Redirected from Perihelion
Given two objects, A and B (two planets for example), if object B orbits around object A; periapsis is the point in the orbit of B which is closest to A.
According to Kepler's laws of planetary motion, as a planet travels in an elliptical orbit, around a star; as the planet approaches the periapsis; it will increase in velocity.
The point of farthest approach is the apoapsis.
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