MPEC 2000-L32: 1999 HG12
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M.P.E.C. 2000-L32 Issued 2000 June 8, 21:59 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 HG12
Revision to MPEC 1999-N11
Observations:
J99H12G 3C2000 06 07.25364 13 30 44.41 -09 23 40.4 568
J99H12G 3C2000 06 07.38982 13 30 44.08 -09 23 38.4 568
J99H12G 3C2000 06 08.25333 13 30 42.03 -09 23 27.1 568
Observer details:
568 Mauna Kea. Observers C. Veillet, A. Doressoundiram. 3.6-m CFHT + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc and reference
000607 568 53.4- 18.2+ 000608 568 53.5- 18.0+ MPC 35450
Orbital elements:
1999 HG12
Epoch 2000 Sept. 13.0 TT = JDT 2451800.5 Williams
M 102.41310 (2000.0) P Q
n 0.00355781 Peri. 66.68068 -0.12546817 -0.99205577
a 42.4959117 Node 30.53145 +0.90355223 -0.11805928
e 0.0566949 Incl. 1.02807 +0.40969635 -0.04344362
P 277 H 7.4 G 0.15 U 3
Residuals in seconds of arc
990418 695 0.1+ 0.3- 990605 950 0.3+ 0.3+ 000607 568 0.0 0.0
990418 695 0.2- 0.3+ 990605 950 0.2- 0.1+ 000607 568 0.1+ 0.1+
990418 695 0.1- 0.5- 990606 950 0.1+ 0.1+ 000608 568 0.2- 0.2-
Ephemeris:
1999 HG12 a,e,i = 42.50, 0.06, 1 q = 40.087
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 06 05 13 30.83 -09 24.2 42.470 43.127 129.8 1.0 23.9
2000 06 15 13 30.47 -09 22.1 42.609 43.129 120.2 1.2 23.9
2000 06 25 13 30.23 -09 20.8 42.762 43.130 110.6 1.3 23.9
2000 07 05 13 30.12 -09 20.2 42.926 43.132 101.0 1.3 23.9
2000 07 15 13 30.16 -09 20.5 43.095 43.133 91.5 1.3 23.9
2000 07 25 13 30.34 -09 21.6 43.264 43.134 82.0 1.3 23.9
2000 08 04 13 30.66 -09 23.6 43.430 43.136 72.5 1.3 23.9
2000 08 14 13 31.11 -09 26.3 43.587 43.137 63.0 1.2 23.9
Gareth V. Williams (C) Copyright 2000 MPC M.P.E.C. 2000-L32
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