MPEC 2019-B86 : 2018 NB4
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M.P.E.C. 2019-B86 Issued 2019 Jan. 26, 00:26 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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 NB4
Revision to MPEC 2018-N85
Additional Observations:
K18N04B C2015 08 21.37137720 50 27.107-32 16 16.46 22.2 GVEB086F51
K18N04B C2015 08 21.38134220 50 26.299-32 16 12.65 22.6 GVEB086F51
K18N04B C2015 08 21.39126920 50 25.488-32 16 08.63 22.1 GVEB086F51
K18N04B C2015 08 21.40118420 50 24.699-32 16 05.02 22.1 GVEB086F51
K18N04B C2017 11 21.63025311 56 43.723+08 34 21.29 22.2 GVEB086F51
K18N04B C2017 11 21.63411611 56 44.411+08 34 14.64 22.4 GVEB086F51
K18N04B C2017 11 21.63796711 56 45.133+08 34 08.43 22.3 GVEB086F51
K18N04B C2017 12 23.63969313 43 36.420-07 55 39.53 21.4 GVEB086F51
K18N04B C2017 12 23.64879413 43 38.347-07 55 57.96 22.1 GVEB086F51
K18N04B C2017 12 23.65334313 43 39.274-07 56 06.90 22.2 GVEB086F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe,
E. Magnier, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber,
Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
150821 F51 0.05- 0.02- 171223 F51 0.0+ 0.1+ MPO452021 +0.00088 day
Orbital elements:
2018 NB4 Earth MOID = 0.1549 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 147.64676 (2000.0) P Q
n 0.32652777 Peri. 204.03099 -0.96817405 +0.24682694
a 2.0886033 Node 349.98867 -0.17307568 -0.77983357
e 0.4570413 Incl. 13.78331 -0.18078666 -0.57527042
P 3.02 H 19.5 G 0.15 U 1
Residuals in seconds of arc
150821 F51 0.0 0.3- 180710 F51 0.1+ 0.1- 180714 807 0.2- 0.2+
150821 F51 0.0 0.1- 180710 F51 0.2- 0.1- 180714 807 0.0 0.1+
150821 F51 0.1- 0.2+ 180712 J04 0.1+ 0.1+ 180714 474 0.3+ 0.2+
150821 F51 0.1+ 0.1+ 180712 807 0.1- 0.1- 180714 474 0.1- 0.0
171121 F51 0.4+ 0.1+ 180712 807 0.0 0.2- 180714 474 0.4- 0.1+
171121 F51 0.2- 0.1- 180712 807 0.1- 0.0 180905 807 0.1+ 0.1-
171121 F51 0.2- 0.0 180712 474 0.1+ 0.2+ 180905 807 0.2+ 0.1-
171223 F51 0.1+ 0.2+ 180712 474 0.2- 0.1+ 180905 807 0.2- 0.6-
171223 F51 0.2+ 0.2- 180712 474 0.3- 0.1- 180906 807 0.2+ 0.0
171223 F51 0.3- 0.1- 180712 474 0.4+ 0.1- 180906 807 0.7+ 0.1+
180710 F51 0.0 0.0 180714 807 0.1- 0.1+ 180906 807 0.2+ 0.2+
Ephemeris:
2018 NB4 a,e,i = 2.09, 0.46, 14 q = 1.1340
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 12 27 21 52 06.7 -14 46 10 3.2039 2.6841 50.3 16.4 25.1
...
2019 01 11 22 12 10.0 -12 22 07 3.4058 2.7319 40.4 13.5 25.1
...
2019 01 19 22 22 56.8 -11 03 42 3.5016 2.7560 35.2 11.9 25.1
...
2019 01 25 22 31 02.3 -10 04 18 3.5674 2.7734 31.3 10.6 25.1
2019 01 26 22 32 23.2 -09 54 21 3.5779 2.7763 30.6 10.4 25.1
2019 01 27 22 33 44.2 -09 44 24 3.5882 2.7791 30.0 10.2 25.1
...
2019 02 02 22 41 49.4 -08 44 23 3.6469 2.7958 26.1 8.9 25.1
...
2019 02 10 22 52 34.9 -07 23 49 3.7164 2.8171 21.0 7.2 25.1
...
2019 02 25 23 12 35.4 -04 51 42 3.8180 2.8545 11.4 3.9 25.0
A. U. Tomatic (C) Copyright 2019 MPC M.P.E.C. 2019-B86
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