MPEC 2004-B68 : 2001 US16
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M.P.E.C. 2004-B68 Issued 2004 Jan. 30, 11:53 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.
Supported in part by the Steven and Michele Kirsch Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2001 US16
Revision to MPEC 2001-U53
Additional Observations:
K01U16S C2004 01 29.47185 11 37 44.97 -01 14 01.6 20.9 V EB068291
K01U16S C2004 01 29.48055 11 37 45.51 -01 14 05.4 20.9 V EB068291
K01U16S C2004 01 29.48923 11 37 46.06 -01 14 09.3 21.0 V EB068291
K01U16S HC2004 01 30.35229 11 38 45.81 -01 20 26.1 20.7 V EB068291
K01U16S HC2004 01 30.36110 11 38 46.37 -01 20 29.6 20.2 V EB068291
K01U16S HC2004 01 30.37104 11 38 47.05 -01 20 34.9 20.5 V EB068291
Observer details:
291 LPL/Spacewatch II. Observers J. A. Larsen, M. Block. 1.8-m f/2.7
reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
040129 291 0.13- 0.04+ 040130 291 0.13- 0.05+ MPO 53696 +0.052 day
Orbital elements:
2001 US16 PHA 0.031
Epoch 2003 Dec. 27.0 TT = JDT 2453000.5 MPC
M 268.32237 (2000.0) P Q
n 0.62329947 Peri. 65.08964 -0.45589778 +0.89003118
a 1.3572866 Node 177.78635 -0.82833519 -0.42375613
e 0.2533309 Incl. 1.94338 -0.32560408 -0.16815246
P 1.58 H 20.6 G 0.15 U 5
Residuals in seconds of arc
011023 691 1.0- 0.3- 011026 291 0.1+ 0.1- 011111 291 0.2- 0.3+
011023 691 0.5+ 0.2+ 011026 291 0.5- 0.1+ 011111 291 0.7+ 0.6-
011023 691 0.6+ 0.2+ 011026 711 1.2- 0.4+ 011118 691 1.2+ 1.4+
011024 291 0.1+ 0.2+ 011026 711 0.2- 1.4+ 011118 691 0.9- 0.8+
011024 291 0.2+ 0.4+ 011026 711 0.5+ 1.7- 011118 691 0.3- 0.0
011024 291 0.1- 0.4- 011027 691 0.3+ 0.2- 040129 291 0.3+ 0.3-
011024 691 0.1- 0.4- 011027 691 0.0 0.4- 040129 291 0.3+ 0.3-
011024 691 0.1+ 0.5- 011027 691 0.1+ 0.2+ 040129 291 0.5+ 0.4-
011024 691 0.1+ 0.4- 011027 691 0.1+ 0.1- 040130 291 1.0- 0.3+
011025 291 0.9+ 1.1- 011027 691 0.2+ 0.1- 040130 291 0.7- 0.6+
011025 291 0.0 0.4- 011027 691 0.1- 0.1- 040130 291 0.4+ 0.3-
011026 291 0.1- 0.0 011111 291 1.0- 1.2+
Ephemeris:
2001 US16 a,e,i = 1.36, 0.25, 2 q = 1.0134
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2004 01 26 11 33.67 -00 47.2 0.472 1.342 131.0 33.6 21.0
2004 02 05 11 44.84 -01 57.8 0.392 1.304 138.1 30.4 20.5
2004 02 15 11 54.00 -02 45.5 0.321 1.265 145.7 26.1 19.8
2004 02 25 12 00.82 -03 01.2 0.258 1.227 154.1 20.6 19.1
2004 03 06 12 05.42 -02 34.6 0.204 1.189 163.3 13.8 18.3
2004 03 16 12 08.33 -01 13.1 0.159 1.153 173.3 5.8 17.4
2004 03 26 12 10.85 +01 21.4 0.121 1.119 175.7 3.9 16.6
2004 04 05 12 16.30 +05 32.2 0.090 1.088 164.5 14.2 16.4
2004 04 15 12 30.77 +12 17.4 0.064 1.061 152.9 25.5 15.9
2004 04 25 13 10.43 +24 05.4 0.043 1.039 139.9 38.6 15.4
2004 05 05 15 19.23 +43 11.4 0.030 1.024 120.1 58.4 15.1
2004 05 15 19 31.37 +43 34.5 0.032 1.015 96.4 81.8 16.0
2004 05 25 21 21.64 +29 35.1 0.047 1.013 89.3 88.1 17.1
2004 06 04 22 02.10 +21 03.5 0.065 1.019 92.2 84.1 17.7
2004 06 14 22 21.76 +15 56.7 0.083 1.032 98.8 76.7 17.9
2004 06 24 22 31.02 +12 12.7 0.100 1.051 107.4 67.4 18.1
2004 07 04 22 33.04 +08 51.7 0.116 1.075 117.6 56.9 18.1
2004 07 14 22 28.84 +05 25.4 0.131 1.104 129.4 45.3 18.1
2004 07 24 22 19.29 +01 40.4 0.148 1.137 142.6 32.9 18.1
2004 08 03 22 06.72 -02 13.0 0.170 1.173 156.4 20.2 18.1
2004 08 13 21 53.87 -05 51.8 0.200 1.210 169.7 8.6 18.1
2004 08 23 21 43.50 -08 53.9 0.238 1.248 173.3 5.5 18.4
2004 09 02 21 37.50 -11 06.3 0.288 1.287 163.0 13.3 19.2
2004 09 12 21 36.25 -12 29.8 0.348 1.325 152.7 20.4 19.9
2004 09 22 21 39.46 -13 10.8 0.418 1.363 143.5 26.0 20.6
2004 10 02 21 46.46 -13 16.4 0.498 1.399 135.3 30.2 21.1
2004 10 12 21 56.39 -12 54.3 0.586 1.434 127.8 33.3 21.6
Timothy B. Spahr (C) Copyright 2004 MPC M.P.E.C. 2004-B68
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