aphelion
definition
the point in the orbit of an object where it is farthest from the sun
example
During the summer months, Earth reaches its aphelion, the point where it is farthest from the Sun.
synonyms
apogeefurthest pointmaximum distance
word origin — from the Greek 'aphelios', meaning 'away from the sun' (from 'apo-' meaning 'away from' and 'helios' meaning 'sun')