WBeta angle
WFree-return trajectory
WGeostationary orbit
WGeostationary transfer orbit
WGeosynchronous orbit
WGraveyard orbit
WHigh Earth orbit
WHighly elliptical orbit
WMedium Earth orbit
WLow Earth orbit
WMedium Earth orbit
WMolniya orbit
WPolar orbit
WSun-synchronous orbit
WGraveyard orbit
WTundra orbit