MPEC 1999-J16 : 1998 HJ151
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M.P.E.C. 1999-J16 Issued 1999 May 7, 01:42 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 HJ151
Observations:
J98HF1J* C1998 04 28.49854 15 11 35.21 -17 48 50.3 23.4 R 568
J98HF1J C1998 04 28.53791 15 11 35.03 -17 48 49.5 23.4 R 568
J98HF1J C1998 04 28.57687 15 11 34.83 -17 48 48.7 23.4 R 568
J98HF1J C1998 05 01.52047 15 11 20.78 -17 47 54.8 23.4 R 568
J98HF1J C1998 05 01.53208 15 11 20.73 -17 47 54.6 23.4 R 568
J98HF1J C1998 05 24.37367 15 09 30.24 -17 40 48.5 23.4 R 568
J98HF1J C1998 05 24.38186 15 09 30.18 -17 40 48.4 23.4 R 568
J98HF1J C1998 06 29.38069 15 07 07.59 -17 31 36.0 23.4 R 568
J98HF1J C1998 06 29.44553 15 07 07.38 -17 31 35.2 23.4 R 568
J98HF1J C1999 03 14.60617 15 19 49.26 -18 23 43.4 23.5 R 568
J98HF1J C1999 03 15.58627 15 19 47.20 -18 23 36.5 23.5 R 568
J98HF1J C1999 04 08.55344 15 18 33.42 -18 19 12.1 23.4 R 568
J98HF1J C1999 04 08.57589 15 18 33.32 -18 19 11.7 23.4 R 568
Observer details:
568 Mauna Kea. Observers J. Luu, C. Trujillo, D. Tholen, D. Jewitt.
Measurer C. Trujillo. 2.2-m University of Hawaii reflector + CCD.
Orbital elements:
1998 HJ151
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Marsden
M 43.64829 (2000.0) P Q
n 0.00349054 Peri. 134.91686 -0.99516480 +0.09277268
a 43.0402237 Node 50.43370 -0.09770195 -0.90137221
e 0.0338396 Incl. 2.39787 -0.01006709 -0.42299098
P 282 H 7.5 G 0.15 U 6
Residuals in seconds of arc
980428 568 0.1- 0.1- 980524 568 0.1+ 0.1+ 990315 568 0.1- 0.1-
980428 568 0.0 0.1- 980524 568 0.2- 0.0 990408 568 0.1+ 0.0
980428 568 0.1- 0.0 980629 568 0.1+ 0.0 990408 568 0.1- 0.1+
980501 568 0.1+ 0.0 980629 568 0.1- 0.1+
980501 568 0.2+ 0.0 990314 568 0.0 0.1+
Ephemeris:
1998 HJ151 a,e,i = 43.04, 0.03, 2 q = 41.584
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 05 02 15 16.83 -18 12.8 41.013 42.004 169.5 0.2 23.7
1999 05 12 15 16.02 -18 09.8 40.995 42.005 179.4 0.0 23.7
1999 05 22 15 15.20 -18 06.8 41.006 42.006 170.7 0.2 23.7
1999 06 01 15 14.42 -18 03.8 41.047 42.006 160.9 0.5 23.8
1999 06 11 15 13.69 -18 01.1 41.114 42.007 151.2 0.7 23.8
1999 06 21 15 13.04 -17 58.6 41.208 42.007 141.5 0.9 23.8
1999 07 01 15 12.50 -17 56.6 41.323 42.008 131.8 1.0 23.9
1999 07 11 15 12.08 -17 55.0 41.459 42.009 122.2 1.2 23.9
1999 07 21 15 11.79 -17 54.0 41.609 42.009 112.6 1.3 23.9
1999 07 31 15 11.66 -17 53.5 41.770 42.010 103.0 1.3 23.9
1999 08 10 15 11.68 -17 53.7 41.938 42.011 93.4 1.4 23.9
1999 08 20 15 11.86 -17 54.5 42.108 42.011 83.9 1.4 23.9
1999 08 30 15 12.20 -17 55.9 42.274 42.012 74.3 1.3 23.9
1999 09 09 15 12.68 -17 57.9 42.433 42.013 64.7 1.2 23.9
1999 09 19 15 13.31 -18 00.4 42.579 42.013 55.1 1.1 23.9
1999 09 29 15 14.06 -18 03.4 42.710 42.014 45.5 1.0 23.9
1999 10 09 15 14.92 -18 06.9 42.820 42.015 35.9 0.8 23.9
Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-J16
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