Electronic Telegram No. 1138 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 SUPERNOVA 2007qe F. Yuan, University of Michigan; R. Quimby, California Institute of Technology; J. Aretakis and C. Akerlof, University of Michigan; and J. C. Wheeler, University of Texas; on behalf of the ROTSE collaboration, together with the "Nearby Supernova Factory" (NSF) collaboration, report the discovery of a supernova (mag about 17.4) in unfiltered CCD images taken with the 0.45-m ROTSE-IIIb telescope at McDonald Observatory on Nov. 13.17 UT. The new object, which was measured at mag about 17.0 on Nov. 14.12, is located at R.A. = 23h54m12s.98, Decl. = +27o24'33".4 (equinox 2000.0; positional uncertainty < 1"), which is 11".9 east and 1".1 north of the center of its apparent host galaxy (seen in Digitized Sky Survey images). A spectrum, obtained by the NSF collaboration on Nov. 14.3 with the SuperNova Integral Field Spectrograph on the University of Hawaii 2.2-m telescope, shows 2007qe to be a young type-Ia supernova, easily a week before peak brightness. The redshift is undetermined, as no lines from the host are present in the "Integral Field Unit". However, compared to other supernova spectra at similar epochs, the redshift velocity should be less than 3000 km/s. The Ca II infrared triplet, and H and K, lines are quite broad, with the former showing absorption over 90 nm. A finding chart of 2007qe can be found at http://www.rotse.net/transients/j2354+2724/j235413+272433.jpg. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2007 CBAT 2007 November 15 (CBET 1138) Daniel W. E. Green