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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 9 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .09041460816732155 | 8.2023e-08 | |
| a | 3.007335253491743 | 4.9449e-08 | au |
| q | 2.735428214919514 | 2.4763e-07 | au |
| i | 9.060025735749983 | 1.2703e-05 | deg |
| node | 204.4741910212235 | 5.3925e-05 | deg |
| peri | 102.1338522376272 | 8.7971e-05 | deg |
| M | 317.1795314704931 | 7.4472e-05 | deg |
| tp | 2459227.079236494614
(2021-Jan-12.57923649) | 0.00039702 | TDB |
| period | 1904.89567114039
5.22 | 4.6982e-05
1.286e-07 | d
yr |
| n | .1889867279631548 | 4.6612e-09 | deg/d |
| Q | 3.279242292063972 | 5.392e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
16.7 |
|
n/a |
MPO471211 |
|
|
| 305946 (2009 HJ17) Discovered 2009-Apr-18 by Spacewatch at Kitt Peak |
| Reference: 20111110/Numbers.arc | Last Updated: 2011-11-14 |
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