MPEC 2009-C09 : 2009 BD81
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M.P.E.C. 2009-C09 Issued 2009 Feb. 2, 16:46 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 BD81
Observations:
K09B81D* C2009 01 31.10076 04 50 33.30 +71 50 52.1 EC009H55
K09B81D C2009 01 31.11650 04 50 25.79 +71 50 58.9 18.9 V EC009H55
K09B81D C2009 01 31.11829 04 50 24.86 +71 51 00.1 19.1 V EC009H55
K09B81D C2009 01 31.12091 04 50 23.81 +71 51 00.9 19.4 V EC009H55
K09B81D C2009 02 02.12887 04 34 04.62 +72 06 08.4 18.3 V EC009H85
K09B81D C2009 02 02.14041 04 33 58.18 +72 06 11.3 18.3 V EC009H85
K09B81D C2009 02 02.15024 04 33 55.26 +72 06 20.5 18.1 R EC009H36
K09B81D C2009 02 02.15249 04 33 51.72 +72 06 14.6 18.7 V EC009H85
K09B81D C2009 02 02.15354 04 33 53.35 +72 06 21.5 18.4 R EC009H36
K09B81D C2009 02 02.15516 04 33 52.48 +72 06 21.9 18.3 R EC009H36
K09B81D C2009 02 02.28469 04 32 41.65 +72 06 58.6 18.2 R EC009H01
K09B81D C2009 02 02.29005 04 32 38.78 +72 06 59.4 18.3 R EC009H01
K09B81D C2009 02 02.29806 04 32 34.42 +72 07 00.6 18.2 R EC009H01
K09B81D C2009 02 02.30214 04 32 32.23 +72 07 01.3 18.3 R EC009H01
K09B81D C2009 02 02.30292004 32 31.65 +72 06 48.4 18.6 V EC009H55
K09B81D C2009 02 02.30588 04 32 30.22 +72 07 01.8 18.3 R EC009H01
K09B81D C2009 02 02.30660604 32 29.82 +72 06 48.2 19.0 V EC009H55
K09B81D C2009 02 02.30954904 32 28.45 +72 06 48.1 19.4 V EC009H55
Observer details:
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
H55 Astronomical Research Observatory, Charleston. Observer R. Holmes.
Measurers S. Kirby, K. Dankov, H. Devore. 0.61-m f/4.0 astrograph + CCD.
H85 Silver Spring. Observer K. Levin. Measurer N. Teamo. 0.45-m f/7.25
Ritchey-Chretien + 3072x2054 CCD.
Orbital elements:
2009 BD81 PHA, Earth MOID = 0.0469 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 337.21310 (2000.0) P Q
n 0.22474298 Peri. 190.56222 -0.99492922 -0.08161838
a 2.6792421 Node 344.38894 +0.10057757 -0.80754849
e 0.6513944 Incl. 12.61518 -0.00002867 -0.58412660
P 4.39 H 20.2 G 0.15 U 8
Residuals in seconds of arc
090131 H55 (2.0- 0.6+) 090202 H36 0.8+ 0.1- 090202 H01 0.1+ 0.0
090131 H55 0.3+ 0.3- 090202 H85 0.3+ 0.4- 090202 H01 0.1+ 0.1+
090131 H55 0.2+ 0.0 090202 H36 0.5+ 0.0 090202 H55 0.1- 0.5+
090131 H55 (1.5+ 0.4-) 090202 H36 0.6+ 0.1- 090202 H01 0.1+ 0.0
090202 H85 0.3- 0.7- 090202 H01 0.0 0.1+ 090202 H55 0.3+ 0.3-
090202 H85 0.6- 0.8- 090202 H01 0.2+ 0.0 090202 H55 1.0+ 0.8-
Ephemeris:
2009 BD81 a,e,i = 2.68, 0.65, 13 q = 0.9340
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 01 29 05 05.96 +71 30.0 0.212 1.100 117.8 52.4 19.0
2009 02 03 04 26.56 +72 10.9 0.180 1.066 111.8 59.1 18.7
2009 02 08 03 34.94 +72 14.4 0.148 1.034 105.0 67.1 18.5
2009 02 13 02 25.37 +70 53.1 0.116 1.007 96.3 77.2 18.2
2009 02 18 00 57.70 +65 42.3 0.0853 0.983 83.7 91.4 18.1
2009 02 23 23 28.74 +50 18.1 0.0589 0.963 61.8 115.1 18.5
2009 02 28 22 19.33 +15 21.2 0.0467 0.948 24.2 154.7 22.9
Timothy B. Spahr (C) Copyright 2009 MPC M.P.E.C. 2009-C09
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