Electronic Telegram No. 1076 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 SUPERNOVAE 2007ix-2007jh Further to CBETs 611 and 1061, B. Bassett, South African Astronomical Observatory (SAAO); A. Becker, University of Washington (UW); D. Bizyaev and H. Brewington, Apache Point Observatory (APO); C. Choi, Seoul National University (SNU); D. Cinabro, Wayne State University (WSU); C. D'Andrea, University of Pennsylvania (Penn); J. Dembicky, APO; D. L. DePoy, Ohio State University (OSU); B. Dilday, University of Chicago (UC); M. Doi, University of Tokyo (UoT); J. Eastman, OSU; J. Frieman, Fermilab and UC; C. Gall, University of Copenhagen (UK); P. Garnavich, University of Notre Dame; A. Goobar, Stockholm University; C. Hogan, UW; J. Holtzman, New Mexico State University; M. Im, SNU; S. Jha, Rutgers University; K. Konishi, UoT; J. Krzesinski, APO; H. Lampeitl, University of Portsmouth (UP); R. Kessler, UC; B. Ketzeback, D. Long, O. Malanushenko, and V. Malanushenko, APO; J. Marriner, Fermilab; R. McMillan, APO; G. Miknaitis, Fermilab; T. Morokuma, National Astronomical Observatory of Japan; J. Mosher, Penn; R. Nichol, UP; D. Oravetz and K. Pan, APO; J. L. Prieto, OSU; M. Richmond, Rochester Institute of Technology; A. Riess, Space Telescope Science Institute; R. Romani, Stanford University (SU); M. Sako, Penn; D. Schneider, Pennsylvania State University; A. Simmons, APO; M. Smith, UP; S. Snedden, APO; J. Sollerman and M. Stritzinger, UK; N. Takanashi and K. Tokita, UoT; M. F. Taylor, WSU; K. van der Heyden, University of Cape Town; S. Watters, APO; N. Yasuda, UoT; C. Wheeler, University of Texas, and C. Zheng, SU, on behalf of the Sloan Digital Sky Survey II collaboration, report the discovery of eleven supernovae on g, r, and i images taken with the SDSS 2.5-m telescope at APO by the SDSS observing team. A. Aragon-Salamanca (University of Nottingham), M. Bremer (University of Bristol), M. Turatto (University of Padova), A. Goobar, R. Nichol, J. Sollerman, P. Ruiz-Lapuente (University of Barcelona), F. Castander (University of Barcelona), A. K. Romer (University of Sussex), C. Collins (Liverpool John Moores University), and J. Lucey and A. Edge (University of Durham) report that confirming spectroscopy was obtained of 2007ix, 2007ja, 2007jb, 2007jc, and 2007je at the European Southern Observatory's New Technology Telescope on the night of Sept. 17 by M. Smith and L. Ostman (Stockholm University). M. Stritzinger, C. Gall, and J. Sollerman report that spectroscopy was obtained by Stritzinger and Gall on the Nordic Optical Telescope on the night of Sept. 17 for 2007jd, 2007jf, 2007jg, and 2007jh. R. Romani, C. Zheng, M. Sako, C. Wheeler, D. Schneider, R. Bender and U. Hopp (University of Munich), and W. Kollatschny (University of Goettingen) report that spectroscopy was obtained on the night of Sept. 14 with the Hobby Eberly Telescope for 2007iy and 2007iz. The discovery magnitudes tabulated below are all g magnitudes; spectroscopic redshifts are given in the column labelled z. Peak dates (all 2007) are approximate estimates from fits to the early light curves, with a typical uncertainty of plus-or- minus several days. SN Discov. R.A. (2000.0) Decl. Mag. z Estimated Type Date UT Peak Date 2007ix Sept. 3 0 51 30.88 - 0 56 50.6 20.6 0.20 Sept. 9 Ia 2007iy Sept. 3 20 41 05.96 - 0 25 19.6 22.9 0.37 Sept. 1 Ia 2007iz Sept. 3 21 17 35.50 + 0 18 56.3 22.2 0.25 Sep. 13 II 2007ja Sept. 3 23 30 05.49 + 0 43 32.3 21.7 0.09 Sept. 2 IIP 2007jb Sept. 4 0 26 33.79 + 0 02 31.1 21.1 0.28 Sept. 9 Ia 2007jc Sept. 4 23 23 48.62 - 1 08 10.1 20.2 0.13 Sept. 9 Ia/Ic 2007jd Sept. 5 2 59 53.37 + 1 09 38.6 22.5 0.07 Sep. 25 Ia 2007je Sep. 12 2 11 47.31 - 0 54 44.8 21.2 0.16 Sep. 23 Ia 2007jf Sep. 14 0 12 22.32 - 1 06 19.6 21.0 0.07 Sep. 10 IIP 2007jg Sep. 14 3 29 50.82 + 0 03 24.6 18.4 0.04 Sep. 27? Ia 2007jh Sep. 15 3 36 01.54 + 1 06 12.2 19.2 0.04 Sep. 15 Ia NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2007 CBAT 2007 September 19 (CBET 1076) Daniel W. E. Green