Orbit Speed & Period Calculator
Estimate orbital speed and period around Earth based on orbital altitude. Uses a circular-orbit approximation (educational).
Result
Orbital speed
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Orbital period
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Orbital radius
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For geostationary orbit, the period should come out close to one day.
How we calculate
We use Earth’s gravitational parameter μ and Earth radius R. For a circular orbit at radius r = R + altitude: speed v = √(μ / r), period T = 2π √(r³ / μ).