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.