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IAU Minor Planet Center

Minor Planet Center

MPEC 2006-S66 : COMET C/2006 S4 (CHRISTENSEN)

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M.P.E.C. 2006-S66                                Issued 2006 Sept. 26, 17:14 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 Brinson Foundation
                  Supported in part by the TABASGO 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/2006 S4 (CHRISTENSEN)

Observations:
    CK06S040  C2006 09 22.88973 01 50 15.47 -16 24 32.2          17.0 T ES066585
    CK06S040  C2006 09 22.89471 01 50 15.03 -16 24 31.2          17.0 T ES066585
    CK06S040  C2006 09 22.90644 01 50 14.32 -16 24 30.8          16.9 T ES066585
    CK06S040  C2006 09 23.40961 01 49 46.81 -16 23 05.9          17.8 T ES066673
    CK06S040  C2006 09 23.41296 01 49 46.60 -16 23 05.2                 ES066673
    CK06S040  C2006 09 23.41794 01 49 46.33 -16 23 04.3                 ES066673
    CK06S040  C2006 09 23.45950 01 49 43.79 -16 22 57.4          17.7 T ES066682
    CK06S040  C2006 09 23.47401 01 49 42.97 -16 22 54.7          18.0 T ES066682
    CK06S040  C2006 09 23.48850 01 49 42.24 -16 22 52.1          18.5 T ES066682
    CK06S040  C2006 09 23.60590 01 49 35.94 -16 22 28.0          19.6 N ES066415
    CK06S040  C2006 09 23.61992 01 49 35.15 -16 22 25.4          19.6 N ES066415
    CK06S040  C2006 09 23.76879 01 49 26.71 -16 22 04.9                 ES066349
    CK06S040  C2006 09 23.77170 01 49 26.53 -16 22 04.2                 ES066349
    CK06S040  C2006 09 23.77463 01 49 26.36 -16 22 03.6          17.3 T ES066349
    CK06S040  C2006 09 23.99815 01 49 13.88 -16 21 25.6          17.0 T ES066585
    CK06S040  C2006 09 24.00888 01 49 13.37 -16 21 23.9          17.1 T ES066585
    CK06S040  C2006 09 24.01378 01 49 13.23 -16 21 23.7          17.0 T ES066585
    CK06S040  C2006 09 24.01868 01 49 12.92 -16 21 23.3          18.0 N ES066585
    CK06S040  C2006 09 24.02359 01 49 12.63 -16 21 22.4          18.0 N ES066585
    CK06S040  C2006 09 24.03162 01 49 12.24 -16 21 17.9          17.2 T ES066585
    CK06S040  C2006 09 24.38489 01 48 52.00 -16 20 18.3          17.3 T ES066699
    CK06S040  C2006 09 24.40682 01 48 50.80 -16 20 14.4                 ES066699
    CK06S040  C2006 09 24.42877 01 48 49.78 -16 20 09.6                 ES066699
    CK06S040  C2006 09 24.44457 01 48 49.05 -16 20 05.2          17.1 T ES066703
    CK06S040  C2006 09 24.44509 01 48 49.00 -16 20 05.3                 ES066703
    CK06S040  C2006 09 24.44561 01 48 48.96 -16 20 04.7                 ES066703
    CK06S040  C2006 09 24.44613 01 48 48.90 -16 20 04.9                 ES066703
    CK06S040  C2006 09 26.33625 01 47 01.11 -16 14 13.3          17.8 N ES066850
    CK06S040  C2006 09 26.35129 01 47 00.32 -16 14 11.0          18.3 N ES066850
    CK06S040  C2006 09 26.36633 01 46 59.33 -16 14 08.7          17.8 N ES066850
    CK06S040  C2006 09 26.38141 01 46 58.44 -16 14 05.5          18.0 N ES066850
    CK06S040  C2006 09 26.39644 01 46 57.56 -16 14 01.9          17.9 N ES066850

Observer details:
349 Ageo.  Observer K. Kadota.  0.25-m f/5.0 reflector + CCD.
415 Kambah, near Canberra.  Observer D. Herald.  0.36-m f/3.9
    Schmidt-Cassegrain + CCD.
585 Kiev comet station.  Observer A. Baransky.  0.70-m f/4 reflector + CCD.
673 Table Mountain Observatory, Wrightwood.  Observer J. Young.  0.61-m f/16
    Cassegrain + CCD.
682 Kanab.  Observer E. Sheridan.  0.36-m f/5.5 Schmidt-Cassegrain + CCD.
699 Lowell Observatory-LONEOS.  Observer M. E. Van Ness.  0.59-m LONEOS
    Schmidt + CCD.
703 Catalina Sky Survey.  Observer E. J. Christensen.  Measurers E. C. Beshore,
    E. J. Christensen, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
    R. A. Kowalski, S. M. Larson, R. H. McNaught.  0.68-m Schmidt + CCD.
850 Cordell-Lorenz Observatory, Sewanee.  Observers D. T. Durig, I. H. Gray.
    0.30-m f/9.7 Schmidt-Cassegrain + CCD.

Orbital elements:
    C/2006 S4 (Christensen)
T 2007 Apr. 22.222 TT                                   MPC
q   3.36286              (2000.0)            P               Q
                   Peri.   19.643       +0.754664       -0.531992
                   Node    27.179       +0.430846       -0.039598
e   1.0            Incl.   57.215       +0.494827       +0.845823
From 45 observations 2006 Sept. 22-26.

Ephemeris:
    C/2006 S4 (Christensen)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2006 09 22    01 51.06   -16 26.9    3.012    3.895   147.4     8.0  17.8
2006 10 02    01 41.33   -15 53.9    2.924    3.850   154.1     6.5  17.7
2006 10 12    01 30.48   -15 06.2    2.868    3.806   157.0     5.9  17.6
2006 10 22    01 19.17   -14 01.9    2.843    3.765   154.2     6.6  17.5
2006 11 01    01 08.19   -12 40.4    2.851    3.725   147.2     8.3  17.5
2006 11 11    00 58.26   -11 03.3    2.890    3.686   138.0    10.3  17.5
2006 11 21    00 49.94   -09 13.3    2.956    3.650   128.1    12.3  17.5
2006 12 01    00 43.59   -07 13.4    3.045    3.615   118.0    13.9  17.5

Brian G. Marsden             (C) Copyright 2006 MPC           M.P.E.C. 2006-S66

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