The point in the orbit of a planet, comet, etc which is closest to the sun See also: Aphelion
The point of the earth's orbit that is nearest to the sun Although the position is part of a 21,000 year cycle, currently it occurs around January, when the earth is about 3 million miles closer to the sun than at aphelion This term can be applied to any other celestial body in orbit around the sun It is the opposite of aphelion
The point in the orbit of a planet or comet which is nearest the Sun (as opposed to the aphelion, which is the point in the orbit farthest from the Sun)
The point in a planet's orbit when it is closest to the Sun (Helios is Greek for Sun) See aphelion, perigee