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Aphelion is the greatest distance between a planet and the Sun in an elliptical orbit. Learn about the meaning, origin and examples of aphelion in astronomy.
aphelion, in astronomy, the point in the orbit of a planet, comet, or other body most distant from the Sun. When Earth is at its aphelion in early July, it is about 4,800,000 km (3,000,000 miles) farther from the Sun than when at its perihelion in early January.
Learn the definitions and differences of Aphelion, Perihelion, Apogee and Perigee, the terms for the furthest and closest points in orbits around the Sun or Earth. Find out how speed varies in these orbits and how to apply them to GCSE Astronomy Edexcel exam.
Definition. Aphelion is the point in the orbit of a planet, asteroid, or comet where it is farthest from the Sun. It is one of two extreme points in an elliptical orbit, the other being perihelion.
Definition. Aphelion refers to the point in the orbit of an object, such as a planet or comet, where it is farthest from the Sun. This position is significant because it plays a role in understanding the elliptical nature of orbits, as described by Kepler's laws of planetary motion.
Description: Aphelion is the point along an orbit around the Sun where the orbiting body is farthest from the Sun. Objects orbiting the Sun and not affected by any other object have orbits with an elliptical shape with the Sun at one of the foci of this ellipse. Mathematically, aphelion marks one end of the major axis of the ellipse.
Definition. Aphelion is the point in an object's orbit around the Sun where it is farthest from the Sun. This term is significant because it plays a crucial role in understanding the elliptical orbits of planets, as described by Kepler's laws of planetary motion.
