Aphelion

This article is about astronomy. For image analysis software suite, see Aphelion (software). For other uses, see Aphelion (disambiguation).

1. Planet at aphelion 2. Planet at perihelion 3. Sun

The aphelion is the point in the orbit of an object where it is farthest from the Sun. The point in orbit where an object is nearest to the sun is called the perihelion. The word aphelion derives from the Greek words, apo meaning away, off, apart and Helios aphelion occurs when earth is farthest from the sun