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IAUC 8269: 2004C; C/2002 X16, 2002 Y4, 2003 A3, 2003 A4, 2003 A5

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                                                  Circular No. 8269
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     C. C. Dudley and J. Fischer, Naval Research Laboratory, report
the discovery of a new point source (mag K' about 14) in NGC 3683
observed with the U.S. Naval Observatory 1.55-m telescope (+ 2.1-
micron K' filter + ASTROCAM 1024x1024 ALADDIN InSb imager) at
Flagstaff on Jan. 12.5 UT.  The position of the source is R.A. =
11h27m29s.72, Decl. = +56o52'48".2 (equinox 2000.0), based on
positions of three 2MASS stars, which is 17" west and 10" north of
the K' nucleus of NGC 3683.  The source shows no perceptible drift
over 8 min (seeing about 1") and was not present on 2003 May 18,
the most recent prior observation with ASTROCAM.
     T. Matheson, P. Challis, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 370-750 nm)
of SN 2004C, obtained by P. Berlind on Jan. 15.51 UT with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST spectrograph), shows it
to be a type-Ic supernova, similar to SN 1990U about three weeks
past maximum (see Matheson et al. 2001, A.J. 121, 1648).  The
spectrum is highly reddened and shows a strong, narrow Na I D
absorption at the velocity of the host galaxy with an equivalent
width of 0.3 nm.  The dust maps of Schlegel et al. (1998, Ap.J.
500, 525) indicate a low value for Galactic reddening of E(B-V) =

COMETS C/2002 X16, 2002 Y4, 2003 A3, 2003 A4, 2003 A5 (SOHO)
     Further to IAUC 8266, K. Battams reports measures of
additional Kreutz comets found by X. Leprette and M. Oates (C/2002
X16), R. Kracht (C/2002 Y4), and R. Matson (remaining objects) on
SOHO website images; C/2002 X16, C/2002 Y4, and C/2003 A4 were
visible in C2-coronagraph images, while the 2003 comets were each
visible in C3 images.  Reduced positions and orbital elements by
B. G. Marsden appear on MPEC 2004-A52.

      Comet          2002 UT           R.A. (2000.0) Decl.
      C/2002 X16     Dec. 10.621       17 13.1      -24 48
      C/2002 Y4           26.171       18 25.6      -24 50

      Comet          2003 UT           R.A. (2000.0) Decl.
      C/2003 A3      Jan.  6.721       19 21.9      -24 43
      C/2003 A4           14.904       20 10.9      -25 01
      C/2003 A5           15.096       20 03.6      -23 54

                      (C) Copyright 2004 CBAT
2004 January 15                (8269)            Daniel W. E. Green

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