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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 18 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2400292714863364 | 4.1824e-08 | |
| a | 2.380030303400492 | 8.0557e-09 | au |
| q | 1.808753363559868 | 1.0148e-07 | au |
| i | 1.984004241341459 | 4.412e-06 | deg |
| node | 338.1716343042939 | 9.802e-05 | deg |
| peri | 354.2341274025589 | 9.8264e-05 | deg |
| M | 318.3088951721693 | 8.1011e-06 | deg |
| tp | 2459355.814878171556
(2021-May-21.31487817) | 3.0623e-05 | TDB |
| period | 1341.133951058921
3.67 | 6.809e-06
1.864e-08 | d
yr |
| n | .2684295626963693 | 1.3628e-09 | deg/d |
| Q | 2.951307243241116 | 9.9893e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
15.89 |
|
n/a |
E2021B55 |
|
| diameter |
diameter |
1.495 |
km |
0.220 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| geometric albedo |
albedo |
0.415 |
|
0.111 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
|
| 102931 (1999 XE41) Discovered 1999-Dec-07 by LINEAR at Socorro |
| Reference: 20051019/Numbers.arc | Last Updated: 2005-10-26 |
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