[Iaude] MPEC A166: 2013 AK20 [a=1.35,e=0.22,i=17.8,H=23.16]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Mon Jan 15 09:13:19 EST 2024
M.P.E.C. 2024-A166 Issued 2024 January 15, 14:11 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
2013 AK20
Revision to MPEC 2013-A31
Additional Observations:
K13A20K C2023 12 10.62844509 44 22.551-06 21 09.59 21.70GVEA166F52
K13A20K C2023 12 10.63887909 44 23.614-06 20 42.97 22.73GVEA166F52
K13A20K C2023 12 14.64654509 51 40.641-03 23 02.60 21.42GVEA166F52
K13A20K C2023 12 14.64719809 51 40.674-03 23 00.63 22.53GVEA166F52
K13A20K C2023 12 23.59813310 05 26.873+04 24 21.35 21.89GVEA166F52
K13A20K C2024 01 12.98475 10 18 46.49 +26 49 20.7 21.2 rVEA166O18
K13A20K C2024 01 12.99122 10 18 46.37 +26 49 46.6 22.4 rVEA166O18
K13A20K C2024 01 12.99770 10 18 46.27 +26 50 12.9 21.2 rVEA166O18
Observer details:
F52 Pan-STARRS 2, Haleakala. Observers J. Herman, 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.
O18 WFST, Lenghu. Observers Z. Lou, Z. Q. Li, S. X. Li, Q. Y. Hai. Measurers
B. Li, H. B. Zhao, Z. J. Xu, G. T. Zhaori. 2.5-m f/2.48 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
231210 F52 0.29- 0.21- 240112 O18 0.43- 0.09- MPO750185 -0.12 days
Orbital elements:
2013 AK20 Earth MOID = 0.1550 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 334.05538 (2000.0) P Q
n 0.62880291 Peri. 296.90929 +0.66127863 -0.69165702
a 1.3493554 Node 108.51097 +0.74964045 +0.59518677
e 0.2231579 Incl. 17.83183 +0.02738186 +0.40910057
P 1.57 H 23.16 G 0.15 U 1
Residuals in seconds of arc
121223 F51 0.2+ 0.2+ 130105 104 0.4+ 0.0 130114 J04 0.1+ 0.2-
121223 F51 0.2+ 0.1- 130106 204 0.0 0.2+ 130114 J04 0.2+ 0.1-
130105 G96 1.4- 0.2+ 130106 204 0.8- 0.1- 130120 291 0.1+ 0.0
130105 G96 0.5- 0.3- 130106 H01 0.0 0.0 130120 291 0.1+ 0.1+
130105 G96 0.2+ 0.3- 130106 H01 0.1- 0.1- 130120 291 0.0 0.1+
130105 G96 0.4- 0.1+ 130106 H01 0.1+ 0.2+ 231210 F52 0.1- 0.3-
130105 H01 0.1+ 0.0 130106 H01 0.0 0.1+ 231210 F52 0.2- 0.0
130105 H01 0.0 0.1+ 130107 B74 0.4- 0.7+ 231214 F52 0.4+ 0.1-
130105 H01 0.2+ 0.2- 130107 B74 0.4+ 0.0 231214 F52 0.0 0.0
130105 H01 0.2+ 0.1- 130107 B74 0.4+ 0.7- 231223 F52 0.1+ 0.1-
130105 H21 0.1+ 0.8+ 130107 291 0.0 0.9+ 240112 O18 0.2+ 0.1+
130105 H21 0.2- 0.2- 130107 291 0.1+ 0.1+ 240112 O18 0.0 0.2-
130105 104 1.2+ 0.8- 130107 291 0.4+ 0.4- 240112 O18 0.0 0.2-
130105 104 0.6+ 0.6- 130114 J04 0.0 0.2-
Ephemeris:
2013 AK20 a,e,i = 1.35, 0.22, 18 q = 1.0482
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 12 16 09 53 59.8 -02 18 33 0.2935 1.1244 111.2 54.7 22.7
...
2023 12 31 10 13 38.7 +12 01 20 0.2688 1.1672 127.7 41.8 22.3
...
2024 01 08 10 18 23.1 +21 04 42 0.2661 1.1921 137.1 34.2 22.1
...
2024 01 14 10 18 37.6 +27 58 34 0.2706 1.2115 143.4 29.0 22.0
2024 01 15 10 18 22.5 +29 05 58 0.2719 1.2148 144.3 28.2 22.0
2024 01 16 10 18 02.4 +30 12 35 0.2735 1.2181 145.1 27.5 22.0
...
2024 01 22 10 14 18.7 +36 29 19 0.2864 1.2380 148.8 24.3 22.0
...
2024 01 30 10 05 13.2 +43 26 07 0.3131 1.2649 149.6 23.2 22.2
...
2024 02 14 09 41 36.7 +51 09 29 0.3881 1.3157 142.2 27.4 22.9
A. U. Tomatic (C) Copyright 2024 MPC M.P.E.C. 2024-A166
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