Answer: perihelion

AnswerCrossword Clue
PERIHELIONOrbital position nearest the sun
PERIHELIONOrbit point closest to the sun
perihelionthe point of the orbit of a planet or a comet at which it is nearest to the sun, as opposed to aphelion
perihelionThe point in the orbit of a planet, asteroid, or comet at which it is closest to the sun