• MPC Preparation (Info)

  • MPEC 2007-U65 : COMET C/2007 S2 (LEMMON)

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    Read MPEC 2007-U64 Read MPEC 2007-U66


    M.P.E.C. 2007-U65                                Issued 2007 Oct. 23, 16:37 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 S2 (LEMMON)
    
    Observations:
        CK07S020  C2007 10 08.42844 08 29 15.67 +19 11 02.5          18.9 T EU065704
        CK07S020  C2007 10 08.43966 08 29 16.01 +19 10 59.8          19.2 T EU065704
        CK07S020  C2007 10 08.45090 08 29 16.40 +19 10 58.3          19.1 T EU065704
        CK07S020  C2007 10 08.46211 08 29 16.74 +19 10 55.4          19.2 T EU065704
        CK07S020  C2007 10 08.47334 08 29 17.06 +19 10 53.8          19.3 T EU065704
        CK07S020  C2007 10 10.04113 08 30 05.33 +19 05 53.3          17.8 N EU065585
        CK07S020  C2007 10 10.04919 08 30 05.60 +19 05 48.9          17.8 N EU065585
        CK07S020  C2007 10 10.05645 08 30 05.83 +19 05 43.0          18.0 N EU065585
        CK07S020  C2007 10 10.06369 08 30 06.32 +19 05 39.6          17.8 N EU065585
        CK07S020  C2007 10 11.44992 08 30 47.65 +19 01 16.1          19.6 T EU065704
        CK07S020  C2007 10 11.46118 08 30 47.94 +19 01 13.7          19.5 T EU065704
        CK07S020  C2007 10 11.47245 08 30 48.23 +19 01 12.1          19.6 T EU065704
        CK07S020  C2007 10 13.45738 08 31 46.12 +18 54 53.6          19.2 T EU065703
        CK07S020  C2007 10 13.46501 08 31 46.23 +18 54 51.6          19.3 T EU065703
        CK07S020  C2007 10 13.47262 08 31 46.48 +18 54 49.8          19.1 T EU065703
        CK07S020  C2007 10 13.48022 08 31 46.74 +18 54 48.4          19.3 T EU065703
        CK07S020  C2007 10 22.15386 08 35 34.37 +18 27 59.7                 EU065204
        CK07S020  C2007 10 22.18621 08 35 35.12 +18 27 53.8          18.5 N EU065204
    
    Observer details:
    204 Schiaparelli Observatory.  Observers L. Buzzi, M. Marinelli, V. Di Michele.
        Measurer L. Buzzi.  0.36-m f/7.87 Schmidt-Cassegrain + CCD, 0.60-m f/4.64
        reflector + CCD.
    585 Kiev comet station.  Observer A. Baransky.  0.7-m f/4 reflector + CCD.
    703 Catalina Sky Survey.  Observer A. R. Gibbs.  Measurers E. C. Beshore,
        A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski,
        S. M. Larson.  0.68-m Schmidt + CCD.
    704 Lincoln Laboratory ETS, New Mexico.  Observers M. Bezpalko, D. Torres, R.
        Kracke, G. Spitz, J. Kistler.  Measurers J. Stuart, S. Scruggs.  1.0-m
        f/2.15 reflector + CCD.
    
    Orbital elements:
        C/2007 S2 (Lemmon)
    T 2008 Sept. 16.872 TT                                  MPC
    q   5.55240              (2000.0)            P               Q
    n   0.022441       Peri.  210.654       -0.818062       -0.512879
    a  12.44821        Node   296.248       +0.568762       -0.654297
    e   0.55396        Incl.   16.868       +0.085341       -0.555743
    P  43.9
    From 81 observations 2007 Sept. 25-Oct. 22.
    
    Ephemeris:
        C/2007 S2 (Lemmon)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    2007 10 17    08 33.40   +18 43.8    5.981    5.840    77.1     9.6  18.0
    2007 10 27    08 37.38   +18 13.7    5.807    5.824    86.1     9.8  18.0
    2007 11 06    08 40.37   +17 46.2    5.633    5.808    95.2     9.8  17.9
    2007 11 16    08 42.26   +17 21.5    5.461    5.793   104.8     9.5  17.8
    2007 11 26    08 42.99   +17 00.2    5.297    5.778   114.6     8.9  17.7
    2007 12 06    08 42.54   +16 42.5    5.144    5.763   124.7     8.1  17.7
    2007 12 16    08 40.92   +16 28.5    5.009    5.749   135.2     6.9  17.6
    2007 12 26    08 38.23   +16 18.0    4.894    5.735   145.9     5.5  17.5
    
         Further observations of this comet are desirable.
    
    Brian G. Marsden             (C) Copyright 2007 MPC           M.P.E.C. 2007-U65
    

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