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
the point farthest from the sun in the path of an orbiting celestial body (such as a
planet) — compare perihelion. See
the point in the orbit of a planet, asteroid, or comet at...
apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun.
The closest point to the Sun in a planet's orbit is called perihelion. The furthest
point is called
a·phe·li·on n. pl. a·phe·li·a (-lē-ə). The point on the orbit of a celestial body that is farthest from the sun. [From New Latin aphēlium : Greek apo-, apo- + Greek ...
The Earth is closest to the Sun – at its Perihelion – about 2 weeks after the
December Solstice and farthest from the Sun – at its