2011-02-01

Apogee

Apogee is the opposite of perigee: it is the point in its orbit where a satellite is at the greatest distance from the Earth. Around any other body, apogee is generally known as apoapsis. For eccentric orbits, apogee occurs in the part of the sky where the satellite appears to 'hang' for the longest time - apogee dwell. This was put to good effect during the cold war by the USSR's Molniya satellites that spent a good many hours alternately 'over' North America and the Soviet Union.



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