ढाँचा:Comparison satellite navigation orbits
- ↑ Orbital periods and speeds are calculated using the relations 4π²R³ = T²GM and V²R = GM, where R = radius of orbit in metres, T = orbital period in seconds, V = orbital speed in m/s, G = gravitational constant ≈ 6.673×१०−११ Nm²/kg², M = mass of Earth ≈ 5.98×१०२४ kg.