MPEC 1999-J23 : 1998 HN151
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M.P.E.C. 1999-J23 Issued 1999 May 7, 18:49 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 HN151
Observations:
J98HF1N*1C1998 04 21.29181 12 30 23.73 +13 24 59.8 24.5 R 568
J98HF1N 1C1998 04 21.34742 12 30 23.47 +13 25 00.4 24.5 R 568
J98HF1N 1C1998 04 21.38851 12 30 23.28 +13 25 01.2 24.5 R 568
J98HF1N 1C1998 05 01.38939 12 29 39.48 +13 26 30.9 24.5 R 568
J98HF1N 1C1998 05 01.40115 12 29 39.42 +13 26 30.7 24.5 R 568
J98HF1N 1C1998 05 01.41292 12 29 39.36 +13 26 30.9 24.5 R 568
J98HF1N 1C1998 05 23.25272 12 28 24.46 +13 25 42.3 24.5 R 568
J98HF1N 1C1998 05 23.26531 12 28 24.41 +13 25 41.9 24.5 R 568
J98HF1N 1C1998 05 23.27895 12 28 24.35 +13 25 41.7 24.5 R 568
J98HF1N 1C1998 07 01.26692 12 27 47.38 +13 10 44.4 24.5 R 568
J98HF1N 1C1998 07 01.34797 12 27 47.47 +13 10 41.8 24.5 R 568
J98HF1N 1C1999 01 22.48182 12 40 33.04 +11 43 56.4 24.5 R 568
J98HF1N 1C1999 01 24.55395 12 40 30.02 +11 44 51.0 24.5 R 568
Observer details:
568 Mauna Kea. Observers J. Kormendy, R. Wainscoat, D. Tholen, D. Jewitt,
J. Luu, C. Trujillo. Measurer C. Trujillo. 3.6-m Canada-France-Hawaii
telescope + CCD.
Orbital elements:
1998 HN151
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Marsden
M 163.58594 (2000.0) P Q
n 0.00424316 Peri. 338.86093 +0.94045543 -0.22373351
a 37.7870564 Node 37.20430 +0.33937330 +0.66058200
e 0.0570603 Incl. 25.03808 -0.01921813 +0.71664129
P 232 H 8.8 G 0.15 U 6
Residuals in seconds of arc
980421 568 0.0 0.3- 980501 568 0.2- 0.3+ 980701 568 0.3+ 0.2+
980421 568 0.0 0.3- 980523 568 0.2+ 0.1+ 990122 568 0.0 0.2+
980421 568 0.1+ 0.1- 980523 568 0.0 0.2- 990124 568 0.0 0.2-
980501 568 0.1+ 0.4+ 980523 568 0.4- 0.3-
980501 568 0.0 0.2+ 980701 568 0.1- 0.0
Ephemeris:
1998 HN151 a,e,i = 37.79, 0.06, 25 q = 35.631
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 05 02 12 33.80 +12 27.1 39.092 39.860 139.2 0.9 24.9
1999 05 12 12 33.15 +12 27.6 39.203 39.861 130.1 1.1 24.9
1999 05 22 12 32.62 +12 27.0 39.334 39.861 120.8 1.2 25.0
1999 06 01 12 32.21 +12 25.1 39.479 39.862 111.5 1.4 25.0
1999 06 11 12 31.94 +12 22.1 39.634 39.862 102.2 1.4 25.0
1999 06 21 12 31.83 +12 18.1 39.796 39.862 93.0 1.5 25.0
1999 07 01 12 31.86 +12 13.0 39.960 39.863 83.8 1.5 25.0
1999 07 11 12 32.05 +12 07.1 40.120 39.863 74.7 1.4 25.0
1999 07 21 12 32.38 +12 00.4 40.273 39.864 65.6 1.3 25.0
1999 07 31 12 32.86 +11 53.1 40.415 39.864 56.5 1.2 25.0
1999 08 10 12 33.47 +11 45.3 40.541 39.864 47.6 1.1 25.0
1999 08 20 12 34.19 +11 37.2 40.648 39.865 38.8 0.9 25.0
1999 08 30 12 35.02 +11 29.0 40.733 39.865 30.3 0.7 25.0
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-J23
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