MPEC 2006-R41 : COMET C/2006 R1 (SIDING SPRING)
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M.P.E.C. 2006-R41 Issued 2006 Sept. 10, 23:11 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.
Supported in part by the Brinson Foundation
Supported in part by the TABASGO Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/2006 R1 (SIDING SPRING)
Observations:
CK06R010 C2006 09 08.27285 21 11 25.11 -56 27 36.4 18.4 T ER041F84
CK06R010 C2006 09 08.35523 21 10 15.67 -56 27 48.8 ER041F84
CK06R010 C2006 09 10.42482 20 42 47.25 -56 19 30.7 18.3 T ER041F84
CK06R010 C2006 09 10.44112 20 42 34.86 -56 19 20.0 ER041F84
Observer details:
F84 Hibiscus Observatory, Punaauia. Observers N. Teamo, S. F. Hoenig.
Measurer S. F. Hoenig. 0.35-m f/3.88 Schmidt-Cassegrain + CCD.
Orbital elements:
C/2006 R1 (Siding Spring)
T 2006 Sept. 3.374 TT MPC
q 1.67438 (2000.0) P Q
n 0.061845 Peri. 249.333 +0.826038 -0.521196
a 6.33288 Node 218.813 -0.298165 -0.727085
e 0.73561 Incl. 159.987 -0.478286 -0.446880
P 15.9
From 22 observations 2006 Sept. 1-10.
Ephemeris:
C/2006 R1 (Siding Spring)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2006 09 02 22 44.40 -53 38.0 0.805 1.674 134.4 25.5 17.8
2006 09 07 21 29.56 -56 18.5 0.865 1.675 126.7 28.8 17.9
2006 09 12 20 23.81 -55 58.6 0.953 1.677 117.7 32.1 18.1
2006 09 17 19 35.05 -54 01.9 1.063 1.682 108.8 34.5 18.4
2006 09 22 19 01.44 -51 35.0 1.185 1.688 100.5 35.8 18.6
2006 09 27 18 38.60 -49 10.7 1.316 1.696 93.0 36.2 18.9
2006 10 02 18 22.97 -47 00.8 1.452 1.706 86.1 35.8 19.1
2006 10 07 18 12.18 -45 07.9 1.588 1.717 79.6 34.9 19.4
2006 10 12 18 04.69 -43 30.9 1.724 1.731 73.6 33.6 19.6
2006 10 17 17 59.56 -42 07.9 1.858 1.746 67.8 31.9 19.8
2006 10 22 17 56.14 -40 56.6 1.988 1.763 62.3 30.0 20.0
2006 10 27 17 53.99 -39 55.3 2.114 1.781 57.1 27.9 20.1
2006 11 01 17 52.80 -39 02.2 2.234 1.801 52.0 25.7 20.3
2006 11 06 17 52.34 -38 16.1 2.348 1.822 47.0 23.4 20.5
2006 11 11 17 52.46 -37 35.8 2.455 1.844 42.1 21.1 20.6
2006 11 16 17 53.02 -37 00.4 2.555 1.868 37.4 18.8 20.8
2006 11 21 17 53.94 -36 29.3 2.647 1.893 32.8 16.4 20.9
It is still possible that the orbital period P is somewhat longer than
the best-fit value shown above (which would be the shortest for a comet having
a retrograde orbit).
Brian G. Marsden (C) Copyright 2006 MPC M.P.E.C. 2006-R41
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