Electronic Telegram No. 748 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 2006oq E. J. Christensen, Lunar and Planetary Laboratory, reports the discovery of an apparent supernova (mag V about 15.8) on four unfiltered Catalina Sky Survey (CSS) images taken during Nov. 17.484-17.502 UT. The new object, designated 2006oq, is located at R.A. = 11h44m00s.07, Decl. = +19o58'38".3 (equinox 2000.0), which is 31" west and 17" north of the center of a galaxy located at position end figures 02s.29, 20".9 (but there are numerous nearby cluster galaxies). Nothing is visible at the position of 2006oq on a Digitized Sky Survey plate taken 1955 Apr. 24 or in a combined CSS image of 24 exposures obtained between March 2005 and April 2006 (limiting magnitude of V approximately 21.5). S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian Center for Astrophysics, report that a spectrum (range 350-740 nm) of 2006oq, obtained on Nov. 21.57 UT by W. Peters with the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia supernova around two weeks past maximum light. Cross-correlation with a library of supernova spectra indicates that 2006oq is most similar to the type-Ia supernova 1989B at +14 days from maximum light, at an approximate redshift cz = 6600 +/- 1500 km/s. Adopting this recession velocity for the supernova, the maximum absorption in the Si II line (rest 635.5 nm) is blueshifted by roughly 11000 km/s. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 November 21 (CBET 748) Daniel W. E. Green