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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .04963942773171375 | 4.5717e-08 | |
| a | 5.150411015829468 | 1.2245e-07 | au |
| q | 4.894747560420579 | 3.1663e-07 | au |
| i | 11.60672377981457 | 6.8229e-06 | deg |
| node | 44.26175773950532 | 2.8232e-05 | deg |
| peri | 64.59563479897977 | 9.09e-05 | deg |
| M | 258.9463271366128 | 8.8976e-05 | deg |
| tp | 2460198.925003189597
(2023-Sep-11.42500319) | 0.0010759 | TDB |
| period | 4269.345080920531
11.69 | 0.00015225
4.168e-07 | d
yr |
| n | .08432206654102996 | 3.007e-09 | deg/d |
| Q | 5.406074471238358 | 1.2852e-07 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.4 |
|
n/a |
MPO439356 |
|
| diameter |
diameter |
13.211 |
km |
1.077 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G) |
|
| geometric albedo |
albedo |
0.122 |
|
0.029 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G) |
|
|
| 38598 (1999 XQ208) Discovered 1999-Dec-13 by LINEAR at Socorro |
| Reference: 20020328/Numbers.arc | Last Updated: 2004-04-19 |
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