MPEC 1999-T24 : COMET C/1999 S2 (MCNAUGHT-WATSON)
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M.P.E.C. 1999-T24 Issued 1999 Oct. 6, 20:07 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET C/1999 S2 (MCNAUGHT-WATSON)
Observations:
CJ99S020 C1999 09 28.59281 03 08 21.87 -64 11 21.2 19.9 N 413
CJ99S020 C1999 09 28.59453 03 08 21.82 -64 11 21.4 19.7 N 413
CJ99S020 C1999 09 28.78736 03 08 14.28 -64 11 46.5 18.9 N 413
CJ99S020 C1999 09 28.79369 03 08 13.96 -64 11 47.3 19.4 N 413
CJ99S020 bC1999 09 30.28437 03 07 16.33 -64 14 49.2 834
CJ99S020 C1999 09 30.55030 03 07 05.95 -64 15 20.6 16.7 T 428
CJ99S020 C1999 09 30.55993 03 07 05.62 -64 15 22.7 18.0 N 428
CJ99S020 bC1999 10 02.26471 03 05 56.66 -64 18 32.5 834
CJ99S020 bC1999 10 02.28767 03 05 56.04 -64 18 35.3 834
CJ99S020 bC1999 10 04.20207 03 04 35.42 -64 21 44.6 834
CJ99S020 bC1999 10 04.22422 03 04 34.85 -64 21 45.5 834
CJ99S020 C1999 10 04.75113 03 04 12.11 -64 22 32.0 16.9 T 428
CJ99S020 C1999 10 04.75755 03 04 11.93 -64 22 33.1 17.0 T 428
CJ99S020 C1999 10 05.72162 03 03 30.00 -64 23 55.3 17.8 N 413
CJ99S020 C1999 10 05.72355 03 03 29.91 -64 23 55.2 17.8 N 413
CJ99S020 C1999 10 05.72619 03 03 29.81 -64 23 55.6 17.6 N 413
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
428 Reedy Creek. Observer J. Broughton. 0.25-m f/6.3 Schmidt-Cassegrain
+ CCD.
834 Buenos Aires-AAAA. Observer R. Caprio. Measurer R. Mackintosh.
0.25-m f/6.3 reflector + CCD.
Orbital elements:
C/1999 S2 (McNaught-Watson)
T 1997 Nov. 25.4762 TT Marsden
q 6.491126 (2000.0) P Q
Peri. 223.9176 +0.0803348 +0.4703927
Node 74.4305 -0.4549082 +0.8017729
e 1.0 Incl. 65.8207 -0.8869075 -0.3686339
From 40 observations 1999 Sept. 19-Oct. 5.
Ephemeris:
C/1999 S2 (McNaught-Watson)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
1999 09 29 03 08.11 -64 12.2 7.527 7.875 106.8 7.0 15.3
1999 10 09 03 01.05 -64 27.7 7.581 7.912 105.8 7.0 15.4
1999 10 19 02 52.97 -64 30.7 7.645 7.949 104.2 7.0 15.4
1999 10 29 02 44.38 -64 19.8 7.717 7.986 102.2 7.0 15.5
1999 11 08 02 35.86 -63 54.6 7.797 8.023 99.7 7.0 15.5
1999 11 18 02 27.96 -63 15.3 7.885 8.061 96.7 7.0 15.5
1999 11 28 02 21.12 -62 23.0 7.978 8.099 93.5 7.0 15.6
1999 12 08 02 15.64 -61 19.4 8.077 8.137 90.0 7.0 15.6
1999 12 18 02 11.69 -60 06.6 8.179 8.175 86.3 6.9 15.7
1999 12 28 02 09.30 -58 46.6 8.284 8.214 82.6 6.8 15.7
2000 01 07 02 08.42 -57 21.6 8.388 8.253 78.8 6.7 15.8
2000 01 17 02 08.94 -55 53.7 8.492 8.292 75.0 6.6 15.8
2000 01 27 02 10.71 -54 24.8 8.593 8.332 71.4 6.4 15.9
2000 02 06 02 13.57 -52 56.5 8.690 8.372 68.0 6.3 15.9
2000 02 16 02 17.37 -51 30.1 8.782 8.412 65.0 6.1 16.0
2000 02 26 02 21.94 -50 07.1 8.867 8.452 62.3 6.0 16.0
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-T24
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