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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