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IAUC 8013: C/2002 V2; 2002gx, 2002hu,, 2002hv

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                                                  Circular No. 8013
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 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)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET C/2002 V2 (LINEAR)
     An apparently asteroidal object discovered by LINEAR
(discovery observation below) and posted on the NEO Confirmation
Page has been found to have cometary appearance.  M. Tichy found a
compact 6" coma on KLENOT images taken at Klet on Nov. 7.13 UT.
Images taken by P. R. Holvorcem and M. Schwartz with the Tenagra
0.81-m reflector on Nov. 7.4 and 8.4 show the object diffuse with
a coma diameter of about 8".

     2002 UT             R.A. (2000) Decl.        m2
     Nov.  5.31161    5 41 06.16   +10 31 54.8   18.6

     Additional astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2002-V48.

     T = 2003 Jan. 10.559 TT          Peri. = 304.195
                                      Node  =  19.392   2000.0
     q = 6.94322 AU                   Incl. = 166.881


SUPERNOVAE 2002gx, 2002hu, AND 2002hv
     T. Matheson, P. Challis, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 370-750 nm)
of SN 2002hu (cf. IAUC 8012), obtained by L. Macri on Nov. 8.80 UT
with the Mt. Hopkins 1.5-m telescope (+ FAST), shows it to be a
type-Ia supernova before maximum.  Narrow H-alpha emission from a
nearby H II region indicates a recession velocity of about 11000
km/s for the host galaxy.  The expansion velocity derived from the
minimum of the Si II line (rest 635.5 nm) is about 10500 km/s.  The
spectral-feature age of the supernova is 5 +/- 2 days before
maximum light.  A spectrum of SN 2002hv (cf. IAUC 8012), obtained
by P. Berlind on Nov. 9.49 with the same telescope, shows it to be
a type-Ia supernova a few weeks past maximum.
     A. V. Filippenko, R. Chornock, and S. Jha, University of
California, Berkeley; and B. Barris, University of Hawaii, report
that inspection of CCD spectra (range 310-1000 nm), obtained on
Nov. 8 UT with the Keck I 10-m telescope (+ LRIS), finds that SN
2002gx (IAUC 7995) is of type Ia, about 2 months past maximum
brightness.  The redshift of the host galaxy is roughly 0.08.  SN
2002hu is also of type Ia, a few days before maximum brightness.
Once again, from a comparison of supernova spectra, the redshift of
the host galaxy is about 0.03.  SN 2002hv is also of type Ia, about
2 months past maximum.

                      (C) Copyright 2002 CBAT
2002 November 9                (8013)            Daniel W. E. Green

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