## circular velocityThe horizontal velocity of an object required to keep it in a circular orbit at a given altitude about a planet or other gravitating mass. It is given by √[ G(M + m)/R], where G
is the gravitational constant,
M is the mass of the central body, m is the mass of the orbiting
body (which can be ignored, for example, in the case of an orbiting spacecraft),
and R is the distance separating the orbiter from the center of the
gravitating body. ## Related entry• orbital velocity## Related categories• CELESTIAL MECHANICS• CLASSICAL MECHANICS | |||||

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