MPEC 2007-X57 : 2007 XJ20
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M.P.E.C. 2007-X57 Issued 2007 Dec. 14, 14:06 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 XJ20
Observations:
K07X20J* C2007 12 13.26924 04 36 12.23 +30 08 40.3 20.2 EX057704
K07X20J C2007 12 13.28221 04 36 10.01 +30 08 43.0 20.3 EX057704
K07X20J C2007 12 13.29519 04 36 08.01 +30 08 45.3 20.3 EX057704
K07X20J C2007 12 13.30818 04 36 05.80 +30 08 47.9 20.5 EX057704
K07X20J C2007 12 14.01904 04 34 11.30 +30 11 06.2 19.9 R EX057204
K07X20J C2007 12 14.05333 04 34 05.63 +30 11 12.2 EX057204
K07X20J 9C2007 12 14.27593 04 33 30.09 +30 11 57.7 19.8 R EX057673
K07X20J 9C2007 12 14.27951 04 33 29.50 +30 11 58.4 EX057673
K07X20J 9C2007 12 14.28368 04 33 28.80 +30 11 58.6 EX057673
K07X20J 9C2007 12 14.28993 04 33 27.79 +30 12 00.1 EX057673
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 reflector
+ CCD.
673 Table Mountain Observatory, Wrightwood. Observer H. Rhoades. 0.61-m f/16
Cassegrain + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Bezpalko, D. Torres,
R. Kracke, G. Spitz, J. Kistler. Measurers J. Stuart, S. Scruggs. 1.0-m
f/2.15 reflector + CCD.
Orbital elements:
2007 XJ20 Earth MOID = 0.1398 AU
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC
M 283.49763 (2000.0) P Q
n 0.42178245 Peri. 150.16688 -0.88959827 +0.43187580
a 1.7609366 Node 56.16112 -0.44643109 -0.75339931
e 0.6146917 Incl. 10.30984 -0.09651012 -0.49585559
P 2.34 H 18.6 G 0.15 U 9
Residuals in seconds of arc
071213 704 0.2+ 0.1+ 071214 204 0.2+ 0.0 071214 673 0.1- 0.4-
071213 704 0.9- 0.2+ 071214 204 0.2- 0.1- 071214 673 0.3+ 0.0
071213 704 0.9+ 0.1- 071214 673 0.1- 0.2+
071213 704 0.1- 0.1- 071214 673 0.0 0.2+
Ephemeris:
2007 XJ20 a,e,i = 1.76, 0.61, 10 q = 0.6785
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 12 06 04 54.73 +29 37.2 0.869 1.850 172.6 3.9 20.0
2007 12 11 04 42.20 +30 00.2 0.833 1.812 170.6 5.1 19.9
2007 12 16 04 28.82 +30 16.9 0.805 1.773 164.3 8.6 20.0
2007 12 21 04 15.10 +30 26.4 0.784 1.733 156.9 12.8 20.0
2007 12 26 04 01.55 +30 28.6 0.770 1.692 149.3 17.3 20.1
2007 12 31 03 48.69 +30 24.6 0.762 1.650 141.7 21.7 20.1
2008 01 05 03 36.95 +30 16.0 0.759 1.607 134.2 26.0 20.2
2008 01 10 03 26.70 +30 04.9 0.760 1.564 127.1 30.1 20.3
2008 01 15 03 18.15 +29 53.7 0.764 1.519 120.3 34.0 20.3
2008 01 20 03 11.37 +29 44.1 0.770 1.474 113.8 37.6 20.4
2008 01 25 03 06.34 +29 37.7 0.776 1.427 107.8 41.1 20.4
2008 01 30 03 03.00 +29 35.5 0.783 1.380 102.1 44.3 20.5
2008 02 04 03 01.25 +29 38.1 0.788 1.332 96.7 47.3 20.5
2008 02 09 03 00.96 +29 45.7 0.791 1.283 91.8 50.2 20.5
2008 02 14 03 02.02 +29 58.3 0.792 1.234 87.1 53.0 20.5
2008 02 19 03 04.27 +30 15.6 0.789 1.184 82.7 55.9 20.5
2008 02 24 03 07.56 +30 37.1 0.783 1.134 78.6 58.8 20.5
Timothy B. Spahr (C) Copyright 2007 MPC M.P.E.C. 2007-X57
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