Electronic Telegram No. 772 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 SUPERNOVAE 2006sa-2006sq B. Leibundgut, European Southern Observatory (ESO); J. Sollerman, DARK Cosmology Center; R. Foley, University of California, Berkeley; S. Rodney, University of Hawaii; P. Challis, Harvard-Smithsonian Center for Astrophysics; and K. Boutsia, ESO, on behalf of the ESSENCE project (cf. CBET 717; IAUC 8427, 8464), report the discovery of 17 supernovae on multiple R- and I-band images taken at the Blanco 4-m telescope (equipped with the MOSAIC II camera) during Nov. 10-29 by project members. Spectroscopic observations (range 380-890 nm) were obtained with Keck I (+ LRIS), Keck II (+ DEIMOS), the Very Large Telescope (+ FORS1), and the Magellan Baade Telescope (+ IMACS). The table below includes the R-band discovery magnitude, the redshift (z), the spectroscopic type, and an estimate of the phase (age, in days from maximum brightness; general uncertainty +/- 2 days) for each object. SN 2006 UT R.A. (2000.0) Decl. R z Type Age 2006sa Nov. 12 2 05 14.947 - 4 48 51.72 21.0 0.23 IIp -- 2006sb Nov. 12 2 06 30.310 - 4 05 30.60 20.8 0.3 Ia + 7 2006sc Nov. 12 2 10 10.227 - 4 44 12.52 21.8 0.4 Ia 0 2006sd Nov. 14 1 14 24.155 + 1 02 39.45 21.9 0.1 Ia - 3 2006se Nov. 14 1 14 48.054 + 0 06 39.39 22.7 0.6 Ia + 4 2006sf Nov. 14 2 08 11.654 - 3 51 40.19 22.5 0.6 Ia + 7 2006sg Nov. 14 2 08 13.041 - 3 46 21.93 21.6 0.44 Ic + 7 2006sh Nov. 14 2 09 11.064 - 3 44 42.01 23.2 0.3 Ia + 5 2006si Nov. 14 2 09 51.327 - 3 43 32.48 22.6 0.5 Ia + 4 2006sj Nov. 14 2 10 22.418 - 3 33 09.32 23.0 0.7 Ia + 6 2006sk Nov. 14 2 10 33.801 - 4 04 03.86 21.6 0.3 Ia - 1 2006sl Nov. 14 2 32 15.952 - 8 48 34.31 22.3 0.4 Ia +10 2006sm Nov. 14 2 33 29.487 - 8 30 11.94 22.6 0.6 Ia + 5 2006sn Nov. 16 2 06 18.250 - 4 51 33.12 23.0 0.4 Ia + 7 2006so Nov. 18 2 33 49.155 - 8 59 15.78 21.5 0.1 Ia - 7 2006sp Nov. 24 1 10 55.170 - 0 27 52.32 23.5 0.8 Ia - 4 2006sq Nov. 24 2 07 11.629 - 3 57 10.93 23.5 0.2 Ia - 4 NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 December 7 (CBET 772) Daniel W. E. Green