MPEC 2019-A145: 2016 NZ55
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M.P.E.C. 2019-A145 Issued 2019 Jan. 10, 11:31 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
2016 NZ55
Revision to MPEC 2016-O399
Additional Observations:
K16N55Z KC2019 01 09.00564807 23 23.293-06 05 02.70 21.0 GVEA145J04
K16N55Z KC2019 01 09.00946307 23 22.921-06 04 43.42 20.6 GVEA145J04
K16N55Z KC2019 01 09.40950 07 22 42.18 -05 31 28.3 20.2 RoEA145691
K16N55Z KC2019 01 09.41257 07 22 41.92 -05 31 13.4 20.9 RoEA145691
K16N55Z KC2019 01 09.41563 07 22 41.56 -05 30 57.9 20.0 RoEA145691
K16N55Z KC2019 01 09.92003407 21 53.876-04 48 47.95 20.4 GVEA145J04
K16N55Z KC2019 01 09.92194907 21 53.677-04 48 38.64 20.1 GVEA145J04
K16N55Z KC2019 01 09.92386407 21 53.490-04 48 28.71 20.3 GVEA145J04
Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch. Observer M. J. Brucker.
0.9-m f/3 reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers
M. Micheli, D. Koschny, A. Knoefel, M. Busch, E. Schwab. 1.0-m f/4.4
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
190109 J04 0.03+ 0.01+ 190109 J04 0.03+ 0.01+ MPO397878 -0.010 day
Orbital elements:
2016 NZ55 Earth MOID = 0.3423 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 98.75534 (2000.0) P Q
n 0.52347647 Peri. 277.98597 +0.65680215 -0.63687012
a 1.5247709 Node 122.64579 +0.72632259 +0.67820840
e 0.2553113 Incl. 28.65216 -0.20264853 +0.36664673
P 1.88 H 21.2 G 0.15 U 3
Residuals in seconds of arc
160713 F51 0.1- 0.1+ 160802 807 0.0 0.4+ 160923 807 0.6- 0.9-
160713 F51 0.0 0.0 160802 807 0.0 0.6+ 160923 807 0.5- 0.4-
160713 F51 0.0 0.2+ 160802 807 0.1+ 0.6+ 161202 807 0.3+ 0.4+
160713 F51 0.2- 0.1+ 160804 807 0.0 0.4+ 161202 807 0.4- 0.2+
160715 807 0.1- 0.0 160804 807 0.0 0.5+ 161202 807 0.2- 0.7-
160715 807 0.1- 0.2+ 160822 807 0.2+ 0.2+ 190109 J04 0.2- 0.1+
160715 807 0.0 0.2+ 160822 807 0.4+ 0.2+ 190109 J04 0.4+ 0.4+
160724 291 0.3- 0.2+ 160822 807 0.3+ 0.6+ 190109 691 0.5- 0.1+
160724 291 0.1- 0.6+ 160904 807 0.9+ 0.3- 190109 691 0.4+ 0.3-
160724 291 0.2- 0.4+ 160904 807 0.5+ 0.3+ 190109 691 0.1- 0.2-
160726 691 0.3+ 0.5+ 160904 807 0.8+ 0.1- 190109 J04 0.0 0.1+
160726 691 0.1- 1.1- 160905 807 0.4- 0.0 190109 J04 0.0 0.2-
160726 691 0.1+ 1.7- 160905 807 0.2- 0.3+ 190109 J04 0.2+ 0.2+
160726 691 0.3+ 1.6- 160905 807 0.3- 0.6+
160726 691 0.0 0.1- 160923 807 0.1- 0.1+
Ephemeris:
2016 NZ55 a,e,i = 1.52, 0.26, 29 q = 1.1355
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 12 11 07 59 46.5 -33 46 57 0.4358 1.2080 110.4 49.8 21.7
...
2018 12 26 07 45 12.2 -22 55 14 0.3715 1.2509 129.0 37.7 21.1
...
2019 01 03 07 33 13.6 -14 01 20 0.3496 1.2763 141.8 28.5 20.7
...
2019 01 09 07 23 23.5 -06 05 21 0.3438 1.2963 151.7 21.1 20.5
2019 01 10 07 21 45.0 -04 41 57 0.3439 1.2997 153.2 19.9 20.4
2019 01 11 07 20 07.1 -03 17 54 0.3443 1.3031 154.7 18.8 20.4
...
2019 01 17 07 10 46.6 +05 08 28 0.3542 1.3239 161.2 13.9 20.3
...
2019 01 25 07 00 27.3 +15 34 33 0.3865 1.3523 159.0 15.1 20.6
...
2019 02 09 06 51 16.6 +29 49 25 0.4960 1.4070 141.0 26.2 21.6
A. U. Tomatic (C) Copyright 2019 MPC M.P.E.C. 2019-A145
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