Definition, Meaning & Synonyms
perihelion
noun
/ˌpɛrɪˈhiːliən/
Definition
The point in the orbit of a celestial body where it is closest to the Sun.
Examples
- The Earth reached its perihelion on January 3rd, when it was about 91.4 million miles from the Sun.
- Comets often have highly elliptical orbits, causing their perihelion to vary greatly.
- During perihelion, solar radiation is slightly stronger due to the reduced distance from the Sun.
Meaning
In astronomy, perihelion refers to the position in the orbit of a planet or other celestial body where it is nearest to the Sun, resulting in the shortest distance from the solar center.
Synonyms
- None (specific term)
