Polar orbit

Polar Orbit

A Polar Orbit (pronunciation: /ˈpoʊ.lər ˈɔr.bɪt/) is a type of orbit that passes above or nearly above both poles of the planet on each revolution. It therefore has an inclination of (or very close to) 90 degrees to the equator.

Etymology

The term "Polar Orbit" is derived from the Latin word 'polaris' meaning 'of or relating to the North or South Pole' and the Latin word 'orbita' meaning 'course, track'.

Related Terms

• Inclination: The angle between the orbital plane of a satellite and the equatorial plane of its parent body.
• Orbit: The gravitationally curved trajectory of an object.
• Satellite: An artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
• Equator: An imaginary line drawn around a planet, halfway between the poles, dividing it into northern and southern hemispheres.
• Revolution: The movement of an object in a circular or elliptical course around another or about an axis or center.

External links

• Medical encyclopedia article on Polar orbit
• Wikipedia's article - Polar orbit

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