Electronic Telegram No. 3391 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 2013K IN ESO 9-G10 = PSN J17393154-8518381 Stuart Parker, Canterbury, New Zealand, reports the discovery of an apparent supernova (red mag 17.7) on a 30-s unfiltered CCD image (limiting mag 18.5) taken by himself on Jan. 20.413 UT with a 35-cm Celestron C14 reflector (+ ST10 camera) at his Parkdale Observatory in the course of the Backyard Observatory Supernova Search. The new object is located at R.A. = 17h39m31s.54, Decl. = -85d18'38".10 (equinox 2000.0; reference stars from USNO-B and UCAC3 catalogues), which is 6" east and 1" south of the nucleus of the galaxy ESO 9-G10. Nothing is visible at this position on Digitized Sky Survey red and infrared images (limiting red magnitude > 19) or on an image taken by Parker on 2012 Dec. 9.491 (limiting red magnitude > 18). Parker has posted an image that can be viewed via website URL http://tinyurl.com/acupbro. The variable was designated PSN PSN J17393154-8518381 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2013K based on the spectroscopic confirmation reported below. F. Taddia, J. Sollerman, G. Leloudas, and M. Ergon, Stockholm University; S. Benetti and A. Pastorello, Istituto Nazionale di Astrofisica, Padova Astronomical Observatory; S. Valenti, University of California at Santa Barbara and Las Cumbres Observatory Global Telescope; S. Taubenberger, Max-Planck-Institut fuer Astrophysik, Garching; S. J. Smartt, K. Smith, D. Young, and M. Fraser, Queen's University, Belfast; M. Sullivan, University of Southampton; and A. Gal-Yam and O. Yaron, Weizmann Institute for Science, on behalf of the PESSTO collaboration (see Valenti et al., posted at website URL http://www.astronomerstelegram.org/?read=4037), report that optical spectroscopy (range 390-920 nm), obtained on Jan. 22.33 UT with the New Technology Telescope (+ EFOSC2), show that PSN J17393154-8518381 = SN 2013K is a type-IIP supernova a few days past maximum. Balmer lines showing P-Cyg profiles characterize the spectrum. The absorption at rest wavelength 624 nm is unusually strong. PESSTO classification spectra can be obtained from website URL http://www.pessto.org/; classification was made via SNID (Blondin and Tonry 2007, Ap.J. 666, 1024). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2013 CBAT 2013 January 26 (CBET 3391) Daniel W. E. Green