MPEC 2000-P13: 1999 ON4
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M.P.E.C. 2000-P13 Issued 2000 Aug. 3, 15:54 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
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1999 ON4
Revision to MPEC 1999-W12
Observations:
J99O04N 6C2000 07 31.12648 21 17 24.58 -15 59 00.3 23.0 R 809
J99O04N 6C2000 07 31.19929 21 17 24.23 -15 59 02.0 23.2 R 809
J99O04N 6C2000 07 31.28951 21 17 23.79 -15 59 03.7 809
J99O04N 6C2000 08 02.29811 21 17 14.16 -15 59 49.7 809
J99O04N 6C2000 08 02.32957 21 17 14.00 -15 59 50.4 23.4 R 809
J99O04N 6C2000 08 02.36121 21 17 13.84 -15 59 51.1 23.6 R 809
Observer details:
809 European Southern Observatory, La Silla. Observers B. Gladman, J.-M.
Petit. 2.2-m reflector + CCD, 3.6-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees) and reference
000731 809 0.05- 0.02- 000802 809 0.05- 0.02- MPC 36908
Orbital elements:
1999 ON4
Epoch 2000 Sept. 13.0 TT = JDT 2451800.5 Marsden
M 359.38197 (2000.0) P Q
n 0.00353105 Peri. 184.40602 +0.73685507 +0.67483104
a 42.7103654 Node 133.06553 -0.61855419 +0.69720161
e 0.0421981 Incl. 3.18506 -0.27282838 +0.24189457
P 279 H 7.7 G 0.15 U 7
Residuals in seconds of arc
990719 568 0.1- 0.1- 990811 675 0.2- 0.1- 000731 809 0.0 0.3+
990719 568 0.1+ 0.2+ 990811 675 0.1+ 0.2- 000802 809 0.1+ 0.1-
990719 568 0.1- 0.2+ 000731 809 0.0 0.0 000802 809 0.0 0.0
990811 675 0.2+ 0.0 000731 809 0.0 0.1- 000802 809 0.1- 0.0
Ephemeris:
1999 ON4 a,e,i = 42.71, 0.04, 3 q = 40.908
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 07 25 21 17.89 -15 56.7 39.925 40.908 165.4 0.4 23.8
2000 08 04 21 17.10 -16 00.5 39.897 40.908 175.2 0.1 23.8
2000 08 14 21 16.29 -16 04.3 39.899 40.908 175.0 0.1 23.8
2000 08 24 21 15.50 -16 08.0 39.930 40.908 165.2 0.4 23.8
2000 09 03 21 14.75 -16 11.5 39.989 40.908 155.4 0.6 23.9
2000 09 13 21 14.07 -16 14.7 40.075 40.908 145.5 0.8 23.9
2000 09 23 21 13.49 -16 17.4 40.185 40.908 135.6 1.0 23.9
2000 10 03 21 13.03 -16 19.6 40.317 40.908 125.6 1.1 24.0
2000 10 13 21 12.70 -16 21.1 40.466 40.908 115.7 1.3 24.0
2000 10 23 21 12.53 -16 21.9 40.627 40.908 105.7 1.3 24.0
2000 11 02 21 12.52 -16 22.1 40.797 40.908 95.7 1.4 24.0
2000 11 12 21 12.67 -16 21.4 40.970 40.908 85.7 1.4 24.0
2000 11 22 21 12.99 -16 20.1 41.140 40.908 75.7 1.3 24.0
2000 12 02 21 13.48 -16 18.0 41.303 40.908 65.7 1.3 24.0
2000 12 12 21 14.10 -16 15.3 41.454 40.908 55.7 1.1 24.0
2000 12 22 21 14.87 -16 11.9 41.588 40.908 45.8 1.0 24.0
2001 01 01 21 15.74 -16 08.1 41.702 40.908 35.8 0.8 24.0
Brian G. Marsden (C) Copyright 2000 MPC M.P.E.C. 2000-P13
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