Perth, W. Australia; and M. Schwartz, Patagonia, AZ, report the discovery of an apparent supernova on unfiltered CCD frames taken in the course of the Tenagra Observatory Supernova Search with the 0.35-m Tenagra telescope in Oslo on Mar. 7.20 (at mag 17.2) and 10.65 UT (mag 17.4). SN 2006au is located at R.A. = 17h57m13s.56, Decl. = +12o11'03".2 (equinox 2000.0), which is 17".0 west and 18".2 north of the center of UGC 11057 (which has position end figures 14s.72, 10'45".0). Nothing was visible at the position of 2006au on an image taken by Schwartz on 2004 Sept. 17.15 (limiting magnitude about 19.5) using the 0.81-m Tenagra telescope at Patagonia. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 March 10 (CBET 426) Daniel W. E. Green