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

(*orbits,celestial mechanics,measure*)
**Further reading:**

http://en.wikipedia.org/wiki/Orbital_speed

**Referenced by pages:**

astronomical quantities

CMB anisotropies

Earth

epicycle

Keplerian orbit

Kepler radius

Kepler's laws

Lagrangian point

minimum mass (m sin i)

moon

Poynting-Robertson effect

projected semi-major axis

rotation curve

stellar parameter determination

tidal migration

wide binaries (WB)

Index