The perihelion is the point in the orbit of a celestial body where it is nearest to its orbital focus, generally a star. It is the opposite of aphelion, which is the point in the orbit where the celestial body is farthest from its focus. The word "perihelion" stems from the Ancient Greek words "peri", meaning ...
The aphelion is the point in the orbit of an object where it is farthest from the Sun. ... The word aphelion derives from the Greek words, apo meaning away, off, ...
Aphelion definition, Astronomy. the point in the orbit of a planet or a comet at which it is farthest from the sun. See more.
Sep 21, 2014 ... Define aphelion: the point farthest from the sun in the path of an orbiting celestial body (such as a planet) compare perihelion.
the point in the orbit of a planet, asteroid, or comet at... Meaning, pronunciation, example sentences, and more from Oxford Dictionaries.
apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun.
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Aphelion definition: the point in its orbit when a planet or comet is at its greatest distance from the sun | Meaning, pronunciation, translations and examples.
All planets, comets and asteroids in our solar system have elliptical (non-circular) orbits. So, they have a closest (perihelion) and a farthest (aphelion) point from ...