MPEC 2004-L42 : COMET C/2004 H6 (SWAN)

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M.P.E.C. 2004-L42                                Issued 2004 June 12, 17:03 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

         Supported in part by the Steven and Michele Kirsch Foundation
             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                            COMET C/2004 H6 (SWAN)

Observations:
    CK04H060  C2004 05 27.82280 03 23 27.85 -13 04 46.1                 EL042E13
    CK04H060  C2004 05 27.82470 03 23 27.61 -13 04 46.6                 EL042E13
    CK04H060  C2004 05 27.82635 03 23 27.38 -13 04 47.1                 EL042E13
    CK04H060  C2004 06 07.83583 03 02 44.76 -13 25 23.6          13.2 N EL042D87
    CK04H060  C2004 06 07.84157 03 02 44.10 -13 25 23.7          12.2 N EL042D87
    CK04H060  C2004 06 07.84769 03 02 43.32 -13 25 23.3          13.1 N EL042D87
    CK04H060  C2004 06 07.85452 03 02 42.42 -13 25 24.5          13.6 N EL042D87
    CK04H060  C2004 06 07.86087 03 02 41.65 -13 25 24.3          12.1 N EL042D87

Observer details:
D87 Brooklyn Park.  Observer M. Mattiazzo.  0.28-m f/3.3 Schmidt-Cassegrain
    + CCD.  Long. = 138.5500, rho cos phi' = 0.82079, rho sin phi' = -0.56931.
    The Long. was given incorrectly as 135.550 on IAUC 8346 in connection
    with the May 25 observations.
E13 Wanniassa.  Observer V. Tabur.  0.28-m Schmidt-Cassegrain + CCD.

Orbital elements:
    C/2004 H6 (SWAN)
T 2004 May 12.680 TT                                    MPC
q   0.77605              (2000.0)            P               Q
                   Peri.  269.030       +0.193437       +0.737571
                   Node   317.239       +0.593776       -0.612957
e   1.0            Incl.  107.653       -0.781033       -0.283324
From 14 observations 2004 May 21-June 7.

Ephemeris:
    C/2004 H6 (SWAN)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2004 06 04    03 10.29   -13 21.8    1.291    0.887    43.2    51.5   7.5
2004 06 14    02 49.46   -13 25.6    1.156    0.991    53.8    55.8   7.8
2004 06 24    02 22.76   -13 16.4    0.998    1.112    67.0    57.3   8.0
2004 07 04    01 44.24   -12 58.9    0.835    1.243    83.7    54.4   8.1
2004 07 14    00 44.61   -12 19.3    0.693    1.378   105.9    45.2   8.1
2004 07 24    23 17.50   -10 31.9    0.617    1.516   135.0    28.3   8.3

Brian G. Marsden             (C) Copyright 2004 MPC           M.P.E.C. 2004-L42

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