Electronic Telegram No. 3733 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network SUPERNOVA 2013gr IN ESO 114-G7 = PSN J01462790-5840238 Greg Bock, Windaroo, Queensland, Australia, reports the discovery by Peter Marples (Loganholme, Queensland) of an apparent supernova (red mag 17.3) on a 30-s unfiltered CCD image (limiting mag 17.8) taken by Marples on Nov. 28.48 UT with a 30-cm Meade LX200R f/6.2 reflector (+ SXV-H9 Starlight Xpress camera) in the course of the Backyard Observatory Supernova Search. The new object is located at R.A. = 1h46m27s.90, Decl. = -58d40'23".8 (equinox 2000.0; reference stars from USNO-B and UCAC4 catalogues), which is 8".9 west and 2".2 north of the nucleus of the galaxy ESO 114-G7. Nothing is visible at this position on Digitized Sky Survey red and infrared images (limiting red mag > 19). The variable was designated PSN J01462790-5840238 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2013gr based on the spectroscopic confirmation reported below. E. Y. Hsiao, N. Morrell, and M. M. Phillips, Las Campanas Observatory; G. H. Marion, University of Texas, Austin; T. Diamond, Florida State University; M. D. Stritzinger and C. Contreras, Aarhus University; and R. P. Kirshner, Harvard-Smithsonian Center for Astrophysics, report that a near- infrared spectrogram (range 800-2500 nm) of PSN J01462790-5840238 = SN 2013gr was obtained on Nov. 30.14 UT with the FoldedPort Infrared Echellette (FIRE) spectrograph on the 6.5-m Magellan Baade Telescope. The spectrum indicates that 2013gr is a 2002cx-like supernova. The near-infrared spectrum is similar to that of SN 2010ae near maximum light (Stritzinger et al. 2013, A.Ap., in press). The spectrum separately resolves the three components of the Ca II infrared triplet (854.2, 866.2, 849.8 nm), and the velocity for Ca II is approximately 5000 km/s, measured at the absorption minima and using a redshift z = 0.0074 for the presumed host galaxy, ESO 114-G7 (from Koribalski et al. 2004, A.J. 128, 16; via NED). M. Dennefeld, Institut d'Astrophysique de Paris and Universite Pierre et Marie Curie; D. Bersier and J. Lyman, Liverpool John Moores University; J. R. Maund, Queen's University, Belfast; A. Pastorello, Istituto Nazionale di Astrofisica, Padova Astronomical Observatory; A. De Cia, Weizmann Institute for Science; S. Benetti, Istituto Nazionale di Astrofisica, Padova Astronomical Observatory; C. Inserra, S. Smartt, K. Smith, and D. Young, Queen's University, Belfast; M. Sullivan, University of Southampton; S. Taubenberger, Max-Planck-Institut fuer Astrophysik; S. Valenti, University of California at Santa Barbara and Las Cumbres Observatory Global Telescope; M. Fraser, Institute of Astronomy, Cambridge; and O. Yaron and A. Gal-Yam, Weizmann Institute for Science, on behalf of the "Public European Southern Observatory Spectroscopic Survey for Transient Objects" collaboration (see Valenti et al., posted at URL http://www.astronomerstelegram.org/?read=4037), report that optical spectroscopy of 2013gr, obtained on Dec. 1.06 UT with the New Technology Telescope (+ EFOSC2; spectral range 360-910 nm), shows that it is a type-Ia supernova, similar to SN 2002cx, at redshift z = 0.007 and around five days after maximum. The classification was made via SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) and GELATO (Harutyunyan et al. 2008, A.Ap. 488, 383); PESSTO classification spectra can be obtained from website URL http://www.pessto.org/. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2013 CBAT 2013 December 4 (CBET 3733) Daniel W. E. Green