That point in the orbit of any object which is at the smallest distance from the center of the central body. For example, the point in the moons orbit which is the smallest distance from the center of the earth
The point at which an object in earth orbit passes closest to the earth's surface
The point where (and when) an object's orbit about the earth in which it is closest to the earth; only applicable to objects orbiting the earth (not to objects orbiting the sun --- a common error)
periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth
The point in the Moon's orbit which is closest to the Earth See also: apogee, aphelion, perihelion
The point nearest the earth on the moon's orbit This term can be applied to any other body orbiting the earth, such as satellites It is the opposite of apogee