The point in an orbit around Saturn that is farthest from the planet, analogous to aphelion for the sun.
From 'apo-' (farthest) + 'Saturn' + '-ium' (suffix indicating a state or condition). This technical term mirrors the structure of 'perisaturnium,' the closest point.
Astronomers love making parallel terms—if a satellite orbits Saturn and reaches its farthest point, that's the 'aposaturnium,' and the closest point is the 'perisaturnium'—it's the same pattern used for Earth (apogee/perigee) and every other planet.
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