MPEC 1999-J06 : 1998 HH151
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M.P.E.C. 1999-J06 Issued 1999 May 3, 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1998 HH151
Observations:
J98HF1H* C1998 04 28.30076 12 49 54.21 -05 26 12.1 23.4 R 568
J98HF1H C1998 04 28.36758 12 49 53.88 -05 26 10.1 23.4 R 568
J98HF1H C1998 04 28.44050 12 49 53.52 -05 26 07.6 23.4 R 568
J98HF1H C1998 05 01.34968 12 49 39.48 -05 24 29.1 23.4 R 568
J98HF1H C1998 05 01.36130 12 49 39.44 -05 24 28.8 23.4 R 568
J98HF1H C1998 05 01.37333 12 49 39.38 -05 24 28.2 23.4 R 568
J98HF1H rC1998 05 22.32191 12 48 14.83 -05 14 22.1 23.4 R 568
J98HF1H rC1998 05 22.33353 12 48 14.80 -05 14 21.5 23.4 R 568
J98HF1H rC1998 05 22.34517 12 48 14.75 -05 14 21.1 23.4 R 568
J98HF1H C1998 06 30.30472 12 47 24.42 -05 06 48.6 23.4 R 568
Observer details:
568 Mauna Kea. Observers D. Jewitt, J. Luu, C. Trujillo, D. Tholen. Measurer
C. Trujillo. 3.6-m Canada-France-Hawaii and 2.2-m University of Hawaii
reflectors + CCD.
Orbital elements:
1998 HH151
The following assumed 2:3 Neptune-resonance orbital elements keep the
object more than 15 AU from Neptune over a 14 000-year period
Epoch 1998 May 27.0 TT = JDT 2450960.5 Marsden
M 35.82972 (2000.0) P Q
n 0.00398885 Peri. 303.69042 -0.74636724 -0.66436571
a 39.3765371 Node 194.80585 +0.65020993 -0.71526308
e 0.2346851 Incl. 8.87443 +0.14199646 -0.21683390
P 247 H 8.5 G 0.15
From 10 observations 1998 Apr. 28-June 30.
Ephemeris:
1998 HH151 a,e,i = 39.38, 0.23, 9 q = 30.135
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 05 02 12 57.75 -05 54.3 32.165 33.077 154.4 0.8 23.8
1999 05 12 12 56.99 -05 49.0 32.255 33.082 144.5 1.0 23.8
1999 05 22 12 56.35 -05 44.5 32.368 33.088 134.7 1.2 23.8
1999 06 01 12 55.85 -05 40.9 32.502 33.094 124.9 1.4 23.9
1999 06 11 12 55.50 -05 38.3 32.653 33.099 115.3 1.6 23.9
1999 06 21 12 55.33 -05 36.7 32.816 33.105 105.7 1.7 23.9
1999 07 01 12 55.33 -05 36.3 32.986 33.111 96.1 1.7 23.9
1999 07 11 12 55.52 -05 37.0 33.160 33.116 86.7 1.8 23.9
1999 07 21 12 55.89 -05 38.8 33.332 33.122 77.2 1.7 23.9
1999 07 31 12 56.43 -05 41.8 33.498 33.127 67.8 1.6 23.9
1999 08 10 12 57.13 -05 45.7 33.653 33.133 58.4 1.5 23.9
1999 08 20 12 57.98 -05 50.5 33.793 33.139 49.0 1.3 23.9
1999 08 30 12 58.96 -05 56.2 33.916 33.144 39.7 1.1 23.9
1999 09 09 13 00.05 -06 02.5 34.016 33.150 30.3 0.9 23.9
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-J06
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