MPEC 2000-L45 : 1999 AR7
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M.P.E.C. 2000-L45 Issued 2000 June 14, 16:32 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 AR7
Revision to MPEC 1999-A30
Observations:
J99A07R 1C2000 06 12.80832 01 42 25.943-31 19 08.64 21.2 R 413
J99A07R 1C2000 06 12.81082 01 42 26.309-31 19 08.58 21.2 R 413
J99A07R 1C2000 06 12.81330 01 42 26.631-31 19 08.90 20.9 R 413
J99A07R 1C2000 06 13.82480 01 44 48.87 -31 20 38.9 19.2 R 413
J99A07R 1C2000 06 13.82726 01 44 49.20 -31 20 38.8 18.8 R 413
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
000612 413 6.6+ 4.8+ 000613 413 6.5+ 4.7+ MPC 35730 -0.0084 day
Orbital elements:
1999 AR7
Epoch 2000 Sept. 13.0 TT = JDT 2451800.5 Williams
M 242.71123 (2000.0) P Q
n 0.46738379 Peri. 58.17883 -0.60160551 -0.46541874
a 1.6444485 Node 85.51162 +0.30847928 -0.88503989
e 0.2142163 Incl. 40.63166 +0.73682518 -0.00947579
P 2.11 H 16.5 G 0.15 U 3
Residuals in seconds of arc
990111 704 2.3+ 0.3- 990114 704 0.7+ 2.8- 990202 402 0.6- 0.3-
990111 704 0.7+ 0.9+ 990114 704 0.3- 0.5+ 990202 402 0.2+ 1.3+
990111 704 0.9- 1.7- 990114 704 2.3- 0.3+ 990202 402 0.0 0.4+
990111 704 0.8+ 1.6- 990114 426 0.3- 0.8+ 990204 402 0.1- 0.7-
990112 758 0.4- 1.4+ 990114 426 0.1+ 0.7+ 990204 402 0.8- 0.0
990112 422 0.2+ 0.2- 990114 426 1.7- 0.4+ 990204 402 0.6- 0.3+
990112 422 0.4+ 0.3+ 990114 046 0.1+ 0.0 990209 360 0.5+ 0.0
990112 422 0.3+ 0.1- 990114 046 (3.0- 1.3-) 990209 360 0.1+ 0.2-
990112 422 1.0+ 0.3+ 990114 046 1.0- 0.1- 990209 360 0.5+ 0.5-
990112 422 0.9+ 0.4+ 990114 046 0.6- 0.4- 990214 658 1.6+ 2.4-
990112 046 0.6- 1.3+ 990114 557 0.3+ 0.0 990214 658 0.2+ 0.2-
990112 046 1.1- 0.4+ 990114 557 0.0 0.0 990214 658 0.3+ 0.6-
990112 046 0.3+ 0.6+ 990115 658 0.0 0.1- 990217 360 0.1- 0.5+
990112 046 1.0+ 0.7- 990115 658 0.3- 0.2- 990217 360 0.8- 0.0
990112 557 0.0 0.9+ 990115 658 0.1- 0.1- 990217 360 0.1- 0.3+
990112 557 0.2- 0.2+ 990115 428 0.6+ 0.0 990306 658 0.2+ 0.1+
990112 557 1.2- 0.1+ 990115 422 0.6+ 0.6+ 990306 658 0.1+ 0.2+
990113 758 0.0 0.0 990115 422 0.1+ 0.3+ 990306 658 0.0 0.0
990113 758 0.1- 0.5+ 990115 587 1.0+ 1.4+ 990522 693 0.2+ 0.6-
990113 758 0.4- 0.9+ 990115 587 0.6+ 0.0 990522 693 0.2+ 0.1-
990113 428 0.3+ 1.3- 990121 046 0.0 0.1+ 990522 693 0.3+ 0.2+
990113 428 0.3+ 0.7+ 990121 046 0.2+ 0.4+ 990804 413 0.4+ 0.4+
990113 428 0.5- 0.2- 990121 046 0.4- 0.0 990804 413 0.4+ 0.2+
990113 118 0.2- 0.4- 990122 360 0.7+ 0.2+ 990804 413 0.5+ 0.5+
990113 118 0.1+ 0.1+ 990122 360 0.1+ 0.2- 000612 413 0.0 0.0
990113 118 0.1+ 0.2- 990122 360 0.4+ 0.0 000612 413 0.3+ 0.3+
990113 587 0.3- 0.1- 990124 658 0.5+ 0.2+ 000612 413 0.0 0.2+
990113 587 0.3- 0.1+ 990124 658 0.3+ 0.4- 000613 413 0.1+ 0.6-
990114 704 0.7+ 1.2- 990124 658 0.1+ 0.2+ 000613 413 0.0 0.2-
Ephemeris:
1999 AR7 a,e,i = 1.64, 0.21, 41 q = 1.2922
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 06 05 01 23.93 -31 11.5 2.021 1.987 73.5 29.3 20.8
2000 06 15 01 47.56 -31 22.5 1.943 1.981 77.1 30.0 20.7
2000 06 25 02 10.55 -31 45.2 1.867 1.973 80.6 30.5 20.6
2000 07 05 02 32.73 -32 21.3 1.792 1.964 83.9 31.0 20.6
2000 07 15 02 53.86 -33 11.8 1.720 1.953 87.1 31.3 20.5
2000 07 25 03 13.70 -34 17.4 1.650 1.941 90.2 31.6 20.4
2000 08 04 03 31.91 -35 38.9 1.582 1.927 93.2 31.7 20.3
2000 08 14 03 48.07 -37 15.9 1.516 1.912 96.2 31.8 20.2
2000 08 24 04 01.72 -39 07.4 1.451 1.895 99.1 31.8 20.0
2000 09 03 04 12.19 -41 11.5 1.388 1.876 101.9 31.7 19.9
2000 09 13 04 18.71 -43 23.9 1.327 1.857 104.6 31.6 19.8
2000 09 23 04 20.35 -45 38.1 1.269 1.836 107.2 31.5 19.7
2000 10 03 04 16.04 -47 43.6 1.214 1.814 109.6 31.3 19.6
2000 10 13 04 04.93 -49 23.6 1.162 1.790 111.7 31.2 19.4
2000 10 23 03 46.93 -50 16.7 1.117 1.766 113.3 31.2 19.3
2000 11 02 03 23.44 -49 58.1 1.079 1.740 114.2 31.3 19.2
2000 11 12 02 57.78 -48 07.0 1.052 1.713 114.1 31.8 19.1
2000 11 22 02 33.98 -44 37.4 1.035 1.686 112.9 32.7 19.1
2000 12 02 02 15.14 -39 38.6 1.033 1.658 110.4 33.9 19.1
2000 12 12 02 02.55 -33 33.0 1.044 1.629 106.8 35.4 19.1
2000 12 22 01 55.99 -26 47.0 1.070 1.600 102.2 36.9 19.2
2001 01 01 01 54.67 -19 43.9 1.110 1.571 97.1 38.4 19.2
2001 01 11 01 57.67 -12 42.2 1.160 1.541 91.6 39.6 19.3
2001 01 21 02 04.15 -05 53.5 1.219 1.512 86.0 40.5 19.4
2001 01 31 02 13.58 +00 35.8 1.285 1.483 80.4 40.9 19.5
2001 02 10 02 25.53 +06 43.0 1.353 1.455 75.1 40.9 19.6
2001 02 20 02 39.76 +12 27.4 1.422 1.429 70.1 40.6 19.6
2001 03 02 02 56.20 +17 49.8 1.489 1.403 65.4 39.9 19.7
2001 03 12 03 14.87 +22 51.0 1.552 1.380 61.0 39.1 19.7
Gareth V. Williams (C) Copyright 2000 MPC M.P.E.C. 2000-L45
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