MPEC 2018-R147: 2008 WP1
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M.P.E.C. 2018-R147 Issued 2018 Sept. 14, 13:44 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
2008 WP1
Revision to MPEC 2008-W19
Additional Observations:
K08W01P C2018 09 12.44716 03 51 34.90 +04 00 27.6 21.6 G ER147G96
K08W01P C2018 09 12.45239 03 51 35.83 +04 00 29.3 21.7 G ER147G96
K08W01P C2018 09 12.45762 03 51 36.70 +04 00 33.2 20.9 G ER147G96
K08W01P C2018 09 12.46287 03 51 37.62 +04 00 35.7 21.2 G ER147G96
K08W01P C2018 09 12.49052 03 51 42.44 +04 00 53.4 21.1 G ER147G96
K08W01P C2018 09 12.49623 03 51 43.44 +04 00 56.8 21.8 G ER147G96
K08W01P C2018 09 12.50055 03 51 44.22 +04 00 59.7 21.6 G ER147G96
K08W01P C2018 09 13.40992 03 54 28.04 +04 10 19.2 21.5 RoER147926
K08W01P C2018 09 13.41883 03 54 29.58 +04 10 24.8 21.7 RoER147926
K08W01P C2018 09 13.42778 03 54 31.14 +04 10 30.4 21.4 RoER147926
K08W01P C2018 09 13.46596 03 54 37.72 +04 10 53.3 21.8 GUER147G96
K08W01P C2018 09 13.46983 03 54 38.42 +04 10 56.2 21.8 GUER147G96
K08W01P C2018 09 13.47194 03 54 38.81 +04 10 57.6 21.6 GUER147G96
K08W01P C2018 09 13.47451 03 54 39.27 +04 10 58.7 21.4 GUER147G96
Observer details:
926 Tenagra II Observatory. Observers M. Schwartz, P. R. Holvorcem. Measurer
M. Schwartz. 0.81-m f/7 Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers B. M. Africano,
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
R. L. Seaman, F. C. Shelly. 1.5-m reflector + 10K CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
180912 G96 1.33- 0.74- 180913 G96 1.34- 0.75- MPO215157 +1.0 day
Orbital elements:
2008 WP1 Earth MOID = 0.2762 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 296.83561 (2000.0) P Q
n 0.29803536 Peri. 330.99670 +0.73502517 -0.66645920
a 2.2196825 Node 71.35476 +0.64472374 +0.62999443
e 0.4325219 Incl. 7.56738 +0.20992691 +0.39867172
P 3.31 H 20.5 G 0.15 U 1
Residuals in seconds of arc
081119 703 0.3+ 0.7- 081122 H55 0.3- 0.2+ 090102 291 0.1+ 0.5+
081119 703 1.3- 1.1- 081122 H55 0.1- 0.4+ 090102 291 0.2+ 0.2-
081119 703 0.5+ 0.7+ 081122 291 0.3- 0.1+ 090116 H55 0.2+ 1.3-
081119 703 0.5- 0.3+ 081122 291 0.4- 0.4+ 090116 H55 0.4- 0.9-
081119 703 0.8- 1.0- 081122 291 0.3- 0.3+ 090116 H55 0.3+ 0.2-
081119 703 (1.5- 0.4-) 081124 H55 0.6- 0.2+ 180912 G96 0.2+ 0.9+
081119 703 0.4- 0.6+ 081124 H55 0.2- 0.5- 180912 G96 0.4+ 0.7-
081119 703 1.0+ 1.1+ 081124 H55 0.0 1.0- 180912 G96 0.2- 0.0
081119 J95 0.9+ 0.8- 081126 H55 0.3- 0.3+ 180912 G96 0.1- 0.7-
081119 J95 0.2+ 1.1- 081126 H55 0.3- 0.4+ 180912 G96 0.0 0.0
081120 682 (2.1+ 2.9+) 081126 H55 0.1+ 0.3+ 180912 G96 0.1+ 0.1-
081120 682 0.2+ 1.1+ 081205 H55 0.1+ 0.1+ 180912 G96 0.5+ 0.2+
081120 682 0.2+ 0.7+ 081205 H55 0.1+ 0.3+ 180913 926 0.2+ 0.2+
081120 645 0.2+ 0.1- 081205 H55 0.5- 1.0+ 180913 926 0.0 0.3+
081120 645 0.1+ 0.2- 081206 291 0.3- 0.1- 180913 926 0.0 0.3+
081120 645 0.1+ 0.0 081206 291 0.1+ 0.1+ 180913 G96 0.9- 0.1-
081120 645 0.1- 0.0 081206 291 0.4+ 0.1- 180913 G96 0.5- 0.4+
081121 291 0.4- 0.8+ 081213 H55 0.1- 0.1- 180913 G96 0.2- 0.5+
081121 291 0.4- 0.8+ 081213 H55 0.3- 0.6+ 180913 G96 0.0 0.0
081121 291 0.5- 0.3+ 081213 H55 0.5- 1.0+
081122 H55 0.1+ 0.3+ 090102 291 0.3- 0.1+
Ephemeris:
2008 WP1 a,e,i = 2.22, 0.43, 8 q = 1.2596
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 08 15 02 27 22.8 -00 36 32 0.7433 1.4209 107.0 43.0 22.3
...
2018 08 30 03 11 16.3 +01 47 01 0.6335 1.3609 109.7 44.3 21.9
...
2018 09 07 03 35 13.8 +03 05 38 0.5837 1.3335 111.0 44.9 21.7
...
2018 09 13 03 53 13.8 +04 06 13 0.5503 1.3154 112.0 45.2 21.5
2018 09 14 03 56 13.3 +04 16 30 0.5450 1.3126 112.2 45.2 21.5
2018 09 15 03 59 12.6 +04 26 51 0.5398 1.3099 112.3 45.3 21.5
...
2018 09 21 04 17 01.0 +05 30 28 0.5105 1.2948 113.4 45.4 21.3
...
2018 09 29 04 40 13.4 +07 00 20 0.4760 1.2787 115.1 45.2 21.1
...
2018 10 14 05 20 21.3 +10 10 46 0.4239 1.2615 119.5 43.5 20.8
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-R147
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