• Processing (Info)

  • MPEC 2012-S63 : COMET C/2012 S1 (ISON)

    The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.

    A form allowing access to any MPEC is at the bottom of this page.


    Read MPEC 2012-S62 Read MPEC 2012-S64


    M.P.E.C. 2012-S63                                Issued 2012 Sept. 24, 18:40 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.minorplanetcenter.net/    ISSN 1523-6714
    
                                COMET C/2012 S1 (ISON)
    
    Observations:
        CK12S010  C2011 12 28.35421 07 46 14.59 +31 22 31.6          19.5 TrES063G96
        CK12S010  C2011 12 28.36288 07 46 14.34 +31 22 32.8          19.9 TrES063G96
        CK12S010  C2011 12 28.38015 07 46 13.72 +31 22 34.1          19.8 TrES063G96
        CK12S010  C2012 01 28.45452 07 27 36.942+32 00 02.20         19.9 TLES063F51
        CK12S010  C2012 01 28.46860 07 27 36.424+32 00 02.69         19.8 TLES063F51
        CK12S010  C2012 01 28.49651 07 27 35.397+32 00 04.49         20.6 TLES063F51
        CK12S010  C2012 09 21.05253 08 12 43.09 +27 50 22.1          18.8 TuES063D00
        CK12S010  C2012 09 21.05974 08 12 43.23 +27 50 21.7          19.0 TuES063D00
        CK12S010  C2012 09 21.06577 08 12 43.40 +27 50 21.3          18.9 TuES063D00
        CK12S010  C2012 09 21.07059 08 12 43.46 +27 50 21.6          19.1 TuES063D00
        CK12S010  C2012 09 21.42318 08 12 51.77 +27 50 13.4          17.5 ToES063H01
        CK12S010 |C2012 09 21.43029 08 12 51.94 +27 50 13.4          18.0 TcES063H06
        CK12S010  C2012 09 21.43071 08 12 51.94 +27 50 13.3          17.5 ToES063H01
        CK12S010 |C2012 09 21.43280 08 12 52.00 +27 50 13.4          18.0 TcES063H06
        CK12S010 |C2012 09 21.43531 08 12 52.06 +27 50 13.4          17.9 TcES063H06
        CK12S010  C2012 09 21.43777 08 12 52.11 +27 50 13.2          17.5 ToES063H01
        CK12S010  C2012 09 21.44395 08 12 52.26 +27 50 13.1          17.5 ToES063H01
        CK12S010  C2012 09 21.98694 08 13 04.82 +27 50 01.4          18.7 ToES063188
        CK12S010  C2012 09 21.98973 08 13 04.89 +27 50 01.2          18.5 ToES063188
        CK12S010  C2012 09 21.99253 08 13 04.95 +27 50 01.3          18.6 ToES063188
        CK12S010 KC2012 09 22.14705 08 13 08.50 +27 49 57.3                uES063J95
        CK12S010 KC2012 09 22.15342 08 13 08.66 +27 49 57.3                uES063J95
        CK12S010 KC2012 09 22.15973 08 13 08.80 +27 49 57.2                uES063J95
        CK12S010 KC2012 09 22.17546 08 13 09.15 +27 49 56.9          17.7 TuES063J95
        CK12S010  C2012 09 22.39650 08 13 14.28 +27 49 54.6          18.7 TcES063704
        CK12S010  C2012 09 22.41127 08 13 14.61 +27 49 52.4          18.9 TcES063704
        CK12S010  C2012 09 22.42600 08 13 14.88 +27 49 52.0          18.9 TcES063704
        CK12S010  C2012 09 22.44081 08 13 15.29 +27 49 53.3          19.2 TcES063704
        CK12S010  C2012 09 22.44392 08 13 15.36 +27 49 51.8          17.6 ToES063H01
        CK12S010  C2012 09 22.45076 08 13 15.51 +27 49 51.7          17.6 ToES063H01
        CK12S010 |C2012 09 22.45394 08 13 15.59 +27 49 51.9                cES063H06
        CK12S010  C2012 09 22.45558 08 13 15.69 +27 49 51.9          18.8 TcES063704
        CK12S010 |C2012 09 22.45718 08 13 15.64 +27 49 51.7          17.9 TcES063H06
        CK12S010  C2012 09 22.45733 08 13 15.66 +27 49 51.6          17.6 ToES063H01
        CK12S010 %C2012 09 22.46447 08 13 15.83 +27 49 51.4          17.9 ToES063H06
        CK12S010  C2012 09 22.46641 08 13 15.86 +27 49 51.4          17.7 ToES063H01
        CK12S010 %C2012 09 22.48847 08 13 16.33 +27 49 51.2          17.7 ToES063H06
        CK12S010 KC2012 09 23.39792 08 13 36.97 +27 49 33.4          17.7 TrES063850
        CK12S010 KC2012 09 23.40167 08 13 37.08 +27 49 33.2          17.4 TrES063850
        CK12S010 KC2012 09 23.40542 08 13 37.16 +27 49 33.2          17.6 TrES063850
        CK12S010 KC2012 09 23.41255408 13 37.31 +27 49 32.8          19.9 TvES063H21
        CK12S010 KC2012 09 23.41670 08 13 37.41 +27 49 33.1          17.6 TrES063850
        CK12S010 DC2012 09 23.42119 08 13 37.56 +27 49 32.3          18.0 TuES063H06
        CK12S010 KC2012 09 23.42293008 13 37.55 +27 49 32.8          18.1 TvES063H21
        CK12S010 KC2012 09 23.42831108 13 37.67 +27 49 32.6          18.0 TvES063H21
        CK12S010 KC2012 09 23.43473008 13 37.82 +27 49 32.4          17.9 TvES063H21
        CK12S010 DC2012 09 23.44162 08 13 37.96 +27 49 32.4          18.1 TuES063H06
        CK12S010  C2012 09 23.44221 08 13 38.02 +27 49 32.5          17.7 ToES063H01
        CK12S010  C2012 09 23.44434 08 13 38.01 +27 49 32.3          17.6 TuES063H36
        CK12S010  C2012 09 23.44984 08 13 38.18 +27 49 32.3          17.6 ToES063H01
        CK12S010  C2012 09 23.45685 08 13 38.35 +27 49 32.2          17.6 ToES063H01
        CK12S010  C2012 09 23.46485 08 13 38.52 +27 49 32.1          17.6 ToES063H01
        CK12S010 DC2012 09 23.46520 08 13 38.54 +27 49 31.2          17.9 TuES063H06
        CK12S010  C2012 09 23.46581 08 13 38.52 +27 49 31.9          17.5 TuES063H36
    
    Observer details:
    188 Majdanak.  Observer O. Burhonov.  Measurer A. Novichonok.  1.5-m f/8
        Ritchey-Chretien + CCD.
    704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, G. Spitz,
        R. Brungard, J. Paige, P. Festler, T. McVey, A. Valdivia, C. Gall.  1.0-m
        f/2.15 reflector + CCD.
    850 Cordell-Lorenz Observatory, Sewanee.  Observer D. T. Durig.  0.30-m f/2.5
        Schmidt-Cassegrain + 765x510 CCD.
    D00 ISON-Kislovodsk Observatory.  Observers V. Nevski, A. Novichonok.
        Measurers V. Nevski, V.  Savanevych.  0.4-m f/3 reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers N. Primak, A. Schultz, S. Watters,
        J. Thiel, T. Goggia.  Measurer PS1 Science Consortium.  1.8-m
        Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers J. D. Ahern,
        E. C. Beshore, A. Boattini, A. R. Gibbs, A. D. Grauer, R. E. Hill,
        R. A. Kowalski, S. M. Larson, R. H. McNaught.  1.5-m reflector + CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
    H06 RAS Observatory, Mayhill.  Observers H. Sato, E. Guido, G. Sostero,
        N. Howes, N. E. Pritchett.  0.25-m f/3.4 astrograph + CCD, 0.25-m f/3.4
        reflector + CCD, 0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers T. Vorobjov, L. Buzzi, S. Foglia.  0.61-m f/4.0 astrograph + CCD.
    H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
        C/2012 S1 (ISON)
    Epoch 2013 Dec. 14.0 TT = JDT 2456640.5
    T 2013 Nov. 28.87041 TT                                 MPC
    q   0.0124527            (2000.0)            P               Q
    z  +0.0000029      Peri.  345.56137     +0.31509387     +0.51287068
     +/-0.0002325      Node   295.65952     -0.75896421     -0.36901142
    e   1.0000000      Incl.   62.36426     -0.56981504     +0.77510918
    From 54 observations 2011 Dec. 28-2012 Sept. 23, mean residual 0".3.
    
    Ephemeris:
        C/2012 S1 (ISON)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    2012 08 25    08 00 13.1 +28 10 21   7.3403  6.5526    36.3     5.2  18.5
    ...
    2012 09 09    08 07 34.4 +27 57 06   7.0264  6.4094    48.9     6.8  18.3
    ...
    2012 09 17    08 11 04.8 +27 52 11   6.8423  6.3324    55.8     7.5  18.2
    ...
    2012 09 23    08 13 27.9 +27 49 41   6.6975  6.2743    61.1     8.0  18.1
    2012 09 24    08 13 50.4 +27 49 23   6.6729  6.2646    62.0     8.1  18.1
    2012 09 25    08 14 12.4 +27 49 07   6.6482  6.2548    62.9     8.2  18.1
    ...
    2012 10 01    08 16 15.6 +27 48 12   6.4972  6.1964    68.2     8.6  18.0
    ...
    2012 10 09    08 18 32.9 +27 49 04   6.2901  6.1180    75.6     9.1  17.9
    ...
    2012 10 24    08 21 10.2 +27 58 07   5.8902  5.9697    89.8     9.6  17.6
    
    Gareth V. Williams           (C) Copyright 2012 MPC           M.P.E.C. 2012-S63
    

    Read MPEC 2012-S62 Read MPEC 2012-S64


    MPEC number:

    Enter an MPEC number in one of the following forms:

    • 1997-B01 (the full form)
    • J97B01 (the packed version of the full form)
    • B01 (the abbreviated form)