Orbital Period Ellipse Formula

Equation for calculate orbital period ellipse is,

$$a=\mathrm{2\; ·\; \pi \; ·}\sqrt{\raisebox{1ex}{$\mathrm{a³}$}\!\left/ \!\raisebox{-1ex}{$\mu $}\right.}$$

T = orbital period of a body traveling along an elliptic orbit

π = pi (3.14159265358979323846)

a = semi-major axis

μ = standard gravitational parameter