MPEC 2009-D11 : 2005 WR54
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M.P.E.C. 2009-D11 Issued 2009 Feb. 17, 05:31 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 WR54
Revision to MPEC 2005-W87
Additional Observations:
K05W54R C2009 02 16.11241 12 54 03.96 +20 52 39.5 22.0 C ED011493
K05W54R C2009 02 16.11915 12 54 03.65 +20 52 44.2 21.7 C ED011493
K05W54R C2009 02 16.12586 12 54 03.35 +20 52 48.6 22.1 C ED011493
K05W54R C2009 02 17.14125 12 53 18.39 +21 04 19.7 22.0 C ED011493
K05W54R C2009 02 17.14384 12 53 18.27 +21 04 21.3 21.7 C ED011493
Observer details:
493 Calar Alto. Observers F. Hormuth, J. C. Datson. 1.23-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
090216 493 49.3+ 39.9- 090217 493 49.2+ 39.9- MPO 97989 -0.040 day
Orbital elements:
2005 WR54 Earth MOID = 0.1951 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 55.08818 (2000.0) P Q
n 0.36381474 Peri. 325.98012 +0.75417454 -0.60943156
a 1.9433418 Node 73.49329 +0.64485453 +0.61697575
e 0.4074924 Incl. 14.77843 +0.12402985 +0.49792982
P 2.71 H 19.2 G 0.15 U 2
Residuals in seconds of arc
051126 703 0.3- 0.0 051129 704 0.3+ 0.5- 051209 448 0.3- 0.2-
051126 703 0.4- 0.2+ 051129 704 0.0 1.0- 051209 448 0.4- 0.4-
051126 703 0.2- 0.3+ 051129 704 0.5+ 1.1- 051209 448 0.0 0.2-
051126 703 0.6- 0.6+ 051129 G96 0.7+ 0.2+ 051210 703 0.6- 0.7-
051126 703 0.5- 0.1- 051129 G96 0.2- 0.1- 051210 703 0.9- 0.7+
051126 703 0.5- 0.2+ 051129 711 0.2+ 0.4+ 051210 703 1.1- 0.0
051126 703 0.2- 0.4+ 051129 G96 0.0 0.1- 051210 703 0.5- 0.2+
051126 703 0.2+ 0.3- 051129 711 0.0 0.3+ 051221 703 1.1- 0.2-
051128 704 0.6- 0.6+ 051129 711 0.2+ 0.3+ 051221 703 0.5- 0.3-
051128 704 0.1+ 0.7+ 051129 G96 0.0 0.3- 051221 703 0.3- 1.0-
051128 704 0.2+ 0.2+ 051130 704 0.4+ 0.9+ 051221 703 1.2- 0.5-
051128 704 0.4+ 0.0 051130 704 0.0 0.2- 051223 704 1.0+ 0.2-
051128 703 0.5+ 0.7- 051130 704 0.5- 0.1+ 051223 704 0.2+ 0.6+
051128 703 0.1- 0.3+ 051130 704 0.5+ 0.1+ 051223 704 0.6+ 0.3+
051128 703 0.2+ 0.4- 051130 704 0.2- 0.4- 051223 704 1.4+ 0.2-
051128 703 0.6+ 0.6- 051201 704 0.4- 0.5+ 051223 704 0.8+ 1.0+
051128 703 0.8- 0.1+ 051201 704 0.5+ 0.2- 060106 448 0.3- 0.2-
051128 703 0.9- 0.5+ 051201 704 1.0+ 0.2+ 060106 448 0.0 0.0
051128 703 0.7- 0.5- 051201 704 0.6+ 0.0 060106 448 0.1+ 0.2-
051128 703 0.2+ 0.1- 051201 704 0.4+ 0.3+ 060109 703 0.8- 0.9+
051128 703 0.2- 0.0 051202 704 1.1+ 0.6+ 060109 703 0.9+ 0.4-
051128 703 0.1- 0.3+ 051202 704 0.7+ 0.2+ 060109 703 0.3- 0.9-
051128 703 0.3+ 0.0 051202 704 0.3+ 0.8+ 060109 703 0.2- 0.8+
051128 703 0.2- 0.6- 051202 704 0.2+ 0.1+ 060129 941 0.1+ 0.2+
051128 703 0.4- 0.4- 051202 704 0.3+ 0.4- 060129 941 0.1+ 0.2+
051128 703 0.5- 0.2- 051202 704 0.9+ 0.9- 060129 941 0.1- 0.0
051128 703 0.1- 0.4- 051202 704 0.5+ 0.8+ 090216 493 0.2+ 0.2-
051128 703 0.6- 0.3+ 051202 704 0.4+ 0.9+ 090216 493 0.2+ 0.0
051129 651 0.2- 0.2+ 051202 704 0.6+ 0.0 090216 493 0.2+ 0.2-
051129 651 0.0 0.2- 051204 703 0.5- 0.1+ 090217 493 0.4- 0.2+
051129 651 0.0 0.2+ 051204 703 0.5+ 0.3+ 090217 493 0.3- 0.1+
051129 704 0.8+ 0.2- 051204 703 0.4- 0.0
051129 704 0.1- 1.4- 051204 703 0.6- 0.2+
Ephemeris:
2005 WR54 a,e,i = 1.94, 0.41, 15 q = 1.1514
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2009 02 18 12 52.64 +21 14.1 1.324 2.169 139.0 17.4 22.4
2009 02 28 12 42.95 +23 03.6 1.310 2.212 147.7 13.8 22.3
2009 03 10 12 30.41 +24 35.6 1.319 2.252 153.7 11.3 22.3
2009 03 20 12 16.50 +25 37.4 1.353 2.291 154.2 10.9 22.3
2009 03 30 12 02.95 +26 02.2 1.414 2.329 149.3 12.6 22.5
2009 04 09 11 51.32 +25 49.8 1.497 2.365 141.5 15.3 22.8
Gareth V. Williams (C) Copyright 2009 MPC M.P.E.C. 2009-D11
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