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Minor Planet Center

MPEC 2009-W147: COMET P/2009 W1 (HILL)

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M.P.E.C. 2009-W147                               Issued 2009 Nov. 30, 16:50 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 P/2009 W1 (HILL)

Observations:
    PK09W010  C2009 11 22.69919 09 49 55.33 +29 00 27.8          17.9 N EW147400
    PK09W010  C2009 11 22.71272 09 49 55.96 +29 00 30.3          18.0 N EW147400
    PK09W010  C2009 11 22.72419 09 49 56.54 +29 00 31.5          18.0 N EW147400
    PK09W010  C2009 11 24.97313 09 51 45.34 +29 06 16.3          18.5 N EW147A77
    PK09W010  C2009 11 24.97935 09 51 45.62 +29 06 18.2          18.0 N EW147A77
    PK09W010  C2009 11 24.98558 09 51 45.90 +29 06 19.2          18.5 N EW147A77
    PK09W010  C2009 11 25.41812 09 52 06.05 +29 07 30.3          18.8 T EW147H45
    PK09W010  C2009 11 25.41983 09 52 06.22 +29 07 30.4          18.9 T EW147H45
    PK09W010  C2009 11 25.42151 09 52 06.25 +29 07 30.4          18.7 T EW147H45
    PK09W010  C2009 11 25.42344 09 52 06.32 +29 07 30.6          18.8 T EW147H45
    PK09W010  C2009 11 25.42505 09 52 06.38 +29 07 31.7          18.8 T EW147H45
    PK09W010  C2009 11 25.42708 09 52 06.41 +29 07 32.0          18.9 T EW147H45
    PK09W010  C2009 11 25.42939 09 52 06.42 +29 07 32.0          18.9 T EW147H45
    PK09W010  C2009 11 26.11565 09 52 38.17 +29 09 26.7          18.2 N EW147A79
    PK09W010  C2009 11 26.12548 09 52 38.64 +29 09 28.3          18.2 N EW147A79
    PK09W010  C2009 11 28.13148 09 54 07.86 +29 15 21.6          18.1 N EW147B18
    PK09W010  C2009 11 28.13287 09 54 07.97 +29 15 22.0          18.4 N EW147B18
    PK09W010  C2009 11 28.13427 09 54 07.98 +29 15 22.3          18.4 N EW147B18
    PK09W010  C2009 11 28.38877 09 54 19.06 +29 16 10.2          18.0 N EW147850
    PK09W010  C2009 11 28.40409 09 54 19.71 +29 16 13.3          18.2 N EW147850
    PK09W010  C2009 11 28.41937 09 54 20.35 +29 16 16.0          18.7 N EW147850
    PK09W010  C2009 11 28.43463 09 54 20.97 +29 16 19.0          18.3 N EW147850
    PK09W010  C2009 11 28.44988 09 54 21.61 +29 16 21.8          18.5 N EW147850
    PK09W010  C2009 11 29.13407 09 54 50.77 +29 18 29.4          18.3 N EW147B18
    PK09W010  C2009 11 29.13616 09 54 50.82 +29 18 29.9          18.3 N EW147B18
    PK09W010  C2009 11 29.13825 09 54 50.89 +29 18 30.1          18.0 N EW147B18

Observer details:
400 Kitami.  Observer K. Endate.  0.30-m f/3.8 reflector + CCD.
850 Cordell-Lorenz Observatory, Sewanee.  Observer D. T. Durig.  0.30-m f/2.5
    Schmidt-Cassegrain + CCD.
A77 Observatoire Chante-Perdrix, Dauban.  Observers C. Rinner, F. Kugel.
    Measurer F. Kugel.  0.5-m f/3 reflector + CCD.
A79 Zvezdno Obshtestvo Observatory, Plana.  Observer F. Fratev.  0.35-m f/3.4
    reflector + CCD.
B18 Terskol.  Observers M. Andreev, A. Sergeev, N. Parakhin, V. Kozlov,
    N. Karpov.  Measurer M. Andreev.  0.6-m f/12.8 Cassegrain + CCD.
H45 Arkansas Sky Obs., Petit Jean Mountain South.  Observer P. C. Sherrod.
    0.51-m f/4.3 astrograph + CCD.

Orbital elements:
    P/2009 W1 (Hill)
T 2009 Sept. 26.669 TT                                  MPC
q   2.97739              (2000.0)            P               Q
n   0.103266       Peri.   52.372       -0.294982       -0.932255
a   4.49949        Node    56.066       +0.777699       -0.361626
e   0.33828        Incl.   14.625       +0.555131       +0.011237
P   9.54
From 83 observations 2009 Nov. 18-29.

Ephemeris:
    P/2009 W1 (Hill)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2009 11 25    09 51.77   +29 06.4    2.630    2.997   102.2    18.8  18.4
2009 12 05    09 58.60   +29 39.2    2.513    3.004   110.6    17.9  18.3
2009 12 15    10 03.24   +30 24.0    2.405    3.012   119.4    16.5  18.2
2009 12 25    10 05.45   +31 19.9    2.309    3.022   128.5    14.7  18.1
2010 01 04    10 05.09   +32 23.8    2.231    3.032   137.8    12.6  18.1
2010 01 14    10 02.21   +33 31.1    2.173    3.043   146.7    10.2  18.0
2010 01 24    09 57.05   +34 35.3    2.138    3.056   154.4     8.0  18.0

     Further observations of this comet are desirable.

Brian G. Marsden             (C) Copyright 2009 MPC           M.P.E.C. 2009-W147

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