IAU Central Bureau for Astronomical Telegrams

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IAUC 8028: C/2002 X1; 2002ic; 2002ji

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IAUC number


                                                  Circular No. 8028
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 X1 (LINEAR)
     An object reported as asteroidal by LINEAR (discovery
observation below), and placed on the NEO Confirmation Page due to
its unusual motion, has been found to be cometary on CCD images
taken around Dec. 7.4 UT by D. T. Durig (Sewanee, TN, 0.3-m
reflector; 25" coma, m_1 = 15.5), by P. R. Holvorcem and M.
Schwartz (Nogales, AZ, 0.81-m telescope; diffuse with coma diameter
about 10" and a hint of tail at p.a. about 300 deg), and by G. Hug,
R. Valentine, and B. Leifer (Eskridge, KS, 0.30-m reflector;
diffuse).

     2002 UT             R.A. (2000) Decl.        m2
     Dec.  5.44440   10 34 06.76   +19 48 16.6   18.0

     The available astrometry and the following preliminary
parabolic orbital elements appear on MPEC 2002-X46.

     T = 2002 Sept. 6.989 TT          Peri. =  15.653
                                      Node  = 329.682   2000.0
     q = 0.26947 AU                   Incl. =  16.937


SUPERNOVA 2002ic
     Further to IAUC 8027, M. Hamuy reports that a spectrogram
(range 320-920 nm), taken on Nov. 29.11 UT by J. Maza and M.
Phillips with the Baade telescope, shows that SN 2002ic (cf. IAUC
8019) is a type-Ia supernova.  The spectrum reveals strong Fe III
absorption features and a weak Si II 635.5-nm line, similar to the
peculiar SN 1999ac near maximum light; superimposed narrow emission
lines yield a redshift of 0.066.


SUPERNOVA 2002ji IN NGC 3655
     P. Ruiz-Lapuente, University of Barcelona, reports [on behalf
of the 'International Time Programme on Physics and Cosmology' at
the telescopes of the European Northern Observatory, and of the
ERTN (cf. IAUC 7987)] that a spectrogram (range 335-905 nm;
resolution 1.6 nm) of SN 2002ji (cf. IAUC 8025) was obtained with
the Nordic Optical Telescope (+ ALFOSC) at La Palma on Dec. 5.24 UT
by S. Benetti, A. Balastegui, S. Basa, D. Guide, J. Mendez, J.
Raux, and M. Turatto.  The spectrum is that of a type-Ib/c
supernova near maximum light, with broad lines of Ca II (H and K),
Fe II, and Na I with P-Cyg profiles overimposed on a blue continuum.
The expansion velocity (from the Ca II lines) is about 15900 km/s.

                      (C) Copyright 2002 CBAT
2002 December 7                (8028)            Daniel W. E. Green

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