SOLAR SYSTEM

Detailed explanation-1: -Line of Apsides: Line joining perigee and apogee through centre of the Earth. It is the major axis of the orbit. One-half of this line‟s length is the semi-major axis equivalents to satellite’s mean distance from the Earth. Inclination: The angle between the orbital plane and the Earth’s equatorial plane.

Detailed explanation-2: -The Earth’s two apsides are the farthest point, aphelion, and the nearest point, perihelion, of its orbit around the host Sun. The terms aphelion and perihelion apply in the same way to the orbits of Jupiter and the other planets, the comets, and the asteroids of the Solar System.

Detailed explanation-3: -definition. The line of apsides, connecting the two points, is the major axis of the orbit. The point nearest the focus is the pericentre, or periapsis, and that farthest from it is the apocentre, or apoapsis.

Detailed explanation-4: -The semi-major axis has length 2a. We define the closest point on the ellipse to F1 as the perigee (this point lies along the semi-major axis). This distance is called the perigee distance. We define the apogee as the opposite point along the semi-major axis.

Detailed explanation-5: -The point where the satellite most closely approaches the Earth is termed the perigee, or more generally the perifocus. The point where the satellite is farthest from the Earth is called the apogee or apofocus.