[Iaude] MPEC U166: 2018 PB20 [a=2.92,e=0.58,i=7.4,H=22.71]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Sat Oct 21 10:18:34 EDT 2023
M.P.E.C. 2023-U166 Issued 2023 October 21, 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 PB20
Revision to MPEC 2018-P77
Additional Observations:
K18P20B C2023 10 16.53007903 31 48.316-08 35 41.41 22.20wXEU166F52
K18P20B C2023 10 16.54108603 31 48.269-08 35 30.51 22.16wXEU166F52
K18P20B C2023 10 16.55203603 31 48.227-08 35 19.56 22.35wXEU166F52
K18P20B 0C2023 10 17.58070103 31 52.533-08 18 13.23 21.93GVEU166T12
K18P20B 0C2023 10 17.58226803 31 52.522-08 18 11.60 21.97GVEU166T12
K18P20B 0C2023 10 17.58389703 31 52.512-08 18 09.97 21.88GVEU166T12
Observer details:
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, 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.
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
231016 F52 0.10+ 0.06+ 231017 T12 0.10+ 0.06+ E2023-R13 -0.00 days
Orbital elements:
2018 PB20 Earth MOID = 0.2623 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 359.96655 (2000.0) P Q
n 0.19778611 Peri. 262.37162 +0.99162535 +0.01942938
a 2.9174641 Node 96.45243 +0.03098237 +0.92396024
e 0.5798326 Incl. 7.38245 -0.12537646 +0.38199474
P 4.98 H 22.71 G 0.15 U 0
Residuals in seconds of arc
180808 F51 0.1- 0.1+ 180811 474 0.2+ 0.4- 181018 V06 0.2+ 0.1-
180808 F51 0.2- 0.1+ 180811 474 0.1- 0.7+ 181018 V06 0.2+ 0.0
180808 F51 0.0 0.0 180831 695 0.1- 0.1+ 181018 V06 0.3- 0.4+
180810 807 0.1- 0.1- 180831 695 0.3+ 0.1- 181018 V06 0.1- 0.3-
180810 807 0.0 0.1- 180831 695 0.2+ 0.7+ 231016 F52 0.0 0.0
180810 807 0.2- 0.1+ 180908 T12 0.2- 0.0 231016 F52 0.1- 0.0
180810 568 0.0 0.0 181001 474 0.3+ 0.2- 231016 F52 0.1- 0.1+
180810 568 0.0 0.0 181001 474 0.2- 0.3+ 231017 T12 0.0 0.0
180810 568 0.0 0.0 181001 474 0.1- 0.1- 231017 T12 0.0 0.0
180811 474 0.3+ 0.1- 181001 474 0.1+ 0.2- 231017 T12 0.0 0.0
Ephemeris:
2018 PB20 a,e,i = 2.92, 0.58, 7 q = 1.2258
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 09 21 03 05 41.4 -14 11 37 0.3132 1.2293 130.0 38.7 22.2
...
2023 10 06 03 27 03.1 -11 14 31 0.3239 1.2550 136.5 33.2 22.1
...
2023 10 14 03 31 20.8 -09 16 21 0.3355 1.2783 141.8 28.9 22.1
...
2023 10 20 03 31 50.4 -07 36 47 0.3477 1.2997 146.3 25.2 22.1
2023 10 21 03 31 43.9 -07 19 18 0.3501 1.3036 147.1 24.5 22.1
2023 10 22 03 31 34.6 -07 01 35 0.3526 1.3075 147.9 23.9 22.1
...
2023 10 28 03 29 47.8 -05 10 51 0.3697 1.3330 152.6 20.0 22.2
...
2023 11 05 03 25 50.7 -02 34 29 0.3994 1.3711 158.5 15.4 22.2
...
2023 11 20 03 17 39.6 +02 25 30 0.4807 1.4532 162.1 12.0 22.7
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-U166
More information about the Iaude
mailing list