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apoapsis
apoapsis
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Số nhiều: apoapses
This term is a technical generalization used in orbital mechanics to describe the furthest point of any elliptical orbit. It serves as an umbrella term for more specific astronomical points, such as the apogee (relative to Earth) or the aphelion (relative to the Sun).
Because it describes a specific geometric point in a trajectory, it is used almost exclusively in scientific, aerospace, and astronomical contexts. It carries a neutral, descriptive tone and is rarely encountered in general conversation outside of technical discussions regarding satellite trajectories or planetary motion.
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periapsisapogeeaphelionorbitellipseeccentricitytrajectorygravitysatelliteplanetmoonstarsunastronomyastrophysicscelestialmechanicsvelocityaccelerationdistancealtituderadiusfocusperigeeperihelionnewtoninertiamomentumcentrifugalcentripetalvacuumspacecosmosvoidspherespheroidhyperbolaparabolacirclearcnodeinclinationprecessionperturbationescape velocitymassattractiontideeclipsetransitoccultationzenithnadirazimuthhorizoncoordinatevectorscalarenergypotentialkinetic