MPEC 2010-A80 : 2009 BT5
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M.P.E.C. 2010-A80 Issued 2010 Jan. 15, 13:22 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
2009 BT5
Revision to MPEC 2009-B38
Additional Observations:
K09B05T 2C2009 09 08.22732317 07 30.430-20 23 23.99 22.4 R EA080568
K09B05T 2C2009 09 08.22994917 07 30.862-20 23 28.20 22.5 R EA080568
K09B05T 2C2009 09 08.23261017 07 31.292-20 23 32.31 22.6 R EA080568
K09B05T 2C2009 12 09.21630421 43 02.751-28 21 54.75 24.3 R EA080568
Observer details:
568 Mauna Kea. Observers M. Micheli, G. T. Elliott, D. J. Tholen. Measurer
D. J. Tholen. 2.24-m University of Hawaii reflector.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
090908 568 4.8+ 5.6- 091209 568 8.0+ 0.1+ MPO156163 +0.0025 day
Orbital elements:
2009 BT5 Earth MOID = 0.2525 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC
M 163.89839 (2000.0) P Q
n 0.64729659 Peri. 73.27037 -0.86548374 +0.41873199
a 1.3235301 Node 130.55240 -0.46971672 -0.86911051
e 0.1291217 Incl. 21.21541 +0.17408072 -0.26326876
P 1.52 H 20.7 G 0.15 U 2
Residuals in seconds of arc
090120 691 0.0 0.2- 090128 291 0.3+ 0.0 090203 G96 0.4+ 0.2+
090120 691 0.0 0.2+ 090128 291 0.0 0.8+ 090203 G96 0.9+ 0.4+
090120 691 0.1- 0.3+ 090129 291 0.2- 0.4+ 090203 G96 1.0+ 0.3+
090121 J95 0.3+ 0.2+ 090129 291 0.3- 0.3+ 090213 H55 0.0 0.5-
090121 J95 0.6- 1.3- 090129 G96 0.2- 0.3- 090213 H55 0.0 0.3-
090121 H01 0.2+ 0.0 090129 G96 0.2+ 0.5- 090213 H55 0.2- 0.3-
090121 H01 0.1+ 0.1- 090129 G96 0.1+ 0.5- 090213 291 0.4- 0.4+
090121 H01 0.1+ 0.1- 090130 B67 0.6+ 1.3+ 090213 291 0.2+ 0.6+
090121 H01 0.2+ 0.1- 090130 B67 0.9+ 1.6+ 090213 291 0.3- 0.5+
090125 H55 0.2+ 0.0 090130 B67 0.4+ 0.9+ 090224 H55 0.0 0.5-
090125 H55 0.1+ 0.2- 090130 A78 0.8- 0.9+ 090224 H55 0.1+ 0.7-
090125 H55 0.1+ 0.1- 090130 A78 1.8+ 1.9- 090224 H55 0.2+ 0.7-
090125 291 0.0 0.2+ 090130 A78 0.7+ 0.6- 090330 H55 1.4- 0.4-
090125 291 0.5- 0.1- 090131 G96 0.3+ 0.5- 090330 H55 1.0- 0.7-
090126 448 0.3+ 0.1+ 090131 G96 0.1+ 0.3- 090330 H55 0.0 0.5-
090126 448 0.0 0.1- 090131 704 0.7+ 0.0 090908 568 0.0 0.1+
090126 448 0.0 0.6- 090131 G96 0.0 0.5- 090908 568 0.1+ 0.0
090128 703 0.7- 0.1- 090131 704 0.4+ 0.3+ 090908 568 0.0 0.1+
090128 703 0.0 0.0 090131 704 0.8+ 0.6+ 091209 568 0.1+ 0.2+
090128 703 1.0- 0.7+ 090131 704 0.2+ 0.5-
090128 291 0.2- 0.0 090131 704 0.4+ 0.2-
Ephemeris:
2009 BT5 a,e,i = 1.32, 0.13, 21 q = 1.1526
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2010 01 14 23 21.02 -20 32.7 1.902 1.493 50.9 30.8 24.3
2010 01 24 23 47.05 -17 52.0 1.963 1.494 47.9 29.3 24.3
2010 02 03 00 12.68 -15 03.5 2.019 1.494 45.0 27.8 24.3
2010 02 13 00 38.06 -12 09.5 2.071 1.492 42.1 26.3 24.3
2010 02 23 01 03.32 -09 12.3 2.117 1.489 39.3 24.9 24.3
Gareth V. Williams (C) Copyright 2010 MPC M.P.E.C. 2010-A80
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