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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.
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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .07667092090963375 | 3.0528e-08 | |
a | 2.196495354180051 | 7.0598e-09 | au |
q | 2.028088032601334 | 6.6378e-08 | au |
i | 3.628598414150484 | 4.3555e-06 | deg |
node | 340.1805918976954 | 5.0353e-05 | deg |
peri | 233.4927159829727 | 5.8424e-05 | deg |
M | 158.7840301606059 | 2.9904e-05 | deg |
tp | 2458076.057136040415 (2017-Nov-18.55713604) | 9.8466e-05 | TDB |
period | 1189.03286958068 3.26 | 5.7325e-06 1.569e-08 | d yr |
n | .3027670716344086 | 1.4597e-09 | deg/d |
Q | 2.364902675758767 | 7.601e-09 | au |
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| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
14.8 |
|
n/a |
MPO347848 |
|
diameter |
diameter |
2.336 |
km |
0.541 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
geometric albedo |
albedo |
0.468 |
|
0.236 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
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|
46788 (1998 HP139) Discovered 1998-Apr-21 by LINEAR at Socorro |
Reference: 20020921/Numbers.arc | Last Updated: 2004-04-19 |
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Alternate Designations
1998 HP139 = 1985 DG2 = 1999 UB17 |
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