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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 35 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1536280575285813 | 2.4929e-08 | |
| a | 2.204018650862031 | 5.7051e-09 | au |
| q | 1.865419546773333 | 5.3667e-08 | au |
| i | 3.651179848549437 | 3.2665e-06 | deg |
| node | 78.60842390088446 | 5.1604e-05 | deg |
| peri | 233.2028077718088 | 5.3298e-05 | deg |
| M | 18.55776645026341 | 1.3567e-05 | deg |
| tp | 2458938.890947624679
(2020-Mar-30.39094762) | 4.5027e-05 | TDB |
| period | 1195.14699759576
3.27 | 4.6405e-06
1.27e-08 | d
yr |
| n | .3012181771147825 | 1.1696e-09 | deg/d |
| Q | 2.54261775495073 | 6.5816e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.0 |
|
n/a |
MPO384780 |
|
| diameter |
diameter |
5.998 |
km |
0.043 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| geometric albedo |
albedo |
0.373 |
|
0.050 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
|
| 3221 Changshi (1981 XF2) Discovered 1981-Dec-02 by Purple Mountain Observatory at Nanking |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
Alternate Designations
| 1981 XF2 = 1954 KG = 1954 LJ = 1970 GU1 = 1973 DO = 1974 RS1 |
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