perihelion

English Thesaurus

1. periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun (noun.location)

hypernym	:	periapsis, point of periapsis,
definition	:	(astronomy) the point in an orbit closest to the body being orbited (noun.location)

antonym	:	aphelion,
definition	:	apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun (noun.location)

antonym	:	aphelion,
definition	:	apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun (noun.location)