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IAU Minor Planet Center

Minor Planet Center

MPEC 2007-H65 : COMET C/2007 H1 (McNAUGHT)

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M.P.E.C. 2007-H65                                Issued 2007 Apr. 27, 15:18 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.

             Prepared using the Tamkin Foundation Computer Network

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

                          COMET C/2007 H1 (McNAUGHT)

Observations:
    CK07H010  C2007 04 20.80193 22 04 46.13 -08 48 47.5                 EH065E12
    CK07H010  C2007 04 25.78131 22 13 14.81 -08 15 12.0                 EH065349
    CK07H010  C2007 04 25.78215 22 13 14.93 -08 15 11.8          16.0 T EH065349

Observer details:
349 Ageo.  Observer K. Kadota.  0.25-m f/5.0 reflector + CCD.
E12 Siding Spring Survey.  Observer G. J. Garradd.  Measurer R. H. McNaught.
    0.5-m Uppsala Schmidt + CCD.

Orbital elements:
    C/2007 H1 (McNaught)
T 2007 June 19.146 TT                                   MPC
q   2.60798              (2000.0)            P               Q
                   Peri.  182.500       +0.866516       +0.488485
                   Node   147.606       -0.454573       +0.857205
e   1.0            Incl.   11.044       -0.206189       +0.163042
From 28 observations 2007 Apr. 17-25.

Ephemeris:
    C/2007 H1 (McNaught)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2007 04 20    22 03.39   -08 54.3    3.047    2.685    59.7    18.9  16.2
2007 04 30    22 20.33   -07 46.9    2.924    2.662    65.1    20.1  16.1
2007 05 10    22 36.74   -06 41.5    2.800    2.643    70.6    21.1  16.0
2007 05 20    22 52.51   -05 39.9    2.677    2.628    76.3    22.0  15.8
2007 05 30    23 07.51   -04 44.3    2.557    2.617    82.1    22.6  15.7
2007 06 09    23 21.61   -03 56.6    2.439    2.610    88.1    22.9  15.6
2007 06 19    23 34.63   -03 18.9    2.325    2.608    94.4    22.9  15.5
2007 06 29    23 46.39   -02 53.2    2.217    2.610   101.1    22.5  15.4

     Further observations of this comet are very desirable.

Brian G. Marsden             (C) Copyright 2007 MPC           M.P.E.C. 2007-H65

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