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Orbital parameters - definition of Orbital parameters in Encyclopedia (349 words) |
 | The elements of an orbit are the parameters needed to specify that orbit uniquely, given a model of two ideal masses obeying the Newtonian laws of motion and the inverse-square law of gravitational attraction. |
| The traditionally used set of orbital elements is called the set of Keplerian elements, after Johannes Kepler and his Kepler's laws. |
| Other orbital parameters, such as the semi-major axis, can then be calculated from the Keplerian elements. |
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