Useful Data
| Earth gravitational parameter | 398600.5 km3/s2 |
| Earth mass | 5.9733*1024 kg |
| Earth gravitational constant | 6.673* 10–20 km3/s2 |
| Earth equatorial radius | 6378.14 km |
| Earth polar radius | 6356.785 km |
| Earth eccentricity | 0.08182 |
| Velocity of light | 299792.458 km/s (NBS 1972 value) |
| Average radius of geostationary orbit | 42164.57 km |
| Velocity of geostationary satellite | 3.074689 km/s |
| Angular velocity of geostationary satellites | 72.92115*10–6 rad/s |
| Geostationary satellite orbital period | 86164.09 s (23 hours, 56 minutes, 4.09 seconds) |
| Boltzmann constant | 1.3803*10–23 W/KHz or -228.6 db W/K |
| Maximum range of geostationary satellite (0 degree elevation) | 41680 km |
| Minimum range of geostationary satellite (90 degree elevation) | 35786 km |
| Half-angle subtended at the satellite by Earth | 8.69 degrees |
| Coverage limit on Earth (0 degree elevation) | 81.3 degrees |
| One nautical mile | 1.852 km |