SOLAR SYSTEM

Detailed explanation-1: -The point of the orbit which is closest to the Earth, when the Moon passes through that point, then it is known as perigee. Perigee occurs about 3 or 4 times in a year, when a new or full moon coincides with the moon’s closest point to Earth, this phenomenon is known as the perigee.

Detailed explanation-2: -The orbital paths of the moon around the earth and the earth around the sun are both elliptical. The point in the moon’s orbit where it is farthest from the earth is called apogee, while it’s closest approach is known as perigee.

Detailed explanation-3: -The Moon revolves around Earth in an elliptical orbit with a mean eccentricity of 0.0549. As a result, the Moon’s distance from Earth (center-to-center) varies with mean values of 363, 396 km at perigee (closest) to 405, 504 km at apogee (most distant).

Detailed explanation-4: -The point of maximum separation from the Earth is known as the apogee (from the Greek apo = away from). At this point in the orbit, the object is moving at its slowest speed (Kepler’s Second Law). The apogee refers specifically to orbits around the Earth, and is equivalent to the apoapsis of a general orbit.