MPEC 2007-G49 : 2005 WR2
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M.P.E.C. 2007-G49 Issued 2007 Apr. 15, 23:26 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 WR2
Revision to MPEC 2005-W55
Additional Observations:
K05W02R C2007 04 09.31218 13 39 21.81 -31 23 20.3 EG049F85
K05W02R C2007 04 09.32875 13 39 19.71 -31 23 22.9 20.2 V EG049F85
K05W02R C2007 04 09.34547 13 39 17.58 -31 23 24.8 EG049F85
K05W02R C2007 04 15.51019 13 25 27.95 -31 23 16.4 19.9 R EG049474
K05W02R C2007 04 15.51308 13 25 27.50 -31 23 16.5 19.2 R EG049474
K05W02R C2007 04 15.51586 13 25 27.06 -31 23 15.8 19.7 R EG049474
K05W02R C2007 04 15.53067 13 25 24.79 -31 23 14.0 19.4 R EG049474
K05W02R C2007 04 15.53692 13 25 23.83 -31 23 13.1 19.7 R EG049474
Observer details:
474 Mount John Observatory, Lake Tekapo. Observer A. C. Gilmore. 1.0-m f/7.7
reflector + CCD.
F85 Tiki Observatory, Punaauia. Observer N. Teamo. Measurer J. C. Pelle.
0.41-m f/8.0 Ritchey-Chretien + 3056x3056 CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
070409 F85 0.09- 0.04+ 070415 474 0.10- 0.05+ MPO 97976 +0.090 day
Orbital elements:
2005 WR2 Earth MOID = 0.0756 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 MPC
M 296.58967 (2000.0) P Q
n 0.51985085 Peri. 49.42379 +0.87524303 +0.46489887
a 1.5318522 Node 282.48591 -0.47472960 +0.77282255
e 0.5462022 Incl. 7.85810 -0.09263608 +0.43198884
P 1.90 H 19.3 G 0.15 U 2
Residuals in seconds of arc
051123 704 0.2- 0.6+ 051126 699 0.6- 0.3- 051212 461 0.3- 0.2-
051123 704 0.1+ 1.3+ 051126 699 0.2- 0.7+ 051212 461 0.2- 0.1-
051123 704 0.0 0.5+ 051128 A50 0.0 0.2+ 051212 461 0.4- 0.1+
051123 704 0.0 0.5+ 051128 A50 0.0 0.2+ 051212 461 0.5- 0.2+
051123 704 0.4+ 0.6+ 051128 A50 0.2+ 0.1+ 051223 A48 0.0 0.4+
051124 H36 0.7+ 0.2- 051128 A50 0.2+ 0.0 051223 A48 0.3- 0.1+
051124 H36 0.5+ 0.1- 051128 A50 0.2+ 0.0 051223 A48 0.1+ 0.3+
051124 H36 0.2+ 0.2- 051204 G88 0.4- 0.2- 051223 A48 0.1+ 0.6+
051124 H36 0.4- 0.2- 051204 G88 1.6+ 0.5+ 051226 170 0.4- 0.2+
051124 H36 0.9- 0.2- 051204 G88 0.2+ 0.4- 051226 170 0.1- 0.1-
051124 J95 0.1- 0.4- 051204 448 1.9+ 0.8+ 051226 170 0.2- 0.2-
051124 J95 0.1- 0.1- 051204 448 (2.6+ 0.8+) 051226 170 0.2- 0.3-
051124 J95 0.0 0.1+ 051204 448 2.0+ 0.2+ 051229 704 0.2- 0.7-
051125 595 0.2+ 0.7+ 051204 448 1.4+ 0.9+ 051229 G96 0.1+ 0.3-
051125 595 (2.8+ 0.0 ) 051207 932 0.0 0.3- 051229 G96 0.1- 0.2-
051125 595 0.7- 0.7- 051207 932 0.1+ 0.3- 051229 704 0.2+ 0.3-
051125 932 0.2- 0.3- 051207 932 0.1+ 0.3- 051229 G96 0.1- 0.2-
051125 854 0.2+ 0.5+ 051207 A53 0.3- 0.0 051229 704 0.6+ 1.1-
051125 932 0.1- 0.4- 051208 A53 0.4+ 0.0 051229 G96 0.0 0.3-
051125 854 0.2- 0.1- 051209 A48 0.2+ 0.2+ 051229 704 0.0 0.8-
051125 854 0.0 0.3- 051209 A48 0.1- 0.2+ 060105 691 1.6- 0.9+
051125 932 0.1- 0.5- 051209 A48 0.1- 0.1- 060105 691 0.1+ 0.0
051125 734 0.5+ 0.3- 051209 A48 0.1+ 0.2- 060105 691 0.2+ 0.1+
051125 734 0.2- 0.2- 051210 130 0.2- 0.0 060121 291 0.4+ 0.2-
051125 734 0.2- 0.0 051210 130 0.1- 0.2- 060121 291 0.4+ 0.1-
051125 734 0.2+ 0.4- 051210 130 0.0 0.4- 060121 291 0.3+ 0.0
051125 H06 0.2- 0.6+ 051210 130 0.4+ 0.9- 070409 F85 0.2+ 0.3-
051125 H06 0.5- 0.0 051210 A48 0.5+ 0.1- 070409 F85 0.1- 0.6-
051125 H06 0.1- 0.1- 051210 A48 0.0 0.1- 070409 F85 0.4- 0.2-
051126 704 0.1- 0.0 051210 A48 0.1- 0.3+ 070415 474 0.3+ 0.3+
051126 704 0.6+ 0.2+ 051210 A48 0.7- 0.2- 070415 474 0.2+ 0.1-
051126 704 0.5- 0.2- 051210 A53 0.4- 0.5+ 070415 474 0.0 0.3+
051126 704 0.4+ 0.7- 051210 A53 0.4- 0.4+ 070415 474 0.0 0.2+
051126 704 0.3+ 0.0 051210 A53 0.2- 0.1+ 070415 474 0.0 0.3+
051126 699 0.3- 0.3+ 051212 461 0.5- 0.1+
051126 699 0.5- 0.0 051212 461 0.4- 0.0
Ephemeris:
2005 WR2 a,e,i = 1.53, 0.55, 8 q = 0.6952
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 04 10 13 37.95 -31 24.5 0.633 1.599 155.6 15.0 20.2
2007 04 20 13 13.75 -31 06.6 0.545 1.525 158.5 14.0 19.7
2007 04 30 12 44.09 -29 28.9 0.478 1.447 151.9 19.1 19.5
2007 05 10 12 13.02 -26 23.8 0.431 1.365 139.2 28.9 19.4
2007 05 20 11 44.96 -22 09.8 0.399 1.280 124.3 40.8 19.4
2007 05 30 11 22.48 -17 21.9 0.377 1.192 109.2 53.5 19.5
2007 06 09 11 05.09 -12 21.5 0.357 1.102 94.4 66.7 19.6
2007 06 19 10 50.16 -07 02.7 0.334 1.011 79.7 81.3 19.8
2007 06 29 10 32.92 -00 48.0 0.308 0.923 63.7 98.9 20.1
2007 07 09 10 05.96 +07 26.5 0.282 0.840 44.7 121.7 21.1
2007 07 19 09 21.58 +17 54.4 0.272 0.769 21.4 151.1 24.6
2007 07 29 08 24.09 +27 21.2 0.302 0.719 8.6 167.8 31.0
2007 08 08 07 38.93 +32 00.3 0.376 0.696 25.9 140.5 23.3
2007 08 18 07 21.39 +32 54.7 0.476 0.706 38.6 116.5 21.5
2007 08 28 07 24.75 +32 11.6 0.582 0.746 47.0 98.3 21.0
2007 09 07 07 38.62 +30 49.5 0.677 0.810 53.2 84.8 21.0
2007 09 17 07 56.14 +29 11.2 0.754 0.889 58.6 75.0 21.0
2007 09 27 08 13.72 +27 27.6 0.810 0.976 64.1 67.6 21.2
2007 10 07 08 29.62 +25 45.1 0.846 1.066 70.0 61.8 21.3
2007 10 17 08 42.79 +24 09.0 0.864 1.156 76.5 57.0 21.4
2007 10 27 08 52.55 +22 43.1 0.864 1.245 83.8 52.5 21.4
2007 11 06 08 58.26 +21 30.9 0.852 1.331 92.2 48.1 21.4
2007 11 16 08 59.14 +20 35.4 0.829 1.414 101.8 43.2 21.3
2007 11 26 08 54.38 +19 58.7 0.803 1.494 112.8 37.5 21.2
2007 12 06 08 43.38 +19 40.3 0.779 1.570 125.3 30.8 21.1
2007 12 16 08 26.06 +19 37.1 0.764 1.642 139.4 22.9 20.9
2007 12 26 08 03.72 +19 41.3 0.769 1.710 154.7 14.2 20.7
2008 01 05 07 39.16 +19 44.5 0.798 1.775 170.5 5.3 20.5
2008 01 15 07 15.95 +19 42.0 0.855 1.836 173.3 3.6 20.6
2008 01 25 06 57.09 +19 34.2 0.941 1.893 159.0 10.8 21.2
2008 02 04 06 43.93 +19 24.5 1.051 1.946 145.8 16.5 21.7
2008 02 14 06 36.53 +19 15.6 1.180 1.997 134.0 20.9 22.2
Gareth V. Williams (C) Copyright 2007 MPC M.P.E.C. 2007-G49
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