• MPC Preparation (Info)

  • MPEC 2017-M11 : COMET C/2017 K4 (ATLAS)

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    M.P.E.C. 2017-M11                                Issued 2017 June 18, 16:14 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
        on behalf of Division F 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 https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                COMET C/2017 K4 (ATLAS)
    
    Observations:
        CK17K040 3C2017 06 12.31437 17 01 21.31 -38 19 44.6          16.4 TqEM011W88
        CK17K040 3C2017 06 12.32034 17 01 21.04 -38 19 43.0          16.4 TqEM011W88
        CK17K040 3C2017 06 12.32597 17 01 20.85 -38 19 41.6          16.5 TqEM011W88
        CK17K040  C2017 06 14.88813 16 59 37.32 -38 08 43.1          16.8 TqEM011Y00
        CK17K040  C2017 06 14.90173 16 59 36.67 -38 08 39.3          16.9 TqEM011Y00
        CK17K040  C2017 06 14.91533 16 59 35.93 -38 08 34.5          17.1 TqEM011Y00
    
    Observer details:
    W88 Slooh.com Chile Observatory, La Dehesa.  Observer B. Lutkenhoner.  0.35-m
        f/11 Schmidt-Cassegrain + CCD.
    Y00 SONEAR Observatory, Oliveira.  Observers C. Jacques, E. Pimentel,
        J. Barros.  Measurer C. Jacques.  0.45-m f/2.9 reflector + CCD.
    
    Orbital elements:
        C/2017 K4 (ATLAS)
    Epoch 2018 Jan. 2.0 TT = JDT 2458120.5
    T 2018 Jan. 8.09447 TT                                  MPCW
    q   2.6481962            (2000.0)            P               Q
    n   0.00659673     Peri.   15.12195     +0.68525400     +0.68357112
    a  28.1568149      Node   298.89457     -0.69445133     +0.50928977
    e   0.9059483      Incl.   16.68117     -0.21946369     +0.52283311
    P 149
    From 121 observations 2017 May 26-June 14, mean residual 0".3.
    
        C/2017 K4 (ATLAS)
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5
    T 2018 Jan. 8.08501 TT                                  MPCW
    q   2.6482238            (2000.0)            P               Q
    n   0.00660063     Peri.   15.11858     +0.68521565     +0.68360932
    a  28.1457335      Node   298.89473     -0.69447975     +0.50925000
    e   0.9059103      Incl.   16.68124     -0.21949346     +0.52282190
    P 149
    From 121 observations 2017 May 26-June 14, mean residual 0".3.
    
    Ephemeris:
        C/2017 K4 (ATLAS)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    2017 05 19    17 16 16.3 -39 18 14   2.6591  3.5835   151.9     7.6  17.7
    ...
    2017 06 03    17 07 37.0 -38 51 55   2.5001  3.4814   162.6     5.0  17.4
    ...
    2017 06 11    17 02 14.2 -38 25 08   2.4394  3.4279   164.3     4.6  17.3
    ...
    2017 06 17    16 58 09.5 -37 59 13   2.4050  3.3884   162.7     5.1  17.2
    2017 06 18    16 57 29.3 -37 54 25   2.4002  3.3818   162.2     5.3  17.2
    2017 06 19    16 56 49.4 -37 49 30   2.3956  3.3753   161.7     5.4  17.2
    ...
    2017 06 25    16 52 59.6 -37 17 26   2.3739  3.3363   157.6     6.7  17.1
    ...
    2017 07 03    16 48 31.6 -36 28 46   2.3593  3.2852   150.9     8.6  17.0
    ...
    2017 07 18    16 43 10.9 -34 45 57   2.3716  3.1920   137.1    12.5  16.9
    
    Gareth V. Williams           (C) Copyright 2017 MPC           M.P.E.C. 2017-M11
    

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