Orbital Period

T = 2\pi\sqrt{\frac{r^3}{GM}}

Kepler's third law for circular orbits.

Variables

Orbital period

Time for one orbit

Orbital radius

Semi-major axis

Gravitational constant

6.674×10⁻¹¹

N·m²/kg²

Central mass

Mass being orbited

T = 2πr/v with v = √(GM/r).

0/5000