MPEC 2009-B68 : 2005 YR3
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M.P.E.C. 2009-B68 Issued 2009 Jan. 29, 04:26 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
2005 YR3
Revision to MPEC 2005-Y30
Additional Observations:
K05Y03R 2C2009 01 25.56141413 42 53.913+20 57 30.45 20.4 R EB068568
K05Y03R 2C2009 01 25.56220413 42 54.152+20 57 32.47 20.4 R EB068568
K05Y03R 2C2009 01 28.63996414 01 21.327+23 10 23.82 19.8 R EB068568
K05Y03R 2C2009 01 28.64075714 01 21.616+23 10 26.04 19.7 R EB068568
K05Y03R 2C2009 01 28.64155714 01 21.899+23 10 28.24 19.8 R EB068568
Observer details:
568 Mauna Kea. Observers A. Draginda, R. Zelman. Measurers D. J. Tholen,
M. Micheli, G. T. Elliott. 3.6-m reflector + MegaCam.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
090125 568 0.37- 0.65+ 090128 568 0.38- 0.78+ MPO 98031 +0.14 day
Orbital elements:
2005 YR3 Earth MOID = 0.0105 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 133.20818 (2000.0) P Q
n 1.33079816 Peri. 222.55088 +0.40145534 +0.91394140
a 0.8185802 Node 71.19762 -0.82247751 +0.38835216
e 0.2726383 Incl. 3.60594 -0.40294461 +0.11787162
P 0.74 H 23.4 G 0.15 U 2
Residuals in seconds of arc
051222 704 0.0 0.3+ 051229 147 0.3- 0.1- 060118 F65 0.6+ 0.6+
051222 704 0.8+ 0.1- 051229 147 0.2- 0.1- 060118 F65 0.7+ 0.3+
051222 704 0.2- 0.1- 051229 147 0.0 0.1- 060121 291 0.3- 1.1-
051223 704 0.9+ 0.0 051230 696 0.2- 0.3- 060121 291 0.1+ 0.0
051223 704 0.8+ 0.1- 051230 696 0.2- 0.2+ 060121 291 0.3- 0.9-
051223 704 0.3+ 0.4+ 051231 448 0.3+ 0.3- 060125 734 (1.5+ 0.6-)
051223 704 0.5+ 0.1- 051231 448 0.3- 0.2- 060125 734 (2.0+ 0.6-)
051224 143 0.6- 0.6- 051231 448 0.5- 0.5- 060125 734 0.7+ 1.1+
051224 143 0.3- 0.5- 060103 147 0.2- 0.2- 060125 734 (0.2+ 1.9-)
051224 143 0.4- 0.8- 060103 147 0.3+ 0.4+ 060125 696 0.2- 0.4+
051226 734 0.1- 0.1- 060104 734 0.3+ 0.3- 060125 696 (1.7- 0.0 )
051226 734 0.3+ 0.3- 060104 734 0.7- 1.2- 060125 291 0.5+ 0.7-
051226 734 0.6- 0.1+ 060106 F65 0.4+ 0.1+ 060125 291 0.6+ 0.2+
051226 734 0.8+ 0.1- 060106 F65 0.1+ 0.0 060125 291 0.1+ 0.0
051226 291 (1.1- 1.7+) 060106 F65 0.4+ 0.3+ 060126 291 (3.0+ 0.1+)
051226 291 (0.6- 2.2+) 060106 A48 0.4+ 0.1+ 060126 291 0.1- 0.2-
051226 291 0.1+ 1.2+ 060106 A48 0.2+ 0.2- 060126 291 0.0 0.3-
051228 J95 0.1- 0.1- 060106 A48 0.2+ 0.2+ 060130 734 0.6- 0.1+
051228 J95 0.3- 0.1+ 060106 A48 0.4+ 0.4+ 060130 734 (1.8- 1.4+)
051228 J95 0.1- 0.0 060106 147 0.2+ 0.1+ 060130 734 (1.6- 0.8+)
051228 701 0.4+ 0.2+ 060106 147 0.3+ 0.1+ 090125 568 0.2+ 0.1+
051228 701 (1.7- 0.5+) 060106 147 0.1+ 0.1- 090125 568 0.2+ 0.1+
051228 701 (2.6+ 0.1-) 060118 734 0.5+ 0.1+ 090128 568 0.1- 0.0
051229 734 0.3+ 0.3+ 060118 734 0.2- 0.5+ 090128 568 0.0 0.0
051229 734 0.1+ 0.1- 060118 734 0.4+ 0.3- 090128 568 0.1- 0.1-
051229 734 0.8+ 0.1- 060118 F65 0.9+ 0.6+
051229 734 0.6+ 0.4- 060118 F65 0.7+ 0.1+
Ephemeris:
2005 YR3 a,e,i = 0.82, 0.27, 4 q = 0.5954
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 01 29 14 03.72 +23 27.0 0.103 1.019 106.5 68.0 20.9
2009 01 31 14 17.99 +25 04.2 0.0969 1.015 105.3 69.4 20.8
2009 02 02 14 34.21 +26 48.2 0.0913 1.011 103.6 71.3 20.7
2009 02 04 14 52.77 +28 37.3 0.0862 1.007 101.5 73.7 20.7
2009 02 06 15 14.07 +30 28.4 0.0816 1.002 98.8 76.6 20.6
2009 02 08 15 38.50 +32 16.5 0.0775 0.997 95.5 80.0 20.6
2009 02 10 16 06.29 +33 54.5 0.0742 0.992 91.6 84.1 20.7
2009 02 12 16 37.39 +35 13.4 0.0717 0.986 87.1 88.8 20.8
2009 02 14 17 11.27 +36 03.5 0.0701 0.980 82.0 93.9 20.9
2009 02 16 17 46.86 +36 16.6 0.0694 0.974 76.5 99.5 21.2
2009 02 18 18 22.67 +35 48.9 0.0698 0.968 70.9 105.2 21.4
2009 02 20 18 57.15 +34 42.4 0.0712 0.961 65.2 111.0 21.8
2009 02 22 19 29.05 +33 04.0 0.0736 0.954 59.6 116.5 22.2
2009 02 24 19 57.67 +31 03.7 0.0770 0.947 54.4 121.8 22.7
2009 02 26 20 22.79 +28 51.0 0.0813 0.939 49.5 126.7 23.2
2009 02 28 20 44.57 +26 34.0 0.0863 0.932 45.1 131.1 23.7
A. U. Tomatic (C) Copyright 2009 MPC M.P.E.C. 2009-B68
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