MPEC 2008-J69 : COMET C/2008 J4 (McNAUGHT)

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M.P.E.C. 2008-J69                                Issued 2008 May 13, 17:22 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/2008 J4 (McNAUGHT)

Observations:
    CK08J040  C2008 05 10.79355 23 26 34.26 -07 36 56.3          16.5 T EJ069E12
    CK08J040  C2008 05 10.79889 23 26 35.26 -07 36 30.0          16.5 T EJ069E12
    CK08J040  C2008 05 10.80414 23 26 36.34 -07 36 04.2          15.6 T EJ069E12
    CK08J040  C2008 05 10.80946 23 26 37.60 -07 35 38.9          17.0 T EJ069E12
    CK08J040  C2008 05 11.75559 23 30 05.65 -06 16 53.3          17   T EJ069E12
    CK08J040  C2008 05 11.81381 23 30 18.41 -06 11 56.9          16.7 T EJ069E12
    CK08J040  C2008 05 12.60429 23 33 19.97 -05 03 02.1                 EJ069F85
    CK08J040  C2008 05 12.61878 23 33 23.40 -05 01 45.6                 EJ069F85
    CK08J040  C2008 05 12.63332 23 33 26.84 -05 00 25.9                 EJ069F85
    CK08J040  C2008 05 12.76170 23 33 56.59 -04 49 02.5          16.3 T EJ069E12
    CK08J040  C2008 05 13.60455 23 37 18.25 -03 31 56.4                 EJ069F85
    CK08J040  C2008 05 13.62570 23 37 23.50 -03 29 59.7                 EJ069F85

Observer details:
E12 Siding Spring Survey.  Observer R. H. McNaught.  0.5-m Uppsala Schmidt
    + CCD.
F85 Tiki Observatory, Punaauia.  Observer N. Teamo.  Measurer J. C. Pelle.
    0.41-m f/8.0 Ritchey-Chretien + CCD.

Orbital elements:
    C/2008 J4 (McNaught)
T 2008 June 19.441 TT                                   MPC
q   0.44485              (2000.0)            P               Q
                   Peri.   93.709       +0.005226       -0.328398
                   Node   289.109       -0.332321       +0.890284
e   1.0            Incl.   88.396       +0.943152       +0.315513
From 11 observations 2008 May 10-13.

Ephemeris:
    C/2008 J4 (McNaught)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2008 05 04    23 05.02   -15 27.5    1.167    1.141    62.8    51.8  15.9
2008 05 09    23 20.34   -09 56.6    1.038    1.052    61.8    57.8  15.3
2008 05 14    23 38.92   -02 54.8    0.921    0.961    59.5    64.9  14.6
2008 05 19    00 02.44   +06 01.9    0.822    0.870    55.5    73.4  14.0
2008 05 24    00 33.58   +16 59.7    0.753    0.779    49.8    82.7  13.3
2008 05 29    01 16.20   +29 06.7    0.726    0.690    42.9    91.4  12.7
2008 06 03    02 14.16   +40 05.6    0.752    0.606    36.4    96.1  12.2
2008 06 08    03 25.96   +47 11.9    0.829    0.531    31.5    93.9  11.8
2008 06 13    04 38.83   +49 17.0    0.949    0.475    27.7    84.0  11.6

Brian G. Marsden             (C) Copyright 2008 MPC           M.P.E.C. 2008-J69

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