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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 22 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .131490188969878 | 3.5194e-08 | |
| a | 2.408559104712715 | 1.0974e-08 | au |
| q | 2.09185721288892 | 8.9774e-08 | au |
| i | 2.604358836126433 | 3.2586e-06 | deg |
| node | 283.4852803586979 | 0.00010568 | deg |
| peri | 358.2261646364776 | 0.00010755 | deg |
| M | 8.465527687237064 | 1.9037e-05 | deg |
| tp | 2459168.394020597026
(2020-Nov-14.89402060) | 7.2236e-05 | TDB |
| period | 1365.319801918102
3.74 | 9.3313e-06
2.555e-08 | d
yr |
| n | .2636744881999408 | 1.8021e-09 | deg/d |
| Q | 2.725260996536509 | 1.2417e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
16.12 |
|
n/a |
E2021B55 |
|
|
| 100936 Mekong | Discovered 1998 June 26 by E. W. Elst at the European Southern Observatory. |
| The Mekong is a 4350-kilometre river flowing through China, Myanmar, Laos, Thailand, Cambodia and Vietnam. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: MPC batch dated 2017-03-12 | Last Updated: 2017-03-14 |
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