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high Earth orbit


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(HEO)

A spacecraft orbit that is above an altitude of approximately 32 180 km. This is called a ‘supersynchronous’ orbit, above the geosynchronous orbit and the medium Earth orbit. Such an orbit provides a large observing area, as well as long, uninterrupted viewing intervals. It is often highly inclined and highly elliptical to avoid the Earth's magnetosphere. The Chandra X-Ray Observatory is in HEO.

Subjects: Astronomy and Astrophysics.


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