Electronic Telegram No. 3745
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 2013ha IN MCG +11-8-25 = PSN J06154985+6650194
     R. Gagliano, J. Newton, and T. Puckett report the discovery of an
apparent supernova (mag 17.0) on unfiltered CCD images (limiting mag 19.0)
taken with a 0.35-m reflector at Portal, AZ, U.S.A., on Nov. 6.354 UT in the
course of the Puckett Observatory Supernova Search.  The new object, which was
confirmed on Nov. 12.2888 at mag 17.0 on images (limiting mag 19.1) taken by
Puckett with the 0.40-m reflector at Portal, is located at R.A. = 6h15m49s.85,
Decl. = +66o50'19".4 (equinox 2000.0), which is 3".5 east and 2".0 south of
the center of MCG +11-8-25 = PGC 18729.  An image has been posted at website
URL http://www.possdata.com/PSNJ06154985+6650194.jpg.  The variable was
designated PSN J06154985+6650194 when it was posted at the Central Bureau's
TOCP webpage and is here designated SN 2013ha based on the spectroscopic
confirmation reported below.  Additional CCD magnitudes for 2013ha:  2012
Feb. 6, [19.1 (Puckett); 2013 Nov. 17.497, 16.8 (J. Brimacombe, Cairns,
Australia; remotely using a 51-cm telescope at the New Mexico Skies
observatory near Mayhill, NM, USA; position end figures 50s.13, 18".2; image
posted at URL http://www.flickr.com/photos/43846774@N02/10933482336/); 19.301,
16.8 (Brimacombe; position end figures 49s.99, 19".7; image posted at URL
http://www.flickr.com/photos/43846774@N02/11065964315/); 21.256, 16.8
(Brimacombe; position end figures 49s.96, 19".5); 26.897, 17.5 (Gianluca Masi,
Francesca Nocentini, and Patrick Schmeer; remotely using a 43-cm telescope
near Ceccano, Italy; position end figures 49s.99, 18".8); Dec. 2.981, 17.5
(Massimiliano Martignoni, Magnago, Italy, 0.25-m Schmidt-Cassegrain reflector;
position end figures 49s.89, 19".8).

     Fang Huang, Beijing Normal University; X.-F. Wang, Tsinghua University;
and Tianmeng Zhang, National Astronomical Observatories of China (NAOC),
report on an optical spectrogram (range 370-860 nm) of PSN J06154985+6650194
= SN 2013ha that was obtained on Nov. 29.79 UT with the 2.16-m telescope (+
BFOSC) at the Xinglong Station of NAOC.  The spectrum is likely consistent
with a type-IIn supernova.  Cross-correlation with a library of supernova
spectra using the "Supernova Identification" code (SNID; Blondin and Tonry
2007, Ap.J. 666, 1024) shows that 2013ha matches with SN 1996L at 58 days
past maximum brightness.  The narrow emission line of H_alpha indicates a
redshift of 0.0131 for the host galaxy, MCG +11-8-25.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 December 9                  (CBET 3745)              Daniel W. E. Green