apoapsis
pl: apoapses
Related Words
periapsisapogeeaphelionorbitellipseeccentricitytrajectorygravitysatelliteplanetmoonstarsunastronomyastrophysicscelestialmechanicsvelocityaccelerationdistancealtituderadiusfocusperigeeperihelionnewtoninertiamomentumcentrifugalcentripetalvacuumspacecosmosvoidspherespheroidhyperbolaparabolacirclearcnodeinclinationprecessionperturbationescape velocitymassattractiontideeclipsetransitoccultationzenithnadirazimuthhorizoncoordinatevectorscalarenergypotentialkinetic