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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 33 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1294105997326776 | 7.4989e-09 | |
| a | 2.262436788854652 | 5.2726e-09 | au |
| q | 1.969653487151698 | 1.8788e-08 | au |
| i | 4.318781873846052 | 6.6359e-07 | deg |
| node | 277.1758282007254 | 8.2426e-06 | deg |
| peri | 110.3806215442135 | 1.0236e-05 | deg |
| M | 14.38665741695348 | 7.0212e-06 | deg |
| tp | 2459150.826986349356
(2020-Oct-28.32698635) | 2.4241e-05 | TDB |
| period | 1242.97704435215
3.40 | 4.3451e-06
1.19e-08 | d
yr |
| n | .2896272313602019 | 1.0125e-09 | deg/d |
| Q | 2.555220090557606 | 5.955e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.83 |
|
n/a |
E2021B10 |
|
| 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 |
|
[ show close-approach data ]
Alternate Designations
| 1986 TL1 = 1976 YJ1 = 1979 RN1 = 1984 AS |
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