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AMSAT - What Are Keplerian Elements? (1247 words) |
 | The orbit ellipse lies in a plane known as the orbital plane. |
| The orbital plane always goes thru the center of the earth, but may be tilted any angle relative to the equator. |
| Inclination is the angle between the orbital plane and the equatorial plane. |
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NationMaster - Encyclopedia: Orbital plane (astronomy) (308 words) |
| The orbital plane of an object orbiting another is the geometrical plane in which the orbit is embedded. |
| Three points are required to find the orbital plane: the center of the heavier object, the center of the orbiting object and the center of the orbiting object at some later time. |
| Inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit and is the angular distance of the orbital plane from the plane of the reference (usually planets equator or the ecliptic), stated in degrees. |
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