• MPC Preparation (Info)

  • MPEC 2007-K42 : COMET C/2007 JA21 (LINEAR)

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    M.P.E.C. 2007-K42                                Issued 2007 May 24, 20:19 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 JA21 (LINEAR)
    
    Observations:
        CK07J21A  C2007 05 18.96869 17 30 15.10 +53 00 55.2          18.6 N EK042213
        CK07J21A  C2007 05 18.97098 17 30 14.92 +53 00 55.0          18.6 N EK042213
        CK07J21A  C2007 05 18.97633 17 30 14.50 +53 00 54.5          18.6 N EK042213
        CK07J21A  C2007 05 19.06193 17 30 07.38 +53 00 47.5          18.8 N EK042A03
        CK07J21A  C2007 05 19.07677 17 30 06.29 +53 00 45.9          18.5 N EK042A03
        CK07J21A  C2007 05 19.08785 17 30 05.44 +53 00 44.8          18.4 N EK042A03
        CK07J21A  C2007 05 19.89873717 29 00.04 +52 59 23.3          18.0 N EK042157
        CK07J21A  C2007 05 19.94081 17 28 56.61 +52 59 19.4          18.5 T EK042215
        CK07J21A  C2007 05 19.94187 17 28 56.52 +52 59 19.3          18.6 T EK042215
        CK07J21A  C2007 05 19.94292 17 28 56.43 +52 59 19.1          18.4 T EK042215
        CK07J21A  C2007 05 21.02560 17 27 28.34 +52 57 17.6          19.1 N EK042118
        CK07J21A  C2007 05 21.03087 17 27 27.70 +52 57 17.1          18.4 N EK042118
        CK07J21A  C2007 05 23.91777 17 23 31.33 +52 50 32.4          19.3 N EK042213
        CK07J21A  C2007 05 23.92012 17 23 31.13 +52 50 32.1          19.2 N EK042213
        CK07J21A  C2007 05 23.92248 17 23 30.94 +52 50 31.7          19.2 N EK042213
    
    Observer details:
    118 Modra.  Observer L. Kornos.  0.6-m f/5.5 reflector + CCD.
    157 Frasso Sabino.  Observers R. Haver, R. Gorelli, M. Calabresi, F. Anzellini,
        M. Panella.  Measurer R. Haver.  0.37-m f/7.1 Cassegrain + CCD.
    213 Observatorio Montcabre.  Observer R. Naves.  Measurer M. Campas.  0.30-m
        f/10 Schmidt-Cassegrain + CCD.
    215 Buchloe.  Observer W. Hasubick.  0.44-m f/4.6 reflector + CCD.
    A03 Torredembarra.  Observer J. Moreno.  0.35-m Schmidt-Cassegrain + CCD.
    
    Orbital elements:
        C/2007 JA21 (LINEAR)
    T 2006 Nov. 12.505 TT                                   MPC
    q   5.36260              (2000.0)            P               Q
                       Peri.   93.484       -0.027929       -0.412873
                       Node    65.556       -0.446646       -0.809593
    e   1.0            Incl.   89.825       +0.894275       -0.417246
    From 59 observations 2007 May 11-23.
    
    Ephemeris:
        C/2007 JA21 (LINEAR)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    2007 05 20    17 28.86   +52 59.2    5.212    5.541   103.8    10.2  19.0
    2007 05 30    17 15.12   +52 30.0    5.210    5.560   105.1    10.1  19.0
    2007 06 09    17 01.42   +51 37.1    5.223    5.580   105.5    10.1  19.1
    2007 06 19    16 48.49   +50 21.0    5.250    5.601   105.1    10.1  19.1
    2007 06 29    16 36.93   +48 43.8    5.294    5.623   103.7    10.1  19.1
    2007 07 09    16 27.13   +46 49.0    5.354    5.645   101.5    10.2  19.2
    2007 07 19    16 19.28   +44 40.7    5.429    5.668    98.5    10.2  19.2
    2007 07 29    16 13.42   +42 23.1    5.518    5.693    94.8    10.2  19.3
    
         Further observations of this comet are desirable.
    
    Brian G. Marsden             (C) Copyright 2007 MPC           M.P.E.C. 2007-K42
    

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