Orbital Period of a Comet

Orbital Period of a Comet

Given the minimum and maximum distance of the orbit of a comet in an elliptical orbit, you can use Kepler’s Third Law and the definition of the semi-major axis of an ellipse to calculate its orbital period

P is the orbital period of the comet,

 is the mathematical constant pi,

a is the semi-major axis of the comet’s orbit,

G is the gravitational constant,

M is the mass of the Sun, and

m is the mass of the comet.