🛰️ Orbital Velocity Calculator

Calculate the speed needed to stay in orbit.

Select Orbiting Body

Mass of Planet (kg)

Orbit Radius (m)

meters

Distance from CENTER of planet (not surface).

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How Satellites Stay Up

Orbital velocity is the speed needed to balance gravitational pull with the centrifugal force of motion.
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v = √(GM / r)

Where G is the gravitational constant, M is the mass of the planet, and r is the distance from the center.