MPEC 2012-R13 : 2009 BW2
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M.P.E.C. 2012-R13 Issued 2012 Sept. 8, 15:29 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
2009 BW2
Revision to MPEC 2009-B31
Additional Observations:
K09B02W 2C2012 08 28.31979919 37 55.544-34 15 48.85 21.1 RtER013568
K09B02W 2C2012 09 08.30099820 22 50.146-26 58 50.34 21.1 RtER013568
K09B02W 2C2012 09 08.30248320 22 50.356-26 58 47.69 21.0 RtER013568
K09B02W 2C2012 09 08.30396620 22 50.561-26 58 44.96 21.3 RtER013568
Observer details:
568 Mauna Kea. Observers P. Forshay, L. Wells. Measurers D. J. Tholen,
M. Micheli. 3.6-m Canada-France-Hawaii Telescope.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
120828 568 0.47- 0.03- 120908 568 0.30- 0.06- MPO167332 +0.066 day
Orbital elements:
2009 BW2 Earth MOID = 0.0163 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 128.89959 (2000.0) P Q
n 0.95554751 Peri. 194.93417 -0.76973092 +0.63832504
a 1.0208639 Node 24.73763 -0.58385218 -0.69923119
e 0.1398627 Incl. 1.01972 -0.25812972 -0.32189577
P 1.03 H 25.1 G 0.15 U 2
Residuals in seconds of arc
090120 703 0.6- 0.3- 090120 J95 0.2+ 0.5- 090129 H55 0.4- 0.2+
090120 703 0.1- 0.7+ 090121 H55 0.3+ 0.1- 090129 H55 0.1- 0.1-
090120 703 1.3- 0.6- 090121 H55 0.0 0.1- 090129 H55 0.0 0.0
090120 703 0.6- 0.4- 090121 H55 0.0 0.1+ 090131 H55 0.0 0.1+
090120 H01 0.2+ 0.0 090121 H55 0.0 0.0 090131 H55 0.1+ 0.1+
090120 H01 0.1+ 0.1+ 090123 J95 0.1- 0.2+ 090131 H55 0.1- 0.0
090120 854 0.5- 0.2+ 090123 J95 0.1- 0.2+ 090205 H55 0.3- 0.3+
090120 H01 0.0 0.1+ 090123 J95 0.2+ 0.1+ 090205 H55 0.7+ 0.2-
090120 854 0.2- 0.2+ 090125 H55 0.2- 0.2+ 120828 568 0.1+ 0.1-
090120 854 0.7+ 0.5+ 090125 H55 0.1- 0.1+ 120908 568 0.0 0.1+
090120 H01 0.1+ 0.0 090125 H55 0.1- 0.2+ 120908 568 0.0 0.0
090120 H01 0.1+ 0.0 090125 A17 0.2+ 0.2+ 120908 568 0.0 0.0
090120 J95 0.2+ 0.2- 090125 A17 0.1- 0.2+
090120 J95 0.1+ 0.3- 090125 A17 0.1- 0.2+
Ephemeris:
2009 BW2 a,e,i = 1.02, 0.14, 1 q = 0.8781
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2012 08 09 14 05 57.0 -44 19 23 0.03436 1.0138 89.0 89.1 20.9
...
2012 08 24 19 06 59.4 -38 22 09 0.05710 1.0490 130.6 47.1 20.8
...
2012 09 01 19 56 37.7 -31 21 22 0.07910 1.0668 135.3 41.7 21.4
...
2012 09 07 20 18 51.5 -27 38 42 0.09760 1.0794 135.5 40.9 21.8
2012 09 08 20 21 55.6 -27 07 05 0.1008 1.0815 135.3 40.9 21.9
2012 09 09 20 24 51.9 -26 36 45 0.1041 1.0835 135.2 40.9 22.0
...
2012 09 15 20 40 27.7 -23 56 44 0.1245 1.0953 133.6 41.6 22.4
...
2012 09 23 20 58 09.1 -21 04 21 0.1536 1.1097 130.7 43.3 22.9
...
2012 10 08 21 27 54.3 -16 47 03 0.2137 1.1326 124.0 47.0 23.8
A. U. Tomatic (C) Copyright 2012 MPC M.P.E.C. 2012-R13
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