MPEC 2002-H18 : 1999 LU7
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M.P.E.C. 2002-H18 Issued 2002 Apr. 19, 01:11 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1999 LU7
Revision to MPEC 1999-L39
Observations:
J99L07U C2002 04 10.12683 16 01 57.96 -15 33 32.0 21.0 V 493
J99L07U C2002 04 10.13038 16 01 57.91 -15 33 30.8 493
J99L07U HC2002 04 18.45787 15 58 28.92 -14 19 49.5 22.4 V 291
J99L07U HC2002 04 18.46561 15 58 28.66 -14 19 44.7 22.9 V 291
J99L07U HC2002 04 18.47298 15 58 28.37 -14 19 41.3 22.9 V 291
Observer details:
291 LPL/Spacewatch II. Observers T. Gehrels, J. V. Scotti, J. L. Montani,
J. A. Larsen, R. S. McMillan, A. E. Gleason, M. T. Read, A. F. Tubbiolo,
A. S. Descour, T. H. Bressi. 1.8-m Spacewatch telescope.
493 Calar Alto. Observers DANEOPS Team (M. Busch, F. Hormuth, R. Kresken).
Measurers A. Doppler, A. Gnadig. 1.52-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
020410 493 87.7- 5.2+ 020418 291 96.8- 4.1+ MPC 36906 +0.051 day
Orbital elements:
1999 LU7
Epoch 2002 May 6.0 TT = JDT 2452400.5 MPC
M 312.41322 (2000.0) P Q
n 0.32324463 Peri. 146.74721 +0.99030875 +0.10936601
a 2.1027219 Node 207.36153 -0.12697707 +0.96266856
e 0.6275653 Incl. 10.73408 +0.05626183 +0.24760517
P 3.05 H 18.7 G 0.15 U 2
Residuals in seconds of arc
990610 703 1.0+ 0.1+ 990614 402 1.7+ 0.9- 990707 595 1.1+ 1.6-
990610 703 1.3- 0.8+ 990614 402 0.3+ 0.4- 990707 595 0.1+ 0.1-
990610 703 0.5+ 0.1- 990614 402 0.3- 0.1+ 990716 071 1.4+ 1.0+
990610 703 0.1+ 0.5+ 990614 402 0.1+ 0.7+ 990716 071 0.6+ 0.1+
990611 703 0.1+ 0.5+ 990615 426 0.1- 0.5+ 990716 071 0.6+ 0.6+
990611 703 0.4- 0.7- 990615 426 0.4- 0.0 990720 658 0.2+ 0.2+
990611 703 1.0- 0.1+ 990615 426 0.1- 0.2- 990720 658 1.1- 0.3+
990611 703 0.0 0.7+ 990702 413 0.2- 0.3- 990720 658 0.1+ 0.1+
990612 557 0.7+ 0.2- 990702 413 0.2+ 0.2- 990802 658 0.7+ 0.9+
990612 557 0.3+ 0.0 990703 426 0.3+ 1.0- 990802 658 0.2- 0.5+
990613 784 0.8- 0.5+ 990703 426 0.1- 0.5- 990802 658 0.3- 0.3+
990613 784 0.2+ 0.1+ 990703 426 0.6- 0.7- 991104 413 0.6+ 1.0+
990613 784 0.5+ 0.1+ 990705 595 0.5- 0.0 991104 413 0.0 0.5+
990613 046 0.2- 0.8+ 990705 595 0.4- 1.3+ 020410 493 0.6- 0.5+
990613 046 1.1- 0.9+ 990707 402 1.0+ 1.0- 020410 493 0.4- 0.1+
990613 046 1.1- 1.1- 990707 402 (0.3- 2.1-) 020418 291 0.1+ 0.3+
990614 426 0.2- 0.4+ 990707 402 0.8- 0.7- 020418 291 0.5+ 0.5+
990614 426 0.3- 0.1+ 990707 595 0.0 1.1- 020418 291 0.4+ 0.5-
990614 426 0.2- 0.3+ 990707 595 0.2- 0.7-
990614 402 0.4+ 0.4+ 990707 595 0.4+ 0.5-
Ephemeris:
1999 LU7 a,e,i = 2.10, 0.63, 11 q = 0.7831
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2002 04 06 16 02.69 -16 03.7 1.359 2.176 134.0 19.3 22.0
2002 04 16 15 59.80 -14 43.3 1.203 2.103 144.5 16.1 21.6
2002 04 26 15 52.85 -12 57.5 1.067 2.027 155.7 11.8 21.1
2002 05 06 15 41.65 -10 45.3 0.954 1.949 166.5 6.9 20.6
2002 05 16 15 26.60 -08 09.9 0.865 1.868 169.1 5.9 20.2
2002 05 26 15 09.09 -05 22.3 0.803 1.784 158.4 12.1 20.2
2002 06 05 14 51.18 -02 39.4 0.764 1.697 144.8 20.2 20.3
2002 06 15 14 35.18 -00 19.1 0.746 1.608 131.2 28.4 20.3
2002 06 25 14 22.94 +01 26.8 0.740 1.517 118.6 36.0 20.4
2002 07 05 14 15.37 +02 35.7 0.740 1.424 107.2 43.0 20.5
2002 07 15 14 12.64 +03 10.7 0.737 1.329 97.2 49.4 20.5
2002 07 25 14 14.42 +03 18.3 0.728 1.233 88.4 55.4 20.5
2002 08 04 14 20.07 +03 05.6 0.707 1.138 80.6 61.6 20.4
2002 08 14 14 28.86 +02 39.2 0.672 1.046 73.7 68.3 20.3
2002 08 24 14 39.75 +02 05.1 0.619 0.960 67.3 76.2 20.2
Timothy B. Spahr (C) Copyright 2002 MPC M.P.E.C. 2002-H18
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