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Minor Planet Center

MPEC 2010-C10 : COMET C/2010 A4 (SIDING SPRING)

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M.P.E.C. 2010-C10                                Issued 2010 Feb. 3, 22:07 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/2010 A4 (SIDING SPRING)

Observations:
    CK10A040  C2010 01 24.76211 10 47 17.14 -30 02 13.7                 EC010372
    CK10A040  C2010 01 24.76591 10 47 16.76 -30 02 16.7          17.4 N EC010372
    CK10A040  C2010 01 25.75342 10 45 50.51 -30 15 41.7          17.2 N EC010372
    CK10A040  C2010 01 26.55662 10 44 38.89 -30 26 29.9          18.6 N EC010D96
    CK10A040  C2010 01 26.56155 10 44 38.44 -30 26 34.2          18.2 N EC010D96

Observer details:
372 Geisei.  Observers T. Seki, K. Muraoka, S. Shimomoto.  0.70-m f/7
    reflector + CCD.
D96 Tzec Maun Observatory, Moorook.  Observer E. Bryssinck.  0.15-m f/7.3
    refractor + CCD.

Orbital elements:
    C/2010 A4 (Siding Spring)
T 2010 Oct. 7.495 TT                                    MPC
q   2.74823              (2000.0)            P               Q
                   Peri.  271.305       +0.049254       +0.972433
                   Node   346.731       +0.495469       -0.221930
e   1.0            Incl.   96.778       -0.867228       -0.071565
From 67 observations 2010 Jan. 12-26.

Ephemeris:
    C/2010 A4 (Siding Spring)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2010 02 03    10 32.50   -32 01.8    3.026    3.704   127.0    12.3  18.6
2010 02 13    10 13.32   -33 49.6    2.903    3.640   132.2    11.6  18.4
2010 02 23    09 51.60   -35 05.8    2.817    3.578   134.3    11.4  18.3
2010 03 05    09 28.72   -35 44.3    2.768    3.517   132.7    12.0  18.2
2010 03 15    09 06.31   -35 44.8    2.755    3.457   127.9    13.1  18.1
2010 03 25    08 45.92   -35 13.1    2.775    3.398   121.1    14.6  18.0
2010 04 04    08 28.61   -34 19.7    2.820    3.341   113.1    16.0  18.0
2010 04 14    08 14.82   -33 15.8    2.884    3.286   104.8    17.2  18.0
2010 04 24    08 04.52   -32 11.5    2.960    3.233    96.6    18.0  18.0

     Further observations of this comet are desirable.

Brian G. Marsden             (C) Copyright 2010 MPC           M.P.E.C. 2010-C10

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MPEC number:

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