[Iaude] MPEC X03: 2018 WA2 [a=1.85,e=0.53,i=3.0,H=22.64]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Sat Dec 2 09:11:32 EST 2023
M.P.E.C. 2023-X03 Issued 2023 December 2, 14:10 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2018 WA2
Revision to MPEC 2018-X2
Additional Observations:
K18W02A C2023 11 16.49410003 32 14.344+26 01 59.22 21.48wXEX003F51
K18W02A C2023 11 16.50593503 32 12.977+26 02 05.43 20.99wXEX003F51
K18W02A C2023 11 16.53038103 32 10.194+26 02 18.36 21.25wXEX003F51
K18W02A KC2023 11 30.80934002 56 34.730+28 29 20.29 20.2 GVEX003J95
K18W02A KC2023 11 30.81753002 56 32.986+28 29 27.17 20.0 GVEX003J95
K18W02A KC2023 11 30.82599102 56 31.238+28 29 32.68 19.5 GVEX003J95
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
231116 F51 4.18+ 1.50+ 231130 J95 4.91+ 2.73+ MPO782549 +0.84 days
Orbital elements:
2018 WA2 Earth MOID = 0.0047 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 303.27236 (2000.0) P Q
n 0.39265582 Peri. 122.14433 -0.80122346 -0.59806371
a 1.8469764 Node 21.14336 +0.52972793 -0.72372079
e 0.5315488 Incl. 3.01847 +0.27826119 -0.34430801
P 2.51 H 22.64 G 0.15 U 0
Residuals in seconds of arc
181128 G96 0.0 0.2- 181130 L01 0.1+ 0.2+ 181210 T08 1.0+ 0.0
181128 G96 0.1+ 0.1+ 181130 L01 0.2- 0.2+ 181210 T08 0.2- 0.2+
181128 G96 0.1- 0.1- 181130 K88 0.6- 0.4+ 181210 T08 0.4- 0.1-
181128 G96 0.6+ 0.3- 181130 K88 0.1+ 0.0 181211 G40 0.1+ 0.1+
181128 H01 0.0 0.2- 181203 J04 0.0 0.2- 181211 G40 0.2- 0.4-
181128 H01 0.0 0.0 181203 J04 0.0 0.1- 181211 G40 0.1- 0.1+
181128 H01 0.1- 0.1- 181203 J04 0.0 0.0 181212 K38 0.1+ 0.1+
181128 H01 0.1+ 0.1+ 181205 204 0.1- 0.0 181212 K38 0.1+ 0.0
181128 I52 0.0 0.5- 181205 204 0.1+ 0.1- 181212 K38 0.1+ 0.1-
181128 I52 0.4- 0.5+ 181205 204 0.1+ 0.2- 181212 K38 0.4+ 0.1-
181128 I52 1.0- 0.2+ 181205 G96 0.1- 0.4- 181213 I52 0.3- 0.3+
181128 I52 0.0 0.6- 181205 G96 0.2+ 0.5- 181213 I52 0.2- 0.1-
181128 L01 0.9+ 0.7- 181205 G96 0.2+ 0.8- 181213 I52 0.1- 0.1+
181128 L01 0.1- 0.1+ 181205 G96 0.2- 0.7- 181213 I52 0.1- 0.3-
181128 L01 0.2+ 0.1- 181207 H21 0.2+ 0.1+ 181214 T08 0.6+ 0.0
181129 954 0.5+ 1.5+ 181207 H21 0.0 0.1+ 181214 T08 0.6- 0.7+
181129 954 0.9+ 1.8+ 181207 H21 0.1+ 0.2+ 181214 T08 0.7+ 0.5+
181129 954 0.6+ 1.1+ 181208 H21 0.0 0.1- 181214 T08 0.2- 0.0
181129 954 0.8+ 1.7+ 181208 H21 0.3+ 0.1+ 181220 703 0.2+ 0.7-
181129 954 0.7+ 2.0+ 181208 H21 0.1+ 0.1- 181220 703 0.0 0.5+
181129 954 0.1+ 1.2+ 181209 G40 0.3+ 0.2- 181220 703 0.1+ 0.3-
181129 954 0.1+ 1.0+ 181209 G40 0.1+ 0.2- 181220 703 0.6+ 0.3-
181129 954 0.5+ 1.8+ 181209 G40 0.0 0.3+ 181220 I52 0.1- 0.1-
181129 954 1.1+ 1.5+ 181209 G96 0.1- 0.1- 181220 I52 0.1+ 0.3+
181129 954 0.8+ 1.6+ 181209 G96 0.0 0.1- 181220 I52 0.2- 0.1-
181129 I52 0.5- 0.3- 181209 G96 0.0 0.1- 181220 I52 0.0 0.1+
181129 I52 0.2+ 0.1+ 181209 G96 1.3- 0.9+ 231116 F51 0.1+ 0.2-
181129 I52 0.1- 0.1- 181210 I52 0.4- 0.2- 231116 F51 0.0 0.2-
181129 I52 0.2+ 0.1+ 181210 I52 0.1+ 0.2- 231116 F51 0.2+ 0.0
181129 H36 0.8- 0.2- 181210 I52 0.1+ 0.1+ 231130 J95 0.0 0.3-
181129 H36 0.5- 0.3+ 181210 I52 0.3- 0.2+ 231130 J95 0.4- 0.6+
181130 L01 0.2+ 0.1- 181210 T08 0.5- 0.4- 231130 J95 0.1+ 0.0
Ephemeris:
2018 WA2 a,e,i = 1.85, 0.53, 3 q = 0.8652
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 11 02 03 48 35.7 +24 01 50 0.4557 1.4260 158.4 14.8 22.5
...
2023 11 17 03 31 21.7 +26 06 39 0.3203 1.3072 172.6 5.6 21.2
...
2023 11 25 03 13 50.9 +27 26 07 0.2616 1.2438 167.4 10.0 20.8
...
2023 12 01 02 55 55.0 +28 31 48 0.2233 1.1968 158.6 17.5 20.7
2023 12 02 02 52 27.9 +28 43 11 0.2173 1.1891 156.9 19.0 20.7
2023 12 03 02 48 52.1 +28 54 40 0.2115 1.1813 155.3 20.4 20.6
...
2023 12 09 02 23 55.4 +30 04 58 0.1792 1.1355 144.4 30.4 20.5
...
2023 12 17 01 39 17.2 +31 35 29 0.1420 1.0766 127.5 46.5 20.3
...
2024 01 01 23 10 25.5 +30 42 17 0.09146 0.9776 83.8 90.9 20.6
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-X03
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