The (*) third of them relates the square of the period to the cube of the semi-major axis, while the first of them states that orbits are ellipses with the sun at one focus.
One parameter for bodies whose motion is characterized by these statements is the mean anomaly, which is one of the three angular parameters along with the true anomaly and the eccentric anomaly. The second of these statements states that areal velocity is constant. The (*) third of them relates the square of the period to the cube of the semi-major axis, while the first of them states that orbits are ellipses with the sun at one focus. For 10 points, name these three laws of planetary motion, named for a German astronomer.
One parameter for bodies whose motion is characterized by these statements is the mean anomaly, which is one of the three angular parameters along with the true anomaly and the eccentric anomaly.
{Kepler's} Laws of Planetary Motion