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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .02498322381412064 | 4.3055e-08 | |
| a | 2.903953609622322 | 1.5504e-08 | au |
| q | 2.831403486647304 | 1.2594e-07 | au |
| i | 1.001472708950727 | 4.125e-06 | deg |
| node | 277.885046270402 | 0.00026838 | deg |
| peri | 200.2113554581727 | 0.00028258 | deg |
| M | 194.4790666333506 | 8.9367e-05 | deg |
| tp | 2459431.561883910007
(2021-Aug-05.06188391) | 0.00045106 | TDB |
| period | 1807.519279418735
4.95 | 1.4475e-05
3.963e-08 | d
yr |
| n | .1991680000867097 | 1.595e-09 | deg/d |
| Q | 2.97650373259734 | 1.5891e-08 | au |
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| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.4 |
|
n/a |
MPO309247 |
|
|
| 12131 Echternach | Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld at Leiden on Palomar Schmidt plates taken by T. Gehrels. |
| As assistant editor of the Dutch astronomical magazine Zenit, Dutch science writer Eddy Echternach (b. 1961) has been popularizing astronomy since the late 1980s. He is co-author of numerous books on astronomy and astronomical exercises for use in primary and high schools. The name was suggested by C. E. Koppeschaar. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20070926/MPCPages.arc | Last Updated: 2007-09-30 |
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