MPEC 2003-Y50 : 2003 UY117
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M.P.E.C. 2003-Y50 Issued 2003 Dec. 23, 18:20 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
2003 UY117
Revision to MPEC 2003-V03
Additional Observations:
K03UB7Y C2001 07 26.46860 00 32 46.63 +11 32 56.0 20.7 R EY050644
K03UB7Y C2001 08 05.44042 00 32 27.47 +11 33 01.0 EY050644
K03UB7Y C2001 10 12.37309 00 27 13.62 +11 05 34.7 20.6 R EY050644
K03UB7Y C2002 10 30.11694 00 34 46.81 +11 46 21.1 20.9 R EY050644
K03UB7Y C2002 11 22.10551 00 33 16.30 +11 32 50.5 EY050644
K03UB7Y C2003 11 23.13530 00 42 14.69 +12 23 08.1 20.5 R EY050695
K03UB7Y C2003 11 23.19556 00 42 14.48 +12 23 06.1 EY050695
K03UB7Y C2003 11 24.12334 00 42 11.64 +12 22 36.8 20.5 R EY050695
K03UB7Y C2003 11 24.20239 00 42 11.39 +12 22 34.4 EY050695
K03UB7Y C2003 12 20.09119 00 41 29.04 +12 11 57.9 21.9 R EY050333
K03UB7Y C2003 12 22.08583 00 41 28.96 +12 11 26.5 21.1 R EY050333
Observer details:
333 Desert Eagle Observatory. Observer W. K. Y. Yeung. 0.45-m reflector
+ CCD.
644 Palomar Mountain/NEAT. Measurer R. Stoss. 1.2-m Schmidt + CCD.
695 Kitt Peak. Observers L. H. Wasserman, E. I. Chiang, J. R. Lovering.
Measurers M. W. Buie, R. L. Millis, L. H. Wasserman, K. B. Clancy,
E. I. Chiang, J. J. Qu, J. R. Lovering, S. D. Kern. 3.8-m reflector + CCD,
3.6-m WIYN reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees) and reference
010726 644 0.60- 0.30- 021122 644 0.30- 0.15- MPO 53859
Orbital elements:
2003 UY117
Epoch 2003 Dec. 27.0 TT = JDT 2453000.5 MPC
M 359.29390 (2000.0) P Q
n 0.00239418 Peri. 112.46798 +0.94444885 -0.30156313
a 55.3390607 Node 265.28124 +0.23210039 +0.89349331
e 0.4133446 Incl. 7.53431 +0.23269246 +0.33276025
P 412 H 6.4 G 0.15 U 4
Residuals in seconds of arc
010726 644 0.2- 0.3- 031022 691 0.0 0.0 031124 695 0.0 0.0
010805 644 0.3- 0.3+ 031102 291 0.0 0.3+ 031217 333 0.4- 0.1-
011012 644 0.1+ 0.2+ 031102 291 0.0 0.2+ 031218 333 0.3- 0.3-
021030 644 0.3+ 0.1+ 031102 291 0.3+ 0.0 031219 333 0.8- 1.3+
021122 644 0.3+ 0.5- 031123 695 0.2+ 0.1- 031220 333 0.3+ 0.6-
031022 691 0.1- 0.0 031123 695 0.1- 0.2- 031222 333 0.2+ 0.3-
031022 691 0.2+ 0.0 031124 695 0.0 0.1-
Ephemeris:
2003 UY117 a,e,i = 55.34, 0.41, 8 q = 32.465
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2003 12 17 00 41.50 +12 12.9 32.127 32.470 109.6 1.6 21.6
2003 12 27 00 41.51 +12 10.4 32.293 32.470 99.5 1.7 21.6
2004 01 06 00 41.73 +12 09.0 32.464 32.469 89.4 1.7 21.6
2004 01 16 00 42.14 +12 09.0 32.636 32.469 79.4 1.7 21.6
2004 01 26 00 42.74 +12 10.3 32.801 32.469 69.5 1.6 21.6
2004 02 05 00 43.53 +12 12.8 32.957 32.468 59.6 1.5 21.6
2004 02 15 00 44.46 +12 16.6 33.097 32.468 49.8 1.3 21.6
2004 02 25 00 45.54 +12 21.5 33.218 32.468 40.1 1.1 21.6
2004 03 06 00 46.72 +12 27.4 33.318 32.468 30.6 0.9 21.6
This 2:5 Neptune libration orbit keeps the object more than 21 AU from
Neptune over a 14 000-year period.
Brian G. Marsden (C) Copyright 2003 MPC M.P.E.C. 2003-Y50
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