aphelian
/əˈfiːliən/
adjective
- Relating to or occurring at the aphelion, the point in an orbit farthest from the sun.
- During the aphelian season, the Earth receives slightly less solar radiation.
- The aphelian position of the comet made it appear dimmer in the night sky.
- Scientists studied the aphelian temperatures of the planet to understand its climate cycles.
Antonyms