Earth Orbits
| orbit | center-to-center distance |
altitude above the Earth's surface |
speed | Orbital period | specific orbital energy |
|---|---|---|---|---|---|
| Earth's surface (for comparison) | 6,400 km | 0 km | 7.89 km/s (17,650 mph) | — | -62.6 MJ/kg |
| Low Earth orbit | 6,600 to 8,400 km | 200 to 2,000 km | circular orbit: 7.8 to 6.9 km/s (17,450 mph to 15,430 mph) respectively elliptic orbit: 8.2 to 6.5 km/s respectively |
89 to 128 min | -17.0 MJ/kg |
| Molniya orbit | 6,900 to 46,300 km | 500 to 39,900 km | 10.0 to 1.5 km/s (22,370 mph to 3,335 mph) respectively | 11 h 58 min | -4.7 MJ/kg |
| GEO | 42,000 km | 35,786 km | 3.1 km/s (6,935 mph) | 23 h 56 min | -4.6 MJ/kg |
| Orbit of the Moon | 363,000 to 406,000 km | 357,000 to 399,000 km | 1.08 to 0.97 km/s (2,416 to 2,170 mph) respectively | 27.3 days | -0.5 MJ/kg |
Read more about this topic: Orbital Speed
Famous quotes containing the words earth and/or orbits:
“Let Rome in Tiber melt and the wide arch
Of the ranged empire fall! Here is my space.
Kingdoms are clay; our dungy earth alike
Feeds beast as man. The nobleness of life
Is to do thus; when such a mutual pair
And such a twain can do ‘t, in which I bind,
On pain of punishment, the world to weet
We stand up peerless.”
—William Shakespeare (1564–1616)
“To me, however, the question of the times resolved itself into a practical question of the conduct of life. How shall I live? We are incompetent to solve the times. Our geometry cannot span the huge orbits of the prevailing ideas, behold their return, and reconcile their opposition. We can only obey our own polarity.”
—Ralph Waldo Emerson (1803–1882)