MPEC 2000-G35 : 1999 HB12
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M.P.E.C. 2000-G35 Issued 2000 Apr. 9, 01:56 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 HB12
Revision to MPEC 1999-K15
Observations:
J99H12B 6C2000 03 28.48867 12 50 12.11 +00 50 43.6 23.1 R 568
J99H12B 6C2000 03 28.51282 12 50 12.00 +00 50 44.5 23.2 R 568
J99H12B 6C2000 03 28.52755 12 50 11.91 +00 50 45.1 23.0 R 568
J99H12B IC2000 04 07.20733 12 49 22.94 +00 56 40.8 22.0 R 709
J99H12B IC2000 04 07.28325 12 49 22.43 +00 56 44.4 22.3 R 709
J99H12B IC2000 04 07.35918 12 49 22.18 +00 56 44.0 23.1 R 709
Observer details:
568 Mauna Kea. Observers B. Gladman, J. Kavelaars, J. Petit, M. Holman.
3.6-m Canada-France-Hawaii Telescope + CCD.
709 Cloudcroft. Observer W. Offutt. 0.6-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees) and reference
000328 568 0.26+ 0.10- 000407 709 0.25+ 0.10- MPC 35098
Orbital elements:
1999 HB12
Epoch 2000 Feb. 26.0 TT = JDT 2451600.5 Marsden
M 343.74960 (2000.0) P Q
n 0.00246378 Peri. 63.86533 -0.63249659 +0.77272955
a 54.2918666 Node 166.49027 -0.76680599 -0.61497197
e 0.3929632 Incl. 13.17968 -0.10934636 -0.15715765
P 400 H 7.6 G 0.15 U 7
Residuals in seconds of arc
990418 695 0.1- 0.3- 990505 950 0.2+ 0.1+ 000328 568 0.4- 0.6-
990418 695 0.2+ 0.0 990505 950 0.2+ 0.1+ 000407 709 0.8+ 1.0+
990418 695 0.1- 0.1- 000328 568 0.4- 0.6- 000407 709 1.0- 1.9+
990505 950 0.3- 0.2+ 000328 568 0.1- 0.6- 000407 709 1.1+ 1.2-
Ephemeris:
1999 HB12 a,e,i = 54.29, 0.39, 13 q = 32.957
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 04 06 12 49.48 +00 55.9 34.131 35.122 172.1 0.2 23.1
2000 04 16 12 48.65 +01 01.7 34.153 35.116 163.5 0.5 23.1
2000 04 26 12 47.86 +01 06.9 34.203 35.110 153.9 0.7 23.1
2000 05 06 12 47.14 +01 11.3 34.280 35.103 144.2 1.0 23.2
2000 05 16 12 46.52 +01 14.8 34.381 35.097 134.5 1.2 23.2
2000 05 26 12 46.03 +01 17.3 34.503 35.091 124.8 1.4 23.2
2000 06 05 12 45.68 +01 18.7 34.641 35.085 115.2 1.5 23.2
2000 06 15 12 45.49 +01 19.0 34.791 35.079 105.7 1.6 23.2
2000 06 25 12 45.46 +01 18.2 34.949 35.073 96.2 1.7 23.3
2000 07 05 12 45.60 +01 16.2 35.110 35.066 86.7 1.7 23.3
2000 07 15 12 45.91 +01 13.2 35.269 35.060 77.3 1.6 23.3
2000 07 25 12 46.39 +01 09.2 35.423 35.054 68.0 1.5 23.3
2000 08 04 12 47.02 +01 04.3 35.565 35.048 58.6 1.4 23.3
2000 08 14 12 47.80 +00 58.7 35.694 35.042 49.3 1.3 23.3
2000 08 24 12 48.70 +00 52.5 35.804 35.036 40.1 1.1 23.3
2000 09 03 12 49.72 +00 45.8 35.892 35.030 30.8 0.8 23.2
Brian G. Marsden (C) Copyright 2000 MPC M.P.E.C. 2000-G35
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