MPEC 2000-L42 : 1997 US2
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M.P.E.C. 2000-L42 Issued 2000 June 13, 16:48 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
1997 US2
Revision to MPEC 1997-W03
Observations:
J97U02S HC2000 06 09.43361 22 03 06.48 -17 46 19.1 20.9 V 691
J97U02S HC2000 06 09.43836 22 03 04.88 -17 46 28.6 21.0 V 691
J97U02S HC2000 06 09.44301 22 03 03.44 -17 46 39.9 21.7 V 691
J97U02S 1C2000 06 12.75106 21 46 36.314-19 38 55.72 19.7 R 413
J97U02S 1C2000 06 12.75309 21 46 35.691-19 38 59.57 19.5 R 413
J97U02S 1C2000 06 12.75514 21 46 35.054-19 39 03.78 19.5 R 413
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer T. Gehrels. 0.9-m Spacewatch
telescope.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
000609 691 1.8+ 2.4- 000612 413 7.4- 5.5- MPC 31146 +0.0060 day
Orbital elements:
1997 US2 PHA 0.005
Epoch 2000 Sept. 13.0 TT = JDT 2451800.5 Williams
M 72.38995 (2000.0) P Q
n 0.45491602 Peri. 99.87902 -0.96958015 -0.23948141
a 1.6743589 Node 66.27923 +0.19727300 -0.88696783
e 0.6605728 Incl. 3.16995 +0.14490584 -0.39488825
P 2.17 H 19.8 G 0.15 U 2
Residuals in seconds of arc
971023 691 0.8+ 0.1- 971102 691 0.9- 0.3- 971109 658 0.6- 0.1-
971023 691 2.2- 0.1- 971102 691 1.1- 0.2- 971118 587 0.1- 0.1-
971023 691 0.4+ 0.4- 971102 691 1.1- 0.4- 971118 587 0.5- 0.3-
971024 691 0.0 0.2+ 971102 360 0.1+ 0.5- 971120 691 0.2- 0.3-
971024 658 0.4- 0.2+ 971102 360 0.3- 0.1- 971120 691 0.2+ 0.3-
971024 691 0.1- 0.1- 971102 360 0.1+ 0.6- 971120 691 1.2- 0.6-
971024 658 0.1+ 0.1+ 971103 691 0.2+ 0.6- 971121 046 2.2- 0.4+
971024 658 0.8- 0.0 971103 691 0.9- 0.6- 971121 046 0.6- 0.3+
971024 691 0.5- 0.0 971103 691 1.1- 0.3- 971121 046 0.5- 0.3-
971024 608 0.7+ 0.3+ 971105 381 0.3+ 0.4+ 971121 046 1.1- 0.6-
971024 608 1.3+ 0.4+ 971105 381 0.5- 0.2- 971123 360 0.4+ 1.0+
971025 691 0.2+ 0.5- 971105 381 0.3- 0.2- 971123 360 0.3+ 0.1-
971025 691 0.2- 0.2- 971106 704 0.4+ 0.2+ 971123 360 0.0 0.2+
971025 691 0.9+ 1.1- 971106 704 (3.4+ 0.5-) 971124 691 1.3+ 0.2+
971025 691 0.0 0.0 971106 704 0.6+ 0.6+ 971124 691 0.7- 0.1+
971025 691 0.1- 0.0 971106 704 2.6+ 2.0+ 971124 691 0.8- 0.2+
971025 691 0.6- 0.6- 971106 704 0.5+ 0.1+ 971202 658 1.2- 1.2-
971026 784 1.4+ 0.0 971106 704 1.9+ 0.1+ 971202 658 0.6- 0.2+
971026 784 0.7+ 0.1- 971106 704 0.9+ 1.3+ 971205 658 0.7- 0.1+
971026 784 0.5+ 0.4- 971106 704 (3.5+ 2.6+) 971205 658 1.0- 0.3-
971026 784 0.9+ 0.6- 971106 704 0.6+ 0.7- 971205 658 0.1- 0.0
971026 784 0.3+ 0.5- 971106 704 0.6+ 0.9+ 971228 691 1.3+ 0.0
971026 784 1.1+ 0.0 971107 360 0.1- 0.1+ 971228 691 0.9+ 0.2+
971027 104 0.6+ 0.4- 971107 360 0.1- 0.2+ 971228 691 0.8- 0.5+
971027 104 0.1+ 0.3+ 971107 360 0.8- 0.7+ 000609 691 1.5+ 0.2+
971027 104 0.7+ 0.0 971109 696 0.2- 0.1+ 000609 691 0.6- 0.9+
971102 046 0.5- 0.4+ 971109 696 0.0 0.1- 000609 691 0.8- 0.5-
971102 046 1.0- 0.0 971109 696 0.2- 0.0 000612 413 0.3- 0.1+
971102 046 0.4- 0.2- 971109 658 0.9- 0.2+ 000612 413 0.3- 0.3+
971102 046 0.2- 0.4- 971109 658 0.1+ 0.0 000612 413 0.3- 0.1+
Ephemeris:
1997 US2 a,e,i = 1.67, 0.66, 3 q = 0.5683
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 06 05 22 24.86 -15 02.1 0.292 1.113 102.1 63.0 19.6
2000 06 10 22 00.29 -18 05.9 0.303 1.170 113.5 52.8 19.5
2000 06 15 21 35.37 -20 50.3 0.319 1.225 124.6 43.0 19.4
2000 06 20 21 10.45 -23 11.6 0.338 1.279 135.5 33.8 19.4
2000 06 25 20 46.15 -25 06.4 0.363 1.332 145.9 25.3 19.4
2000 06 30 20 23.19 -26 34.1 0.393 1.384 155.7 17.6 19.4
2000 07 05 20 02.28 -27 36.0 0.429 1.435 164.6 10.8 19.4
2000 07 10 19 43.95 -28 16.0 0.471 1.484 171.6 5.7 19.5
2000 07 15 19 28.41 -28 38.6 0.519 1.532 172.5 5.0 19.7
2000 07 25 19 05.52 -28 49.5 0.631 1.625 161.0 11.7 20.6
2000 08 04 18 52.11 -28 36.1 0.762 1.713 149.1 17.7 21.3
2000 08 14 18 46.12 -28 13.4 0.909 1.797 138.4 22.0 21.9
2000 08 24 18 45.61 -27 47.7 1.069 1.876 128.8 24.8 22.5
Gareth V. Williams (C) Copyright 2000 MPC M.P.E.C. 2000-L42
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- B01 (the abbreviated form)