MPEC 2008-W79 : 2007 US12
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M.P.E.C. 2008-W79 Issued 2008 Nov. 27, 16:16 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
2007 US12
Revision to MPEC 2007-U94
Additional Observations:
K07U12S 2C2008 11 20.50015706 46 27.325+06 25 09.61 22.3 R EW079568
K07U12S 2C2008 11 20.50346906 46 26.884+06 25 05.87 22.6 R EW079568
K07U12S 2C2008 11 20.50676606 46 26.447+06 25 02.21 22.5 R EW079568
K07U12S 2C2008 11 21.56339606 44 09.244+06 05 13.37 22.1 R EW079568
K07U12S 2C2008 11 21.56669406 44 08.786+06 05 09.66 22.1 R EW079568
Observer details:
568 Mauna Kea. Observers G. T. Elliott, M. Micheli, D. J. Tholen. Measurer
M. Micheli. 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
081120 568 26.7+ 0.5- 081121 568 27.4+ 0.5- MPO130304 -0.0085 day
Orbital elements:
2007 US12 Earth MOID = 0.0138 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 181.83590 (2000.0) P Q
n 1.14279653 Peri. 44.54867 -0.25050720 +0.96486107
a 0.9060596 Node 211.19720 -0.92546760 -0.26271256
e 0.5146459 Incl. 8.80677 -0.28417575 +0.00502265
P 0.86 H 22.1 G 0.15 U 4
Residuals in seconds of arc
071030 703 0.5- 0.0 071101 G96 0.8+ 0.4+ 071107 703 0.6- 0.5+
071030 703 0.1- 0.1+ 071101 G96 0.3- 0.3- 071107 703 0.9- 0.5+
071030 703 0.3- 0.0 071101 G96 0.1+ 0.4- 071111 704 (1.6- 0.2-)
071030 703 0.7- 0.5+ 071101 246 0.2- 0.3+ 071111 704 0.8- 0.2-
071030 703 0.4- 0.5+ 071101 246 0.2+ 0.4+ 071111 704 0.6- 0.8-
071030 703 0.8+ 0.1+ 071101 246 0.1- 0.2- 071111 704 1.1- 0.0
071030 703 0.7- 0.4+ 071101 246 0.1+ 0.4- 071118 291 0.4+ 0.5+
071030 703 0.1- 0.2- 071102 H45 0.1+ 1.3- 071118 291 0.1+ 0.6+
071030 703 0.5- 0.2+ 071102 H45 (0.2+ 2.2-) 071118 291 0.2+ 0.1+
071030 703 0.1- 0.2- 071102 H45 (0.0 2.5-) 071130 H55 0.6+ 0.2-
071030 703 0.2- 0.1+ 071102 H45 0.2+ 1.3- 071130 H55 0.0 0.5-
071030 703 0.3- 0.1+ 071104 D21 0.6+ 0.5- 071130 H55 0.2- 0.4+
071030 J95 0.1+ 0.0 071104 D21 0.4+ 1.1+ 081120 568 0.0 0.0
071030 J95 0.2+ 0.1- 071104 A48 0.2- 0.3+ 081120 568 0.0 0.0
071030 J95 0.3+ 0.2- 071104 A48 0.6- 0.2- 081120 568 0.0 0.0
071030 A17 0.3+ 0.2- 071104 A48 0.4- 0.2+ 081121 568 0.0 0.0
071030 A17 0.1+ 0.0 071104 A48 0.2- 0.5+ 081121 568 0.1+ 0.0
071030 A17 0.1+ 0.0 071107 703 0.4- 0.5-
071101 G96 0.3+ 0.4- 071107 703 0.3+ 0.7+
Ephemeris:
2007 US12 a,e,i = 0.91, 0.51, 9 q = 0.4398
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 11 20 06 47.49 +06 34.6 0.488 1.370 133.3 31.7 22.6
2008 11 30 06 21.59 +03 24.8 0.438 1.372 146.3 23.5 22.1
2008 12 10 05 45.88 +00 25.4 0.408 1.367 155.8 17.2 21.7
2008 12 20 05 05.50 -01 48.5 0.403 1.353 152.3 19.8 21.8
2008 12 30 04 28.32 -02 49.7 0.422 1.332 139.2 28.8 22.1
2009 01 09 04 00.19 -02 41.2 0.458 1.302 125.0 38.2 22.5
2009 01 19 03 42.26 -01 45.0 0.503 1.263 112.2 46.1 22.9
2009 01 29 03 32.99 -00 21.5 0.549 1.216 101.0 52.7 23.2
2009 02 08 03 30.25 +01 15.7 0.589 1.159 91.2 58.3 23.4
2009 02 18 03 31.91 +02 58.4 0.619 1.094 82.3 63.6 23.5
2009 02 28 03 36.19 +04 42.8 0.634 1.018 74.0 69.2 23.6
2009 03 10 03 41.17 +06 27.0 0.633 0.933 65.8 76.0 23.6
2009 03 20 03 44.13 +08 10.8 0.611 0.838 57.0 85.3 23.6
2009 03 30 03 40.46 +09 56.0 0.571 0.735 46.6 99.0 23.8
2009 04 09 03 21.48 +11 41.1 0.523 0.627 32.5 120.9 24.6
2009 04 19 02 37.05 +13 01.5 0.502 0.525 12.2 156.1 29.0
2009 04 29 01 43.04 +13 15.7 0.575 0.453 10.3 156.6 29.1
2009 05 09 01 23.68 +13 41.2 0.758 0.446 24.3 111.2 24.0
2009 05 19 01 40.15 +15 16.4 0.973 0.509 29.6 79.4 23.3
2009 05 29 02 10.62 +17 13.5 1.160 0.607 31.6 60.8 23.5
2009 06 08 02 43.97 +18 57.6 1.306 0.715 33.0 50.5 23.8
2009 06 18 03 16.83 +20 18.8 1.418 0.820 34.6 44.8 24.1
2009 06 28 03 48.34 +21 16.1 1.500 0.917 36.8 41.6 24.4
2009 07 08 04 18.36 +21 51.0 1.556 1.004 39.3 39.9 24.6
2009 07 18 04 47.01 +22 05.4 1.590 1.081 42.3 39.2 24.8
2009 07 28 05 14.37 +22 00.8 1.602 1.148 45.5 39.1 25.0
2009 08 07 05 40.56 +21 38.7 1.597 1.206 49.0 39.4 25.1
2009 08 17 06 05.69 +21 00.0 1.574 1.255 52.8 40.0 25.2
2009 08 27 06 29.82 +20 05.7 1.535 1.295 56.8 40.7 25.2
2009 09 06 06 53.03 +18 56.4 1.482 1.327 60.9 41.6 25.2
2009 09 16 07 15.40 +17 32.1 1.416 1.350 65.2 42.5 25.2
2009 09 26 07 36.99 +15 52.8 1.339 1.365 69.6 43.5 25.1
2009 10 06 07 57.87 +13 58.1 1.252 1.372 74.1 44.5 25.0
2009 10 16 08 18.17 +11 46.8 1.157 1.371 78.7 45.5 24.8
2009 10 26 08 37.97 +09 16.9 1.055 1.361 83.2 46.5 24.6
2009 11 05 08 57.49 +06 25.2 0.948 1.344 87.7 47.5 24.4
2009 11 15 09 17.06 +03 06.3 0.839 1.318 91.9 48.6 24.1
2009 11 25 09 37.14 -00 48.2 0.729 1.284 95.7 49.9 23.8
2009 12 05 09 58.71 -05 32.6 0.620 1.241 98.6 51.7 23.4
2009 12 15 10 23.65 -11 31.1 0.516 1.189 100.2 54.6 23.0
2009 12 25 10 55.87 -19 22.7 0.419 1.128 99.0 59.4 22.6
2010 01 04 11 44.95 -29 57.2 0.337 1.057 93.3 68.2 22.3
2010 01 14 13 14.50 -42 38.9 0.281 0.977 80.4 83.1 22.2
2010 01 24 15 50.85 -49 30.6 0.273 0.887 61.5 102.9 22.8
2010 02 03 18 17.05 -42 51.1 0.322 0.788 44.3 119.1 23.9
2010 02 13 19 38.66 -32 10.7 0.424 0.681 34.4 125.0 24.6
2010 02 23 20 29.31 -23 11.5 0.572 0.574 30.4 119.4 24.5
2010 03 05 21 12.73 -15 55.7 0.766 0.483 28.4 102.7 23.7
2010 03 15 21 59.90 -09 32.9 0.996 0.440 25.6 77.0 23.0
2010 03 25 22 51.48 -03 40.6 1.223 0.470 21.5 51.1 22.8
2010 04 04 23 41.80 +01 30.8 1.415 0.555 17.8 33.5 23.0
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-W79
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