MPEC 2000-P17: 1999 OJ4
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M.P.E.C. 2000-P17 Issued 2000 Aug. 3, 17:38 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 OJ4
Revision to MPEC 1999-W12
Observations:
J99O04J 6C2000 07 31.11506 21 17 06.94 -16 27 37.3 809
J99O04J 6C2000 07 31.18342 21 17 06.58 -16 27 39.2 22.6 R 809
J99O04J 6C2000 07 31.26985 21 17 06.13 -16 27 41.2 22.8 R 809
J99O04J 6C2000 08 02.27861 21 16 55.81 -16 28 30.9 22.9 R 809
J99O04J 6C2000 08 02.28501 21 16 55.78 -16 28 31.0 809
J99O04J 6C2000 08 02.32265 21 16 55.58 -16 28 31.9 22.9 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 0.10- 0.03- 000802 809 0.10- 0.03- MPC 36908
Orbital elements:
1999 OJ4
The following assumed 2:3 Neptune-resonance orbital elements
keep the object more than 10 AU from Neptune over a 14 000-year period.
Epoch 2000 Sept. 13.0 TT = JDT 2451800.5 Marsden
M 71.98200 (2000.0) P Q
n 0.00398450 Peri. 98.83242 -0.68857623 +0.72305195
a 39.4051735 Node 127.49920 -0.68971662 -0.62945706
e 0.1602405 Incl. 3.99731 -0.22395036 -0.28456928
P 247 H 7.3 G 0.15
Residuals in seconds of arc
990718 568 0.1- 0.0 990811 675 0.0 0.0 000802 809 0.3- 0.3-
990718 568 0.0 0.1+ 000731 809 0.4+ 0.3+ 000802 809 0.3- 0.2-
990811 675 0.1+ 0.1- 000731 809 0.3+ 0.1+ 000802 809 0.3- 0.2-
990811 675 0.0 0.0 000731 809 0.3+ 0.2+
Ephemeris:
1999 OJ4 a,e,i = 39.41, 0.16, 4 q = 33.091
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 07 25 21 17.63 -16 25.2 37.416 38.401 165.6 0.4 23.2
2000 08 04 21 16.78 -16 29.2 37.394 38.405 175.3 0.1 23.1
2000 08 14 21 15.92 -16 33.3 37.401 38.410 174.8 0.1 23.1
2000 08 24 21 15.08 -16 37.3 37.437 38.414 165.0 0.4 23.2
2000 09 03 21 14.28 -16 41.0 37.501 38.418 155.1 0.6 23.2
2000 09 13 21 13.56 -16 44.3 37.592 38.423 145.2 0.9 23.2
2000 09 23 21 12.94 -16 47.1 37.708 38.427 135.3 1.1 23.3
2000 10 03 21 12.45 -16 49.3 37.844 38.432 125.4 1.2 23.3
2000 10 13 21 12.11 -16 50.9 37.998 38.436 115.4 1.3 23.3
2000 10 23 21 11.93 -16 51.7 38.164 38.441 105.4 1.4 23.3
2000 11 02 21 11.92 -16 51.7 38.338 38.445 95.4 1.5 23.3
2000 11 12 21 12.10 -16 50.9 38.515 38.450 85.5 1.5 23.3
2000 11 22 21 12.44 -16 49.4 38.690 38.454 75.5 1.4 23.4
2000 12 02 21 12.96 -16 47.1 38.857 38.458 65.5 1.3 23.4
2000 12 12 21 13.63 -16 44.1 39.012 38.463 55.5 1.2 23.4
2000 12 22 21 14.45 -16 40.5 39.150 38.467 45.5 1.0 23.3
2001 01 01 21 15.39 -16 36.3 39.267 38.472 35.6 0.9 23.3
Brian G. Marsden (C) Copyright 2000 MPC M.P.E.C. 2000-P17
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