MPEC 2008-L43 : 2003 OB4
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M.P.E.C. 2008-L43 Issued 2008 June 10, 03:52 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
2003 OB4
Revision to MPEC 2003-O22
Additional Observations:
K03O04B C2008 06 09.03972 17 59 59.98 +00 15 14.5 EL043J95
K03O04B C2008 06 09.04380 18 00 00.06 +00 15 19.8 EL043J95
K03O04B C2008 06 09.04787 18 00 00.13 +00 15 24.6 19.7 R EL043J95
K03O04B C2008 06 09.92370 18 00 20.62 +00 32 55.3 EL043J95
K03O04B C2008 06 09.92767 18 00 20.74 +00 33 00.8 EL043J95
K03O04B C2008 06 09.93294 18 00 20.82 +00 33 06.1 19.2 R EL043J95
Observer details:
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
080609 J95 0.51- 0.04- 080609 J95 0.52- 0.04- MPO 53737 +0.24 day
Orbital elements:
2003 OB4 Earth MOID = 0.3148 AU
Epoch 2008 May 14.0 TT = JDT 2454600.5 MPC
M 343.12571 (2000.0) P Q
n 0.19916796 Peri. 111.60279 +0.60677585 +0.79392912
a 2.9039540 Node 195.93810 -0.77144720 +0.57645380
e 0.5551317 Incl. 8.10711 -0.19155230 +0.19333280
P 4.95 H 19.0 G 0.15 U 2
Residuals in seconds of arc
030601 691 0.1+ 0.2+ 030723 644 0.6+ 0.5+ 030724 176 0.1- 0.1-
030601 691 0.1+ 0.1+ 030723 644 0.1+ 0.8+ 030724 176 0.8- 0.3-
030601 691 0.1- 0.2+ 030724 H59 1.3- 1.3- 030819 413 0.0 0.2-
030622 699 0.1- 0.7+ 030724 H59 1.9- 0.3- 030819 413 0.0 0.3+
030622 699 0.6- 0.7+ 030724 H59 0.3+ 0.8- 030907 413 0.5- 0.7+
030622 699 0.1- 2.0+ 030724 H59 0.5+ 0.3+ 080609 J95 0.1- 0.3-
030622 699 0.4+ 0.3+ 030724 673 0.4+ 0.6+ 080609 J95 0.0 0.1+
030703 691 0.0 0.0 030724 673 0.5+ 0.4+ 080609 J95 0.1- 0.0
030703 691 0.0 0.1+ 030724 673 0.7+ 0.1+ 080609 J95 0.3- 0.6-
030703 691 0.1- 0.0 030724 176 1.2+ 0.4+ 080609 J95 0.4+ 0.2+
030723 644 0.1+ 0.6+ 030724 176 0.5+ 0.2+ 080609 J95 0.2+ 0.8-
Ephemeris:
2003 OB4 a,e,i = 2.90, 0.56, 8 q = 1.2919
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 06 03 17 57.48 -01 46.6 0.499 1.476 152.9 18.2 19.3
2008 06 13 18 01.46 +01 34.0 0.444 1.427 153.8 18.3 19.0
2008 06 23 18 04.96 +04 36.9 0.403 1.385 152.0 20.2 18.7
2008 07 03 18 09.21 +06 59.8 0.373 1.349 148.5 23.2 18.6
2008 07 13 18 15.79 +08 22.5 0.354 1.321 144.7 26.4 18.5
2008 07 23 18 26.11 +08 34.9 0.343 1.302 141.5 29.0 18.5
2008 08 02 18 40.94 +07 35.6 0.341 1.293 139.4 30.7 18.5
2008 08 12 19 00.51 +05 34.1 0.348 1.293 138.1 31.5 18.6
2008 08 22 19 24.18 +02 51.3 0.364 1.303 137.4 31.7 18.7
2008 09 01 19 50.68 -00 07.4 0.393 1.323 136.6 31.6 18.9
2008 09 11 20 18.67 -02 55.2 0.435 1.351 135.3 31.6 19.2
2008 09 21 20 46.80 -05 11.9 0.491 1.387 133.2 31.9 19.5
2008 10 01 21 14.10 -06 48.2 0.562 1.430 130.2 32.3 19.9
2008 10 11 21 40.14 -07 42.7 0.648 1.479 126.6 32.8 20.3
2008 10 21 22 04.71 -07 59.5 0.748 1.533 122.5 33.2 20.7
2008 10 31 22 27.86 -07 45.1 0.861 1.590 118.0 33.5 21.1
2008 11 10 22 49.77 -07 05.6 0.986 1.651 113.3 33.4 21.5
2008 11 20 23 10.62 -06 07.3 1.124 1.714 108.4 33.2 21.8
Sonia Keys (C) Copyright 2008 MPC M.P.E.C. 2008-L43
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