[Iaude] MPEC T45: 2020 WB5 [a=2.23,e=0.45,i=22.6,H=20.51]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Fri Oct 6 10:07:44 EDT 2023
M.P.E.C. 2023-T45 Issued 2023 October 6, 14:06 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
2020 WB5
Revision to MPEC 2020-W173
Additional Observations:
K20W05B 0C2023 09 19.41086921 49 10.179+26 01 30.27 23.09GVET045T12
K20W05B 0C2023 09 19.42173921 49 09.494+26 01 21.21 23.12GVET045T12
K20W05B 0C2023 09 19.43260421 49 08.813+26 01 12.02 23.35GVET045T12
K20W05B 0C2023 09 19.44357821 49 08.129+26 01 02.83 23.08GVET045T12
K20W05B 0C2023 09 20.25183421 48 20.841+25 49 42.56 23.09GVET045T12
K20W05B 0C2023 09 20.26283221 48 20.167+25 49 33.33 22.97GVET045T12
K20W05B 0C2023 09 20.27251821 48 19.566+25 49 25.07 23.17GVET045T12
Observer details:
T12 University of Hawaii 88-inch telescope, Maunakea. Observer D. Hung.
Measurer 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, reference and Delta-T
230919 T12 73.5- 38.8- 230920 T12 73.4- 38.9- E2023-O53 +0.05 days
Orbital elements:
2020 WB5 Earth MOID = 0.3133 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 302.79279 (2000.0) P Q
n 0.29509167 Peri. 225.08289 -0.03929279 -0.95529875
a 2.2344197 Node 229.55402 +0.99043989 +0.00157101
e 0.4506612 Incl. 22.64598 +0.13223048 -0.29563799
P 3.34 H 20.51 G 0.15 U 2
Residuals in seconds of arc
201120 C51 0.1+ 0.4- 201216 807 0.2- 0.1- 210113 807 0.0 0.2+
201120 C51 2.0- 1.7- 201216 807 0.0 0.1+ 210205 807 0.1+ 0.1-
201120 C51 1.0+ 1.2+ 201216 807 0.4- 0.2- 210205 807 0.1+ 0.2-
201121 C51 1.7+ 0.1- 201219 807 0.1+ 0.3+ 210205 807 0.2+ 0.0
201121 C51 1.0+ 0.6- 201219 807 0.0 0.1- 210207 807 0.4+ 0.1-
201121 C51 0.2- 1.5+ 201219 807 0.1- 0.0 210207 807 0.1+ 0.2-
201121 C51 2.0- 0.7+ 201220 807 0.4+ 0.5+ 210207 807 0.1+ 0.6-
201122 C51 0.6+ 0.6- 201220 807 0.2- 0.1- 210221 807 0.0 0.1+
201122 C51 0.1+ 0.1- 201220 807 0.1- 0.2- 210221 807 0.1- 0.0
201122 C51 0.0 1.2+ 201222 807 0.4+ 0.2+ 210221 807 0.1- 0.1+
201123 C51 0.5- 0.9- 201222 807 0.4+ 0.3+ 210317 807 0.1- 0.1-
201125 291 0.5- 0.1- 201222 807 0.0 0.2- 210317 807 0.0 0.3+
201125 291 0.1- 0.2- 210104 807 0.1- 0.1+ 210317 807 0.1- 0.3+
201125 291 0.2+ 0.4- 210104 807 0.1- 0.2+ 230919 T12 0.0 0.0
201126 291 0.1+ 0.0 210104 807 0.1+ 0.1+ 230919 T12 0.0 0.1+
201126 291 0.1+ 0.1+ 210105 807 0.3- 0.1+ 230919 T12 0.0 0.0
201126 291 0.0 0.1+ 210105 807 0.2+ 0.1+ 230919 T12 0.0 0.1+
201205 V06 0.6+ 0.3- 210112 807 0.0 0.1+ 230920 T12 0.0 0.1+
201205 V06 0.2- 0.2+ 210112 807 0.7- 0.7- 230920 T12 0.0 0.1+
201205 V06 0.1+ 0.2- 210113 807 0.0 0.1+ 230920 T12 0.1- 0.0
201205 V06 0.2- 0.1+ 210113 807 0.0 0.1+
Ephemeris:
2020 WB5 a,e,i = 2.23, 0.45, 23 q = 1.2275
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 09 06 22 04 14.8 +28 26 30 1.2564 2.1466 142.6 16.6 23.6
...
2023 09 21 21 47 37.2 +25 38 59 1.1914 2.0648 140.1 18.2 23.4
...
2023 09 29 21 40 58.3 +23 32 19 1.1750 2.0202 136.1 20.1 23.4
...
2023 10 05 21 37 28.8 +21 46 11 1.1704 1.9864 132.3 21.9 23.4
2023 10 06 21 37 02.1 +21 27 51 1.1702 1.9808 131.6 22.2 23.4
2023 10 07 21 36 37.9 +21 09 22 1.1702 1.9751 130.9 22.5 23.4
...
2023 10 13 21 35 05.8 +19 16 32 1.1734 1.9410 126.5 24.4 23.4
...
2023 10 21 21 35 28.5 +16 45 20 1.1856 1.8951 120.4 27.0 23.5
...
2023 11 05 21 43 28.2 +12 21 14 1.2264 1.8083 108.8 31.3 23.6
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-T45
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