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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 26 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1294431141071192 | 3.7157e-08 | |
| a | 2.262616722610665 | 7.6523e-09 | au |
| q | 1.969736568005097 | 8.4322e-08 | au |
| i | 4.318781698548895 | 3.6665e-06 | deg |
| node | 277.1765350386747 | 5.3706e-05 | deg |
| peri | 110.3184751673674 | 5.5729e-05 | deg |
| M | 316.5134756870345 | 1.6882e-05 | deg |
| tp | 2459150.664444133930
(2020-Oct-28.16444413) | 5.8669e-05 | TDB |
| period | 1243.125330025444
3.40 | 6.3065e-06
1.727e-08 | d
yr |
| n | .2895926832997856 | 1.4691e-09 | deg/d |
| Q | 2.555496877216233 | 8.6428e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.7 |
|
n/a |
MPO324351 |
|
| diameter |
diameter |
3.583 |
km |
0.702 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| geometric albedo |
albedo |
0.500 |
|
0.174 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
|
| 4788 Simpson (1986 TL1) Discovered 1986-Oct-04 by Bowell, E. at Flagstaff |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| 1986 TL1 = 1976 YJ1 = 1979 RN1 = 1984 AS |
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