MPEC 2023-S205 : 2018 AN18
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M.P.E.C. 2023-S205 Issued 2023 September 25, 11:35 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
2018 AN18
Revision to MPEC 2018-B116
Additional Observations:
K18A18N 1C2022 01 05.28133807 07 09.74 +21 12 06.3 20.53GVES205G96
K18A18N 1C2022 01 05.28700007 07 09.19 +21 12 16.1 20.66GVES205G96
K18A18N 1C2022 01 05.29264307 07 08.67 +21 12 26.1 20.62GVES205G96
K18A18N 1C2022 01 05.29828107 07 08.10 +21 12 35.8 20.67GVES205G96
K18A18N C2022 01 27.26884606 39 47.51 +29 43 26.7 21.70GVES205V00
K18A18N C2022 01 27.27372006 39 47.27 +29 43 31.6 22.34GVES205V00
K18A18N C2022 01 27.27857206 39 47.01 +29 43 36.3 21.99GVES205V00
K18A18N C2022 01 27.28342906 39 46.74 +29 43 41.4 22.18GVES205V00
Observer details:
G96 Mt. Lemmon Survey. Observer A. R. Gibbs. Measurers E. J. Christensen, G.
A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L. Seaman, F. C.
Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
V00 Kitt Peak-Bok. Observer H. Groeller. Measurers M. J. Brucker, E. J.
Christensen, C. E. Woodward, G. A. Farneth, J. B. Fazekas, D. C. Fuls, A.
R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J.
Leonard, R. S. McMillan, D. Rankin, R. L. Seaman, A. Serrano, F. C.
Shelly, K. W. Wierzchos. 2.25-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
220105 G96 0.51- 0.22- 220127 V00 0.41- 0.17- MPO431474 -0.56 days
Orbital elements:
2018 AN18 Earth MOID = 0.5620 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 177.89320 (2000.0) P Q
n 0.23936954 Peri. 276.37588 +0.80910246 -0.37045567
a 2.5689568 Node 106.15955 +0.50893932 +0.82984755
e 0.5001322 Incl. 28.35692 -0.29382645 +0.41727167
P 4.12 H 19.89 G 0.15 U 1
Residuals in seconds of arc
180111 F51 0.1+ 0.1- 180114 568 0.1+ 0.2- 220105 G96 0.2- 0.0
180111 F51 0.1+ 0.1- 180114 568 0.0 0.2- 220105 G96 0.2+ 0.1+
180111 F51 0.1+ 0.2- 180114 568 0.0 0.2- 220105 G96 0.2- 0.1-
180111 F51 0.0 0.2- 180118 F51 0.1+ 0.3+ 220127 V00 0.0 0.1+
180113 F51 0.1- 0.2- 180123 V06 0.1- 0.3- 220127 V00 0.2+ 0.1+
180113 F51 0.0 0.3- 180123 V06 0.3- 0.3- 220127 V00 0.1+ 0.1-
180113 F51 0.0 0.4- 180123 V06 0.2- 0.1- 220127 V00 0.2- 0.0
180113 F51 0.1- 0.2- 220105 G96 0.1- 0.1+
Ephemeris:
2018 AN18 a,e,i = 2.57, 0.50, 28 q = 1.2841
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 08 26 13 15 19.8 +17 53 06 4.5163 3.8502 43.8 10.5 26.8
...
2023 09 10 13 29 00.7 +15 43 22 4.6295 3.8531 35.4 8.7 26.7
...
2023 09 18 13 36 43.9 +14 37 23 4.6758 3.8537 31.4 7.8 26.7
...
2023 09 24 13 42 40.9 +13 49 37 4.7035 3.8538 28.7 7.2 26.7
2023 09 25 13 43 41.1 +13 41 49 4.7076 3.8537 28.3 7.1 26.7
2023 09 26 13 44 41.6 +13 34 03 4.7115 3.8537 27.9 7.0 26.7
...
2023 10 02 13 50 47.7 +12 48 29 4.7312 3.8533 25.7 6.5 26.7
...
2023 10 10 13 59 05.1 +11 50 28 4.7477 3.8521 23.5 5.9 26.7
...
2023 10 25 14 14 58.9 +10 11 15 4.7480 3.8483 22.5 5.7 26.7
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-S205
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