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IAUC 8291: 2004 DW; C/2003 F5, G4, H8-H12,, J2-J7

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                                                  Circular No. 8291
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)


2004 DW
     A slow-moving body reported by M. E. Brown, D. L. Rabinowitz,
and C. A. Trujillo, on CCD images obtained with the 1.2-m Schmidt
telescope at Palomar on Feb. 17 (cf. MPECs 2004-D09 and 2004-D13),
is apparently the second-largest known transneptunian object (after
Pluto), with an absolute magnitude H = 2.2 (assumed albedo
parameter G = 0.15).  Subsequent observations have been found on
CCD images and sky-survey photographs back to 1951 by R. Matson, M.
Meyer, and R. Stoss, leading to plutino-type orbital elements (a =
39.5 AU, e = 0.22, i = 20.6 deg; cf. MPEC 2004-D15).


COMETS C/2003 F5, G4, H8-H12, AND J2-J7 (SOHO)
     Further to IAUC 8283, measurements have been reported by K.
Battams (for C/2003 H12 and C/2003 J6) and by K. McGleam (remaining
comets) for numerous Kreutz sungrazing comets that were found on
SOHO C2 website images by R. Kracht (C/2003 F5, C/2003 H11, C/2003
J3, and C/2003 J6), X. Leprette (C/2003 G4), X.-m. Zhou (C/2003 H8
and C/2003 H9), T. Hoffman (C/2003 H10), R. Matson (C/2003 H12,
C/2003 J2, and C/2003 J4), P. Shkreby (C/2003 J5), J. Sachs (C/2003
J6), and H. Otterstedt (C/2003 J7).  C/2003 H12 was noted as being
very faint and visible on only four images.  C/2003 F5, C/2003 J6,
and C/2003 J7 were also visible in C3 coronagraph images.  The
reduced astrometry and orbital elements by B. G. Marsden appear on
the MPECs cited below.

  Comet         2003 UT          R.A. (2000) Decl.       MPEC
  C/2003 F5     Mar. 29.238       0 59.0   + 1 39      2004-C53
  C/2003 G4     Apr.  2.438       0 53.2   + 4 21      2004-C53
  C/2003 H8          22.983       2 08.4   +11 23      2004-C53
  C/2003 H9          24.643       2 14.6   +11 54      2004-C53
  C/2003 H10         28.976       2 30.2   +13 11      2004-C54
  C/2003 H11         29.518       2 29.1   +13 02      2004-C54
  C/2003 H12         30.868       2 36.9   +13 42      2004-C54
  C/2003 J2     May   1.226       2 38.2   +13 51      2004-C54
  C/2003 J3           5.785       2 55.1   +15 07      2004-D08
  C/2003 J4           5.910       2 56.1   +15 12      2004-D08
  C/2003 J5           8.288       3 04.8   +15 46      2004-D08
  C/2003 J6           9.613       3 12.1   +15 47      2004-D08
  C/2003 J7          14.738       3 30.5   +16 03      2004-D08

                      (C) Copyright 2004 CBAT
2004 February 20               (8291)            Daniel W. E. Green

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