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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1562226610618339 | 5.9137e-08 | |
| a | 2.248167693718079 | 1.7477e-08 | au |
| q | 1.896952954092195 | 1.3446e-07 | au |
| i | 1.636607088074806 | 6.4092e-06 | deg |
| node | 278.4552990976854 | 0.00024875 | deg |
| peri | 307.8519849896779 | 0.00025051 | deg |
| M | 194.4314969692416 | 2.8009e-05 | deg |
| tp | 2459566.761066169367
(2021-Dec-18.26106617) | 9.9153e-05 | TDB |
| period | 1231.236497820489
3.37 | 1.4357e-05
3.931e-08 | d
yr |
| n | .2923889932090747 | 3.4096e-09 | deg/d |
| Q | 2.599382433343964 | 2.0208e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ hide covariance matrix ]
Orbital Elements at Epoch 2457304.5 (2015-Oct-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1560175140271956 | 5.9163e-08 | |
| q | 1.8975115161425 | 1.3447e-07 | au |
| tp | 2457104.487389911536
(2015-Mar-22.98738991) | 8.7611e-05 | TDB |
| node | 278.504720399591 | 0.00024894 | deg |
| peri | 307.8740873371441 | 0.00025071 | deg |
| i | 1.635685322485527 | 6.4076e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
3.500213531454505E-15 |
-7.90758718202997E-15 |
-1.419650995778284E-12 |
-5.039410008288862E-15 |
-5.19642416454033E-13 |
-1.558227462231442E-15 |
| q |
-7.90758718202997E-15 |
1.808228924550523E-14 |
3.539746065103794E-12 |
6.456228800674021E-15 |
1.293472632321189E-12 |
3.689809902780065E-15 |
| tp |
-1.419650995778284E-12 |
3.539746065103794E-12 |
7.675750195631858E-9 |
-2.192999095424765E-11 |
2.644593939194732E-9 |
1.979761420805919E-12 |
| node |
-5.039410008288862E-15 |
6.456228800674021E-15 |
-2.192999095424765E-11 |
6.197126413824033E-8 |
-6.195344501446253E-8 |
2.001958759263672E-10 |
| peri |
-5.19642416454033E-13 |
1.293472632321189E-12 |
2.644593939194732E-9 |
-6.195344501446253E-8 |
6.285550874240906E-8 |
-1.994216992751254E-10 |
| i |
-1.558227462231442E-15 |
3.689809902780065E-15 |
1.979761420805919E-12 |
2.001958759263672E-10 |
-1.994216992751254E-10 |
4.10576920720562E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
17.9 |
|
n/a |
MPO437716 |
|
|
| 441371 (2008 EH21) Discovered 2008-Mar-02 by Spacewatch at Kitt Peak |
| Reference: | Last Updated: 2015-09-02 |
|
|
