Equatorial orbit
Equatorial orbit was a orbit achieved above the equator of a planetary body that had an orbital inclination of 0°. Objects in equatorial orbit were not necessarily in geostationary orbit (one orbit per day), as depending on the altitude (ie low orbit or high orbit) such an object may complete several orbits in a single day or less than a single orbit in a day. 

In 2366, the  parked in high equatorial orbit over Rana IV to investigate the planet's missing colony. At that position, the ship's sensors could scan at ninety s of longitude. ()

External link 
 

Physics
Astronomy