• Processing (Info)

    • MPEC 2008-J23 : COMET 6P/D'ARREST

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    M.P.E.C. 2008-J23                                Issued 2008 May 3, 15:05 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 6P/D'ARREST

Observations:
0006P         C2008 04 26.38736 18 27 04.75 +06 55 02.1          18.9 T EJ023688
0006P         C2008 04 26.39231 18 27 05.06 +06 55 04.8                 EJ023688
0006P         C2008 04 26.39532 18 27 05.32 +06 55 07.4                 EJ023688
0006P         C2008 04 26.39733 18 27 05.48 +06 55 08.7                 EJ023688
0006P         C2008 04 29.37494 18 31 05.79 +07 30 01.2          19.5 N EJ023G89
0006P         C2008 04 29.39871 18 31 07.64 +07 30 18.1          19.3 N EJ023G89
0006P         C2008 04 30.38241 18 32 25.82 +07 41 53.2          19.2 N EJ023G89
0006P         C2008 04 30.40575 18 32 27.61 +07 42 09.7          19.6 N EJ023G89
0006P         C2008 04 30.42819 18 32 29.33 +07 42 25.6          19.5 N EJ023G89

Observer details:
688 Lowell Observatory, Anderson Mesa Station.  Observer W. T. Ryle.  Measurer
    L. H. Wasserman.  1.8-m Perkins telescope + CCD.
G89 Kachina Observatory, Flagstaff.  Observer J. Hobart.  0.36-m f/11.2
    Schmidt-Cassegrain + CCD.

Orbital elements:
   6P/d'Arrest
Epoch 2008 Aug. 2.0 TT = JDT 2454680.5
T 2008 Aug. 14.95983 TT                                 MPC
q   1.3535073            (2000.0)            P               Q
n   0.15079876     Peri.  178.12009     +0.73325600     +0.64356964
a   3.4957272      Node   138.93575     -0.62812237     +0.76470318
e   0.6128109      Incl.   19.51483     -0.26038036     -0.03235986
P   6.54
From 334 observations 1995-2008, mean residual 0".68.  Nongravitational
   parameters A1 = +0.81 +/- 0.03, A2 = +0.0982 +/- 0.0008.

Ephemeris:
   6P/d'Arrest
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2008 04 24    18 23.80   +06 27.4    1.188    1.837   113.4    30.2  18.4  19.5
2008 05 04    18 37.12   +08 24.6    1.060    1.770   117.7    30.3  17.5  19.2
2008 05 14    18 49.32   +10 20.9    0.941    1.705   121.7    30.3  16.6  18.8
2008 05 24    19 00.29   +12 07.3    0.832    1.643   125.7    30.1  15.7  18.5
2008 06 03    19 09.92   +13 32.1    0.733    1.585   129.5    29.6  14.8  18.1
2008 06 13    19 18.20   +14 18.7    0.643    1.531   133.5    28.7  13.9  17.7
2008 06 23    19 25.39   +14 06.3    0.562    1.483   137.9    27.3  13.1  17.3
2008 07 03    19 31.85   +12 28.8    0.492    1.440   143.1    25.1  12.3  16.9
2008 07 13    19 38.37   +08 56.0    0.433    1.406   149.2    21.7  11.6  16.5
2008 07 23    19 46.17   +03 04.9    0.388    1.379   156.1    17.4  11.0  16.1
2008 08 02    19 56.47   -05 02.4    0.360    1.362   161.8    13.4  10.6  15.7
2008 08 12    20 10.56   -14 31.5    0.355    1.354   161.3    13.9  10.5  15.7
2008 08 22    20 29.05   -23 41.6    0.372    1.356   154.3    18.9  10.6  16.0
2008 09 01    20 51.46   -31 02.6    0.410    1.368   145.7    24.6  11.0  16.4
2008 09 11    21 16.53   -35 56.3    0.467    1.389   138.0    29.0  11.6  16.8
2008 09 21    21 42.51   -38 31.7    0.537    1.419   131.7    31.9  12.2  17.3
2008 10 01    22 07.86   -39 16.5    0.619    1.457   126.5    33.6  13.0  17.7
2008 10 11    22 31.82   -38 39.2    0.711    1.502   122.0    34.3  13.8  18.1
2008 10 21    22 54.09   -37 04.8    0.813    1.552   117.9    34.5  14.7  18.4
2008 10 31    23 14.76   -34 51.6    0.925    1.608   113.9    34.4  15.6  18.8
2008 11 10    23 34.15   -32 13.2    1.045    1.668   110.0    33.9  16.5  19.1
2008 11 20    23 52.52   -29 20.1    1.175    1.731   106.0    33.3  17.4  19.4
2008 11 30    00 10.11   -26 19.3    1.313    1.797   101.8    32.5  18.3  19.7
2008 12 10    00 27.18   -23 16.0    1.460    1.865    97.5    31.6  19.1  20.0
2008 12 20    00 43.85   -20 14.3    1.614    1.934    93.0    30.5  20.0  20.3
2008 12 30    01 00.25   -17 16.7    1.774    2.004    88.4    29.4        20.5
2009 01 09    01 16.48   -14 25.3    1.940    2.075    83.6    28.1        20.8
2009 01 19    01 32.57   -11 41.5    2.111    2.146    78.6    26.7        21.0
2009 01 29    01 48.59   -09 06.1    2.284    2.217    73.6    25.2        21.2
2009 02 08    02 04.56   -06 39.8    2.458    2.289    68.5    23.6        21.4
2009 02 18    02 20.48   -04 23.2    2.631    2.360    63.3    22.0        21.5
2009 02 28    02 36.38   -02 16.3    2.803    2.430    58.1    20.3        21.7
2009 03 10    02 52.24   -00 19.5    2.971    2.500    52.9    18.5        21.8
2009 03 20    03 08.04   +01 27.2    3.134    2.570    47.6    16.6        21.9
2009 03 30    03 23.78   +03 03.8    3.290    2.638    42.3    14.8        22.0
2009 04 09    03 39.44   +04 30.4    3.437    2.707    37.1    12.9        22.1
2009 04 19    03 54.97   +05 47.0    3.575    2.774    31.9    11.0        22.2

Brian G. Marsden             (C) Copyright 2008 MPC           M.P.E.C. 2008-J23

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