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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1052930556802878 | 1.2201e-08 | |
a | 3.062962787888711 | 1.2187e-08 | au |
q | 2.740454076516896 | 3.9014e-08 | au |
i | 4.594255206112655 | 1.2522e-06 | deg |
node | 204.7518505600799 | 9.3539e-06 | deg |
peri | 52.12744028585548 | 1.5578e-05 | deg |
M | 334.753159239462 | 1.1451e-05 | deg |
tp | 2459337.814230593957 (2021-May-03.31423059) | 6.2139e-05 | TDB |
period | 1957.992426961028 5.36 | 1.1686e-05 3.199e-08 | d yr |
n | .1838617938674824 | 1.0974e-09 | deg/d |
Q | 3.385471499260527 | 1.347e-08 | au |
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| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
10.95 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
42.006 |
km |
0.390 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
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rotation period |
rot_per |
17.769 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
geometric albedo |
albedo |
0.065 |
|
0.009 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
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1200 Imperatrix (1931 RH) Discovered 1931-Sep-14 by Reinmuth, K. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
1931 RH = 1929 CX = 1950 DC1 = 1957 OY = A913 EC = A915 TL = A924 GC |
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