Electronic Telegram No. 2118
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
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SUPERNOVA 2010B IN NGC 5370
     J. Prieto, Carnegie Observatories; and R. Khan, Ohio State University,
report that optical spectra (range 390-740 nm; resolution 1.4 nm) of 2010B
(cf. CBET 2115) were obtained with the Hiltner 2.4-m telescope (+ CCDS) at
MDM Observatory on Jan. 9.47 UT.  The spectrum shows that 2010B is a normal
type-Ia supernova at maximum light.  After correcting for the recession
velocity of the host galaxy (NGC 5370, +3057 km/s; (de Vaucouleurs et al.
1991, Third Reference Catalogue of Bright Galaxies, ver. 3; via NED) an
expansion velocity of 10800 km/s is measured from the absorption minimum of
the Si II 635.5-nm feature.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2010 CBAT
2010 January 10                  (CBET 2118)              Daniel W. E. Green