MPEC 1999-J46 : 1998 HP151
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M.P.E.C. 1999-J46 Issued 1999 May 15, 14:59 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 HP151
Revision to MPEC 1999-J25
Observations:
J98HF1P 1C1999 04 08.54442 15 17 35.44 -18 04 59.1 23.2 R 568
J98HF1P 1C1999 04 08.56718 15 17 35.35 -18 04 59.1 23.2 R 568
J98HF1P 1C1999 05 06.51082 15 15 31.89 -17 57 12.4 23.3 R 568
J98HF1P 1C1999 05 06.54164 15 15 31.74 -17 57 11.9 23.3 R 568
Observer details:
568 Mauna Kea. Observers D. Tholen, D. Jewitt, J. Luu, C. Trujillo. Measurer
C. Trujillo. 3.6-m Canada-France-Hawaii reflector + CCD, 2.2-m
University of Hawaii reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc and reference
990408 568 58.5+ 15.9- 990506 568 56.2+ 15.8- E1999-J25
Orbital elements:
1998 HP151
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Marsden
M 290.69979 (2000.0) P Q
n 0.00341100 Peri. 253.38455 +0.63343731 +0.77348224
a 43.7067248 Node 55.94029 -0.69945408 +0.58449052
e 0.0772912 Incl. 1.51917 -0.33093982 +0.24514497
P 289 H 7.3 G 0.15 U 4
Residuals in seconds of arc
980428 568 0.0 0.2- 980430 568 0.0 0.0 990408 568 0.0 0.2+
980428 568 0.1- 0.1- 980524 568 0.1- 0.4+ 990408 568 0.0 0.1-
980428 568 0.1+ 0.0 980524 568 0.1- 0.1+ 990506 568 0.0 0.0
980430 568 0.1+ 0.1- 980629 568 0.0 0.1- 990506 568 0.0 0.1-
980430 568 0.1- 0.1+ 980629 568 0.1+ 0.1-
Ephemeris:
1998 HP151 a,e,i = 43.71, 0.08, 2 q = 40.329
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 05 12 15 15.09 -17 55.5 41.758 42.768 179.7 0.0 23.6
1999 05 22 15 14.30 -17 52.5 41.767 42.766 170.5 0.2 23.6
1999 06 01 15 13.53 -17 49.6 41.806 42.764 160.7 0.4 23.7
1999 06 11 15 12.81 -17 46.8 41.872 42.762 150.9 0.7 23.7
1999 06 21 15 12.18 -17 44.4 41.963 42.760 141.2 0.9 23.7
1999 07 01 15 11.65 -17 42.4 42.077 42.758 131.6 1.0 23.7
1999 07 11 15 11.23 -17 40.9 42.210 42.756 121.9 1.2 23.8
1999 07 21 15 10.96 -17 39.8 42.358 42.754 112.3 1.3 23.8
1999 07 31 15 10.83 -17 39.4 42.517 42.752 102.7 1.3 23.8
1999 08 10 15 10.85 -17 39.6 42.682 42.750 93.2 1.4 23.8
1999 08 20 15 11.03 -17 40.4 42.849 42.748 83.6 1.3 23.8
1999 08 30 15 11.36 -17 41.8 43.013 42.746 74.0 1.3 23.8
1999 09 09 15 11.84 -17 43.8 43.169 42.744 64.5 1.2 23.8
1999 09 19 15 12.45 -17 46.3 43.312 42.742 54.9 1.1 23.8
1999 09 29 15 13.19 -17 49.2 43.439 42.740 45.3 1.0 23.8
1999 10 09 15 14.04 -17 52.6 43.546 42.738 35.6 0.8 23.8
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-J46
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