course correction; trajectory change; orbital adjustment
trackless; reckless; dissipated
geostationary orbit; geosynchronous orbit
continuous track; caterpillar track
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)