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M.P.E.C. 2007-K04 Issued 2007 May 17, 16:20 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
MPC@CFA.HARVARD.EDU
URL http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2006 HJ123
Revision to MPEC 2006-L50
Additional Observations:
K06HC3J C2007 05 16.29834 14 53 17.28 -15 47 44.8 EK004695
K06HC3J C2007 05 17.29002 14 53 12.09 -15 47 18.8 EK004695
K06HC3J C2007 05 17.37827 14 53 11.62 -15 47 16.4 EK004695
Observer details:
695 Kitt Peak. Observers J. W. Parker, A. Bieryla. Measurer A. Bieryla.
2.1-m reflector + CCD.
Orbital elements:
2006 HJ123
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 MPC
M 295.33605 (2000.0) P Q
n 0.00398624 Peri. 101.44448 +0.79352226 +0.59088922
a 39.3937580 Node 222.55825 -0.60761261 +0.75612438
e 0.2911306 Incl. 12.42370 -0.03360565 +0.28129317
P 247 H 5.3 G 0.15 U 5
Residuals in seconds of arc
060427 807 0.3- 0.2+ 060620 304 0.1- 0.1- 070516 695 0.2+ 0.2-
060427 807 0.2+ 0.1+ 060821 807 0.1- 0.0 070517 695 0.1- 0.0
060428 807 0.1+ 0.2- 060822 807 0.2+ 0.1+ 070517 695 0.1- 0.1+
060620 304 0.0 0.2- 060823 807 0.0 0.2+
Ephemeris:
2006 HJ123 a,e,i = 39.39, 0.29, 12 q = 27.925
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 05 10 14 53.84 -15 50.5 36.596 37.604 176.7 0.1 21.0
2007 05 20 14 52.97 -15 46.1 36.609 37.596 166.9 0.3 21.1
2007 05 30 14 52.14 -15 42.0 36.651 37.587 157.1 0.6 21.1
2007 06 09 14 51.38 -15 38.2 36.720 37.579 147.4 0.8 21.1
2007 06 19 14 50.72 -15 34.8 36.814 37.571 137.6 1.0 21.2
2007 06 29 14 50.18 -15 32.0 36.929 37.563 128.0 1.2 21.2
2007 07 09 14 49.78 -15 29.9 37.061 37.554 118.3 1.4 21.2
2007 07 19 14 49.54 -15 28.4 37.207 37.546 108.7 1.5 21.2
2007 07 29 14 49.47 -15 27.7 37.363 37.538 99.2 1.5 21.2
2007 08 08 14 49.57 -15 27.8 37.523 37.529 89.6 1.5 21.2
2007 08 18 14 49.84 -15 28.7 37.682 37.521 80.1 1.5 21.3
2007 08 28 14 50.27 -15 30.3 37.837 37.513 70.6 1.5 21.3
2007 09 07 14 50.87 -15 32.6 37.982 37.505 61.0 1.3 21.3
2007 09 17 14 51.62 -15 35.5 38.114 37.496 51.5 1.2 21.2
2007 09 27 14 52.50 -15 39.0 38.228 37.488 41.9 1.0 21.2
2007 10 07 14 53.49 -15 42.9 38.320 37.480 32.4 0.8 21.2
This Neptune 2:3 librator remains more than 10 AU from Neptune over a
14 000-year period.
Brian G. Marsden (C) Copyright 2007 MPC M.P.E.C. 2007-K04
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