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IAUC 7799: C/2002 A3; 2002I; IM Nor

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                                                  Circular No. 7799
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 A3 (LINEAR)
     An object reported as asteroidal by LINEAR (discovery
observation below) has been noted by several CCD observers to be
cometary:  Jan. 19.9 UT, slightly diffuse, m_1 = 17.3 (J. Nomen,
Barcelona, Spain); 20.6, 10" coma, m_1 = 17.3 (J. Broughton, Reedy
Creek, Qld.); 21.2, fuzzy coma of diameter about 10" (R. Dyvig,
Quinn, SD); 21.2, m_1 = 17.0, 22" tail in p.a. 250 deg (R. Fredrick,
R. Trentman, and R. Gruenke, Louisburg, KS).

     2002 UT             R.A. (2000) Decl.        m2
     Jan. 13.22750    6 42 26.93   -13 34 44.8   17.6

MPEC 2002-B18 has astrometry, orbital elements (below) and
ephemeris:

     T = 2002 May   3.404 TT          Peri. = 330.334
                                      Node  = 137.279   2000.0
     q = 5.08347 AU                   Incl. =  47.389


SUPERNOVA 2002I IN IC 4229
     D. Weisz and W. D. Li, University of California at Berkeley,
report the LOTOSS (cf. IAUC 7514) discovery of another apparent
supernova (mag about 17.3) on unfiltered KAIT images taken on Jan.
19.5 and 20.5 UT.  SN 2002I is located at R.A. = 13h22m26s.84,
Decl. = -2 25'04".1 (equinox 2000.0), which is 11".1 east and 2".6
north of the nucleus of IC 4229.  A KAIT image taken on 2001 June
16.3 showed nothing at this position (limiting mag about 19.0)


IM NORMAE
     H. W. Duerbeck, Vrije Universiteit (VU), Brussels; R. Baptista,
Departamento de Fisica, Universidade Federal de Santa Catarina,
Florianopolis; C. M. Dutra, Departamento de Astronomia, Universidade
de Sao Paulo; and C. Sterken, VU, report low- and medium-resolution
spectroscopy of this recurrent nova on Jan. 14.4, 15.4, and 17.4 UT
with the European Southern Observatory 1.52-m telescope at La Silla:
"The lines H_beta-H_epsilon show P-Cyg profiles, with an average
FWHM of 1150 km/s and a radial velocity of +400 km/s for the
emission component, and a radial velocity of -860 km/s for the weak
absorption component.  The spectrum is dominated by emission of Fe
II (multiplets 27, 38, 42, 49) in the blue and of O I (1, 4) and Ca
II (2) in the red.  This is the first recurrent nova belonging to
the Fe II class (see Williams 1992, A.J. 104, 725)."

                      (C) Copyright 2002 CBAT
2002 January 21                (7799)            Daniel W. E. Green

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