Law of Harmonies :
The ratio of the square of the orbital period of any two planets is equal to the ratio of the cube of their average distance from the sun
Law of equal Areas:
The imaginary line from center of the sun to the center of the planet sweeps out equal areas in equal interval of time.
Law of Ellipses:
The Path of all the planets in our solar system about the sun are elliptical in shape with center of sun being located at the focus.
Johannes kepler, A mathematician and astronomer ,used the observations to formulate the following three basic laws of planetary motion
1.Law of Ellipses
2.Law of equal Areas
3.Law of Harmonies
Law of Ellipses:
The Path of all the planets in our solar system about the sun are elliptical in shape with center of sun being located at the focus.
Law of equal Areas:
The imaginary line from center of the sun to the center of the planet sweeps out equal areas in equal interval of time.
Law of Harmonies :
The ratio of the square of the orbital period of any two planets is equal to the ratio of the cube of their average distance from the sun
The Inclination of an orbit is the orbital plane and the equatorial plane of the planet about which the body is orbiting.An orbit at an inclination of X degrees , An inclination of Zero denotes that the orbit is in the equatorial plane ,i.e the orbital plane and the equatorial plane coincide.An inclination of 90 degrees represents the orbit from pole to pole and is known as polar orbit.
Polar orbits are useful for the spacecrafts that carry out mapping or surveillance of the planets, This is because as the planet rotates ,the spacecraft has access to every point on the surface of the planet .In the case of polar orbit about the earth,when the orbital plane's path is as similar as earth's path in the solar orbit ,The Sun would maintain same inclination.
An Inclination of 180 degrees represents the orbiting body to move in the equatorial plane but in a direction opposite to the direction of rotation of the planet in the equatorial plane.It is known as Retro-Grade equatorial orbit.
