gravitationally bound systems, the orbital speed of an astronomical body or object is the speed at which it orbits around either the barycenter or, if the object is much less massive than the largest body in the system, its speed relative to that largest body.

gravitationally bound systems, the orbital speed of an astronomical body or object is the speed at which it orbits around either the barycenter or, if the object is much less massive than the largest body in the system, its speed relative to that largest body.

orbital velocity. noun. Thevelocityat which a body revolves about another body. The minimumvelocityrequired to place or maintain a satellite in a givenorbit.

Orbital velocity is defined as the velocity at which a body (satellite) revolves around the other body (earth).

The other ways to express orbital velocity are as follows:

The particle velocity due to wave motionProduction of orbital kinetic energy by the electron

Derivation of orbital velocity

Orbital velocity is derived in the following way:

Fg=GMm/r^2(gravitational force between the earth and the satellite) (eq.1)

Fc=mV^2/r(centripetal force acting upon the satellite) (eq.2)

Where,

M: mass of the earth

m: mass of the satellite

r: radius of uniform motion of the satellite around the earth

r=R+h

Where,

R: radius of the earth

h: height of the satellite

V: linear velocity of the satellite

Fc: centripetal force

Fg: gravitational force

Fg=Fc(from eq.1 and eq.2)

GMm/r^2=mV^2/r

V=[GM/r]^1/2(eq.3)

Therefore, this is the equation of orbital velocity.

orbital velocity. noun. Thevelocityat which a body revolves about another body. The minimumvelocityrequired to place or maintain a satellite in a givenorbit.