MPEC 2002-C102: 1999 HE1
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M.P.E.C. 2002-C102 Issued 2002 Feb. 15, 02:40 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 HE1
Revision to MPEC 1999-H16
Observations:
J99H01E C2002 02 13.31305 08 54 08.57 +28 28 13.9 696
J99H01E C2002 02 13.31697 08 54 08.40 +28 28 15.4 696
J99H01E C2002 02 13.32111 08 54 08.10 +28 28 16.2 696
J99H01E C2002 02 14.27076 08 53 04.07 +28 31 58.5 696
J99H01E C2002 02 14.27478 08 53 03.85 +28 31 59.8 696
Observer details:
696 Whipple Observatory, Mt. Hopkins. Observer T. B. Spahr. 1.2-m reflector
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
020213 696 20.8+ 4.5- 020214 696 22.1+ 3.8- MPC 36542 -0.048 day
Orbital elements:
1999 HE1
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5 MPC
M 218.40792 (2000.0) P Q
n 0.27074521 Peri. 221.76589 +0.29931352 +0.94526165
a 2.3664402 Node 66.02248 -0.83340518 +0.32532277
e 0.5720652 Incl. 8.17769 -0.46459362 +0.02540697
P 3.64 H 17.8 G 0.15 U 2
Residuals in seconds of arc
990418 703 0.3+ 0.5+ 990420 118 0.3+ 0.2+ 990509 118 0.2+ 0.3-
990418 703 0.0 0.2+ 990420 118 0.1- 0.1- 990509 118 0.4+ 0.5+
990418 703 0.5- 1.4+ 990421 711 (1.5+ 3.7-) 990526 711 0.8- 0.1-
990418 703 0.1- 0.2- 990421 711 0.1+ 0.1- 990526 711 0.2- 0.1+
990419 704 0.6- 0.2- 990421 658 0.2+ 0.4- 990527 711 0.5- 0.4-
990419 704 (2.3- 0.1-) 990421 711 0.2+ 0.0 990527 711 0.3- 0.6+
990419 703 1.1+ 1.0+ 990421 658 0.1- 0.6+ 990604 360 0.3- 0.4-
990419 703 0.3+ 0.3- 990421 658 0.1- 0.1- 990604 360 0.6- 0.3-
990419 703 0.6+ 0.7- 990421 426 0.5+ 0.2- 990623 426 0.0 0.2+
990419 704 0.3+ 0.2- 990421 426 0.0 0.1- 990623 426 0.1- 0.2+
990419 703 0.0 0.7+ 990421 426 0.0 0.1- 990623 426 0.1+ 0.4+
990419 704 1.6- 0.1+ 990421 859 0.2- 1.1- 990623 426 0.3- 0.1+
990419 703 1.2- 0.6+ 990421 859 0.3+ 0.8- 990803 413 0.3- 0.1-
990419 704 0.8+ 0.5- 990421 859 0.9- 0.1+ 990803 413 0.3- 0.1+
990419 703 0.5+ 0.7+ 990422 859 0.6+ 0.2- 990803 413 0.2- 0.2-
990419 703 0.1- 0.5+ 990422 859 0.6+ 0.6- 990804 413 0.1- 0.0
990419 703 0.1+ 0.6+ 990422 859 (0.6- 2.2-) 990804 413 0.2+ 0.2+
990419 703 0.5+ 0.8+ 990422 658 0.0 0.0 990804 413 0.2- 0.2-
990419 703 1.2+ 0.1+ 990422 658 0.3- 0.0 990928 413 0.0 0.4+
990420 658 0.4- 0.3+ 990422 658 0.2+ 0.3- 990928 413 0.0 0.1+
990420 658 0.7- 0.1+ 990423 658 0.9+ 0.2- 991002 426 0.0 0.7+
990420 658 0.6- 0.6+ 990423 658 0.6+ 0.1+ 991002 426 0.1+ 0.6+
990420 557 0.0 0.4- 990423 658 0.3- 0.4+ 991002 426 0.7- 0.1-
990420 557 0.5- 0.4+ 990430 402 (2.1- 2.0-) 020213 696 0.9- 0.5-
990420 557 0.3- 0.1+ 990430 402 0.2- 1.1- 020213 696 0.4+ 0.1+
990420 046 0.5+ 0.2+ 990430 402 (0.0 2.2-) 020213 696 0.3+ 0.1-
990420 046 0.2+ 0.0 990507 360 1.0- 0.1+ 020214 696 0.3- 0.2-
990420 046 0.2- 0.4+ 990507 360 0.3- 0.7- 020214 696 0.4+ 0.2+
990420 046 0.3+ 0.4+ 990507 360 1.1- 0.6-
990420 118 1.8+ 0.1- 990509 118 1.2+ 0.5-
Ephemeris:
1999 HE1 a,e,i = 2.37, 0.57, 8 q = 1.0127
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2002 02 15 08 52.25 +28 34.7 2.350 3.291 158.8 6.2 22.7
2002 02 25 08 41.69 +29 04.3 2.378 3.256 147.5 9.4 22.9
2002 03 07 08 32.85 +29 18.6 2.432 3.221 136.1 12.3 23.0
2002 03 17 08 26.36 +29 18.7 2.506 3.183 125.0 14.8 23.1
2002 03 27 08 22.53 +29 06.8 2.596 3.145 114.6 16.8 23.3
2002 04 06 08 21.39 +28 45.3 2.696 3.105 104.7 18.2 23.4
2002 04 16 08 22.80 +28 16.1 2.800 3.063 95.4 19.0 23.4
Brian G. Marsden (C) Copyright 2002 MPC M.P.E.C. 2002-C102
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