Orbital period of planet (Kepler's Third Law)

Formula

Orbital period of planet (Kepler's Third Law) formula
P
the orbital period of planet
a
the semimajor axis of the orbit
M
the mass of the primary body

Formula description

The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit. The third law captures the relationship between the distance of planets from the Sun, and their orbital periods. G = 6.673848E-11 N.m2/kg2.

Calculator (how to use calculator?)

Orbital period of planet (Kepler's Third Law) formula
a
M
P
Precision

Formula code

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References

  1. wikipedia: Kepler's Third Law.

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