
Orbit determination is a set of techniques for estimating the orbits of objects such as moons, planets, and spacecraft. Determining the orbits of newly observed asteroids is a common usage of these techniques, both so the asteroid can be followed up with future observations, and also to verify that it has not been previously discovered. Observatio...
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http://en.wikipedia.org/wiki/Orbit_determination

(DOD) The process of describing the past, present, or predicted position of a satellite in terms of orbital parameters.
Found on
https://www.encyclo.co.uk/local/21254
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