[IAUC] CBET 2138: 20100122 : SUPERNOVA 2010N

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                                                  Electronic Telegram No. 2138
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2010N
     Further to CBET 2131, A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J.
Graham, and R. Williams, California Institute of Technology; J. Prieto,
Carnegie Observatories; M. Catelan, Pontificia Universidad Catolica de Chile;
E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of
Arizona; and E. Christensen, Gemini Observatory, report the CRTS discovery
of an apparent supernova in unfiltered Catalina Sky Survey (CSS) images:

 SN      2010 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2010N   Jan. 12.50   13 09 05.24  +17 04 22.3   16.7       --

Nothing was visible at this position on a CSS image from 2009 July 30.15
(limiting mag 18.5).
     I. K. W. Kleiser, J. M. Silverman, S. B. Cenko, and A. V. Filippenko,
University of California, Berkeley, report that inspection of CCD spectra
(range 350-1020 nm), obtained on Jan. 16 UT with the 3-m Shane reflector (+
Kast) at Lick Observatory, shows that 2010N is a type-Ia supernova that SNID
(Blondin and Tonry 2007, Ap.J. 666, 1024) indicates is about 2 to 3 weeks
past maximum.  From narrow emission features, it is found that the recession
velocity of 2010N's host galaxy is about 6400 km/s.


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                         (C) Copyright 2010 CBAT
2010 January 22                  (CBET 2138)              Daniel W. E. Green