Astrophysics (index)about

orbital speed

(speed of an orbiting body around the barycenter of a system)

Orbital speed is the speed of an orbiting body around the center of gravity of the system, i.e., around its barycenter. For a given pair, the further apart, the lower the orbital speed.

Earth's orbital speed as it orbits the Sun is about 30km/second, while Jupiter's is about 13km/second. The Moon's orbital speed around the Earth is about 1km/second. Artificial satellites around Earth vary from around 7km/second for a low orbit to 3km/second for a geostationary orbit.


(orbits,celestial mechanics,measure)
http://en.wikipedia.org/wiki/Orbital_speed

Referenced by:
astronomical quantities
Earth
epicycle
Kepler radius
Kepler's laws
moon
Poynting-Robertson effect
rotation curve

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