Electronic Telegram No. 3864 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 2014au IN PGC 51192 = PSN J14192892-0537361 S. Howerton, Arkansas City, KS, U.S.A.; A. J. Drake, M. J. Graham, S. G. Djorgovski, A. A. Mahabal, and R. Williams, California Institute of Technology; J. L. Prieto, Princeton University; M. Catelan, Pontificia Universidad Catolica de Chile; and E. Christensen and S. M. Larson, Lunar and Planetary Laboratory, University of Arizona; report the Catalina Real-time Transient Survey discovery of an apparent supernova in public images from the Mount Lemmon Survey: SN 2014 UT R.A. (2000.0) Decl. Mag. Offset 2014au Apr. 20.31 14 19 28.92 - 5 37 36.1 20.2 5".8 E, 43".9 S The variable was designated PSN J14192892-0537361 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2014au based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2014au: Apr. 20.580, 20.2 (Howerton; remotely with the iTelescope T17 0.43-m reflector + clear filter at Siding Spring; image posted at website URL https://www.flickr.com/photos/watchingthesky/13929578352/); 21.325, 19.1 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STXL-6303 camera at the New Mexico Skies observatory near Mayhill, NM, U.S.A.; position end figures 29s.05, 31".3; image posted at website URL https://www.flickr.com/photos/43846774@N02/13963964454/); 21.940, 19.5 (Gianluca Masi, Francesca Nocentini, and Patrick Schmeer; remotely using a 43-cm telescope near Ceccano, Italy; position end figures 28s.99, 31".5). S. Benitez and S. Taubenberger, Max-Planck-Institut fuer Astrophysik, Garching; J. Polshaw, S. Smartt, C. Inserra, K. Smith, and D. Young, Queen's University, Belfast; M. Fraser, University of Cambridge; J. Anderson, European Southern Observatory (ESO), Chile; N. Elias-Rosa, S. Benetti, A. Pastorello, and E. Cappellaro, Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica (INAf); M. Sullivan, University of Southampton; S. Valenti, Las Cumbres Observatory Global Telescope and University of California at Santa Barbara; O. Yaron, I. Manulis, and A. Gal-Yam, Weizmann Institute for Science; and C. Knapic, R. Smareglia and M. Molinaro, Trieste Astronomical Observatory, INAf, on behalf of the Public ESO Spectroscopic Survey for Transient Objects (PESSTO; see website URL http://www.pessto.org), report that a spectrogram of PSN J14192892-0537361 = SN 2014au was taken with the ESO New Technology Telescope at La Silla on Apr. 23.3, using EFOSC2 and Grism 13 (range 370-930 nm; 1.8-nm resolution). Cross-correlation of the spectrum with a library of template spectra using SNID (Blondin and Tonry 2007, Ap.J. 666, 1024) gives a best match to several type-IIP supernovae at the redshift of PGC 51192 (z = 0.03492; Jones et al. 2009, The 6dF Galaxy Survey Data Release 3) at phases between 2 and 3 weeks after explosion. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2014 CBAT 2014 May 7 (CBET 3864) Daniel W. E. Green