[Iaude] MPEC W87: 2018 WH2 [a=1.84,e=0.43,i=16.0,H=22.98]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Wed Nov 22 09:19:07 EST 2023
M.P.E.C. 2023-W87 Issued 2023 November 22, 14:17 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 WH2
Revision to MPEC 2018-X6
Additional Observations:
K18W02H KC2023 11 06.45179908 39 12.618+40 49 07.28 21.69GVEW087I52
K18W02H KC2023 11 06.45721008 39 12.812+40 48 37.04 21.87GVEW087I52
K18W02H KC2023 11 06.46262908 39 12.802+40 48 07.81 21.51GVEW087I52
K18W02H KC2023 11 06.46805808 39 12.902+40 47 38.98 21.99GVEW087I52
K18W02H 0C2023 11 17.60156408 40 00.243+23 53 49.21 21.96GVEW087T12
K18W02H 0C2023 11 17.60281208 40 00.198+23 53 42.67 21.86GVEW087T12
K18W02H 0C2023 11 17.60407308 40 00.146+23 53 35.96 21.99GVEW087T12
Observer details:
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. C. Beshore, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs,
A. D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G.
J. Leonard, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m
prime focus + CCD.
T12 University of Hawaii 88-inch telescope, Maunakea. Observer D. J. Tholen.
2.24-m f/10.1 reflector + 2112 x 2112 pixels STA1600 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
231106 I52 0.06- 0.32- 231117 T12 0.12- 0.21- MPO750185 -0.01 days
Orbital elements:
2018 WH2 Earth MOID = 0.0879 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 343.25219 (2000.0) P Q
n 0.39648622 Peri. 150.85526 +0.74737527 -0.61263952
a 1.8350616 Node 249.24421 +0.54380396 +0.78638400
e 0.4304776 Incl. 15.95900 +0.38171647 +0.07920248
P 2.49 H 22.98 G 0.15 U 0
Residuals in seconds of arc
181128 G96 0.3- 0.0 181130 Z99 0.4+ 0.2- 181206 T05 0.4- 0.0
181128 G96 0.1+ 0.0 181130 K88 (1.4- 0.2+) 181206 T05 0.2- 0.3+
181128 G96 0.0 0.0 181130 K88 0.2- 0.2+ 181206 T05 0.1+ 0.0
181128 G96 0.0 0.0 181130 K88 0.8+ 0.0 181206 T05 0.2+ 0.4-
181129 G96 0.0 0.0 181130 Z99 0.7+ 0.4- 181207 H21 0.1+ 0.2+
181129 G96 0.2- 0.1+ 181130 J69 0.2- 0.1+ 181207 H21 0.1- 0.1+
181129 G96 0.2+ 0.6- 181130 Z99 0.1- 0.1+ 181207 H21 0.0 0.1+
181129 G96 0.0 0.1- 181130 J69 0.3- 0.1- 181209 I52 0.0 0.0
181129 I52 0.2- 0.1- 181130 Z99 0.1- 0.3+ 181209 I52 0.1- 0.0
181129 I52 0.1+ 0.0 181130 J69 0.3- 0.3- 181209 I52 0.2- 0.2-
181129 I52 0.2+ 0.0 181130 J69 0.2+ 0.5- 181210 I52 0.1- 0.1-
181129 I52 0.3+ 0.1+ 181130 J69 0.6+ 0.6- 181210 I52 0.2- 0.1-
181129 T05 0.2+ 0.1+ 181130 C23 0.1- 0.7+ 181210 I52 0.2- 0.5-
181129 T05 0.1- 0.2- 181130 C23 0.3+ 0.2- 181210 I52 0.2- 0.0
181129 T05 0.3- 0.2- 181130 C23 0.1- 1.2- 181210 703 0.4+ 0.6+
181129 T05 0.0 0.4+ 181130 C23 0.3- 1.1+ 181210 703 0.3- 0.1-
181129 P93 0.3- 0.1+ 181130 C23 0.5+ 2.6- 181210 703 0.1- 0.3-
181129 P93 0.2+ 0.1- 181130 C23 0.3- 1.8+ 181213 I52 0.2- 0.2-
181129 P93 0.3- 0.3- 181130 C23 1.3+ 0.0 181213 I52 0.5- 0.6-
181129 P93 0.7+ 0.4- 181130 Z80 0.3- 0.0 181213 I52 0.0 0.2-
181129 P93 0.3+ 0.3- 181130 Z80 0.1- 0.5+ 181214 G96 0.1- 0.3+
181129 L04 0.0 0.1+ 181130 Z80 0.3- 0.1+ 181214 G96 0.2- 0.1+
181129 L04 0.0 0.0 181130 Z80 0.2- 0.3+ 181214 G96 0.1+ 0.0
181129 L04 0.1- 0.1+ 181130 Z80 0.1+ 0.0 181214 G96 0.4+ 0.1+
181129 104 0.1+ 0.1+ 181201 C95 0.0 0.4- 181215 F51 0.0 0.0
181129 104 0.1+ 0.2- 181201 C95 0.3+ 0.1- 181215 F51 0.0 0.0
181129 104 0.1- 0.2- 181201 C95 0.4- 0.3+ 181215 F51 0.1- 0.1+
181129 L01 0.0 0.5- 181201 C95 0.1+ 0.4+ 181228 807 0.0 0.1+
181129 L01 0.2- 0.1- 181201 C95 0.0 0.2- 181228 807 0.7- 0.1-
181129 L01 0.3- 0.1- 181201 C95 0.0 0.1- 181228 807 0.6- 0.1+
181129 L01 0.1- 0.1- 181201 C95 0.1+ 0.0 190103 F51 0.0 0.1+
181129 Z99 0.4- 0.5- 181201 C95 0.1- 0.1+ 190103 F51 0.1+ 0.2+
181129 Z99 0.1- 0.1+ 181203 T05 0.1+ 0.1+ 190103 F51 0.1+ 0.2-
181129 Z99 0.3+ 0.2+ 181203 T05 0.1+ 0.4- 190104 H21 0.0 0.1-
181129 K38 0.3+ 0.4+ 181203 T05 0.1- 0.1+ 190104 H21 0.0 0.5+
181129 K38 0.1+ 0.2- 181203 T05 0.2- 0.2+ 190104 H21 0.1- 0.1-
181129 585 0.1- 0.5+ 181204 I52 0.2- 0.2- 190105 H21 0.1+ 0.3-
181129 585 0.0 0.2+ 181204 I52 0.1- 0.1- 190105 H21 0.1+ 0.4-
181129 585 0.1- 0.3+ 181204 I52 0.1- 0.2- 190106 H21 0.2+ 0.2-
181129 585 0.1+ 0.2+ 181204 I52 0.1+ 0.2- 190106 H21 0.3+ 0.0
181129 585 0.0 0.2+ 181204 G96 0.1+ 0.0 190106 H21 0.4+ 0.2-
181130 G40 (0.7+ 0.7+) 181204 G96 0.1- 0.1- 231106 I52 0.4- 0.2+
181130 G40 0.5- 0.6+ 181204 G96 0.1- 0.1+ 231106 I52 0.9+ 0.6-
181130 G40 0.2- 0.7+ 181204 G96 0.0 0.0 231106 I52 0.1- 0.4-
181130 G40 0.3+ 0.6+ 181205 I52 0.1+ 0.0 231106 I52 0.2+ 0.3+
181130 P93 0.1+ 0.6+ 181205 I52 0.5+ 0.0 231117 T12 0.0 0.1+
181130 P93 0.8+ 0.5+ 181205 I52 0.3+ 0.3- 231117 T12 0.0 0.1+
181130 P93 0.7+ 0.4+ 181205 I52 0.1- 0.2- 231117 T12 0.1- 0.1+
181130 Z99 0.3+ 0.4- 181206 T05 0.3+ 0.1+
181130 Z99 0.0 0.2- 181206 T05 0.0 0.3-
Ephemeris:
2018 WH2 a,e,i = 1.84, 0.43, 16 q = 1.0451
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 10 23 08 18 43.2 +61 43 41 0.2308 1.0454 96.2 71.2 22.4
...
2023 11 07 08 39 27.2 +39 58 51 0.2132 1.0545 101.5 67.1 22.1
...
2023 11 15 08 40 36.9 +27 46 15 0.2134 1.0697 106.5 62.5 22.0
...
2023 11 21 08 38 32.0 +18 59 17 0.2182 1.0854 111.0 58.2 21.9
2023 11 22 08 37 58.3 +17 35 00 0.2194 1.0884 111.8 57.5 21.9
2023 11 23 08 37 21.1 +16 11 58 0.2207 1.0915 112.5 56.7 21.9
...
2023 11 29 08 32 27.7 +08 23 38 0.2309 1.1117 117.4 52.0 21.9
...
2023 12 07 08 23 01.2 -00 27 06 0.2500 1.1432 123.7 45.8 22.0
...
2023 12 22 07 58 31.8 -11 37 22 0.3019 1.2136 134.2 35.5 22.3
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-W87
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