course correction;  trajectory change;  orbital adjustment
 trackless;  reckless;  dissipated
 continuous track;  caterpillar track
 geostationary orbit;  geosynchronous orbit
 low orbit;  low earth orbit;  LEO
 handcar railroad;  handcar railway
 earth orbit;  geocentric orbit
 heliocentric orbit;  circumsolar orbit
 semi-major axis (esp. in orbital matters)
 ICO;  Intermediate Circular Orbit
 semi-minor axis (esp. in orbital matters)