MPEC 2023-C20 : 2017 UW4
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M.P.E.C. 2023-C20 Issued 2023 February 2, 14:04 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@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2017 UW4
Revision to MPEC 2017-U192
Additional Observations:
K17U04W 0C2023 01 20.50958910 56 58.991+32 36 48.59 23.57GVEC020T12
K17U04W 0C2023 01 20.51992810 56 58.410+32 37 01.75 23.75GVEC020T12
K17U04W 0C2023 01 22.55834210 55 09.582+33 19 04.28 23.29GVEC020T12
K17U04W 0C2023 01 22.58013710 55 08.182+33 19 30.76 23.24GVEC020T12
Observer details:
T12 University of Hawaii 88-inch telescope, Maunakea. Observers D. Hung, D.
J. Tholen. 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 (or two decimals in degrees), reference and Delta-T
230120 T12 0.05- 0.03- 230122 T12 0.05- 0.03- MPO435140 -0.05 days
Orbital elements:
2017 UW4 Earth MOID = 0.1671 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 56.51736 (2000.0) P Q
n 0.40026870 Peri. 325.89202 +0.64866876 -0.73135084
a 1.8234826 Node 82.70500 +0.73703148 +0.53464867
e 0.3819210 Incl. 12.25860 +0.18977204 +0.42341085
P 2.46 H 22.50 G 0.15 U 0
Residuals in seconds of arc
170926 F51 0.1- 0.1+ 171025 291 0.1- 0.2+ 171223 G96 0.5+ 0.1-
170926 F51 0.2- 0.0 171026 V06 0.2+ 0.2- 171223 G96 0.3+ 0.5-
170926 F51 0.1- 0.3+ 171026 V06 0.0 0.2+ 171223 G96 0.1- 0.3+
171022 F51 0.0 0.1+ 171026 V06 0.2+ 0.1- 171226 F51 0.0 0.0
171022 F51 0.1- 0.0 171026 V06 0.0 0.2+ 171226 F51 0.0 0.1+
171022 F51 0.0 0.1+ 171112 807 0.2- 0.1+ 171226 F51 0.0 0.0
171023 926 0.2+ 0.1- 171112 807 0.0 0.2- 171226 F51 0.1- 0.0
171023 926 0.3+ 0.2- 171112 807 0.0 0.0 171230 G96 0.1+ 0.1-
171023 926 0.1- 0.0 171213 691 0.2- 0.2- 171230 G96 0.8- 0.7+
171024 926 0.1- 0.7- 171213 691 0.1+ 0.2- 171230 G96 0.1- 0.2-
171024 926 0.4- 0.4- 171213 691 0.2+ 0.0 171230 G96 0.4+ 0.1+
171024 926 0.0 0.0 171215 G96 0.0 0.2+ 230120 T12 0.0 0.1-
171024 691 0.8+ 0.0 171215 G96 0.3- 0.1- 230120 T12 0.0 0.0
171024 691 0.1+ 0.2+ 171215 G96 0.1- 0.0 230122 T12 0.0 0.0
171025 291 0.3+ 0.0 171215 G96 0.1+ 0.2+ 230122 T12 0.0 0.0
171025 291 0.2+ 0.4+ 171223 G96 0.2+ 0.1-
Ephemeris:
2017 UW4 a,e,i = 1.82, 0.38, 12 q = 1.1271
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 01 03 11 00 41.1 +26 24 53 0.5904 1.4016 124.0 35.6 23.5
...
2023 01 18 10 58 49.4 +31 43 47 0.5920 1.4786 138.2 26.4 23.4
...
2023 01 26 10 51 31.3 +34 27 09 0.6042 1.5205 145.3 21.7 23.4
...
2023 02 01 10 43 39.2 +36 14 01 0.6200 1.5521 149.6 18.7 23.4
2023 02 02 10 42 11.1 +36 30 00 0.6232 1.5573 150.2 18.3 23.4
2023 02 03 10 40 40.9 +36 45 24 0.6267 1.5626 150.8 17.9 23.4
...
2023 02 09 10 31 04.8 +38 04 26 0.6510 1.5941 153.0 16.3 23.5
...
2023 02 17 10 17 43.4 +39 10 59 0.6938 1.6361 152.8 16.0 23.6
...
2023 03 04 09 56 33.8 +39 19 01 0.8058 1.7136 144.7 19.5 24.2
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-C20
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