perihelion
/ˌpɛrɪˈhiliən/
noun
- The point in the orbit of a planet, comet, or other object around the sun where it is closest to the sun.
- Comet Halley's perihelion occurs every 75 to 76 years, bringing it close enough to be visible from Earth.
- The satellite's instruments were designed to withstand the intense heat at perihelion.
- Earth reaches its perihelion in early January, when it is about 91.4 million miles from the sun.
Antonyms