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 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:

Referenced by pages:
astronomical quantities
CMB anisotropies
Keplerian orbit
Kepler radius
Kepler's laws
Lagrangian point
minimum mass (m sin i)
Poynting-Robertson effect
projected semi-major axis
rotation curve
stellar parameter determination
tidal migration
wide binaries (WB)