Orbital Velocity Calculator

Calculate orbital velocity, period, and altitude for satellites and celestial bodies using Kepler's laws.

Central Body *

Altitude *

Above surface (0 for surface orbit)

Custom Mass (for custom body)

Custom Radius (for custom body)

Calculation Mode

Output Unit

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Orbital Parameters

Velocity

—

Period

—

Orbit Radius

—

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Orbital Calculations

Complete orbital parameter analysis

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Orbital Velocity

—

v = √(GM/r)

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Orbital Period

—

T = 2π√(r³/GM)

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Orbit Radius

—

r = R + h

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Central Body

—

Mass: — kg

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Orbital Comparison

Compare with known orbital velocities

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Orbital Mechanics Concepts

Understanding orbits and gravity

🌌 Scientific Disclaimer: This orbital velocity calculator uses the standard two-body Keplerian orbit model. Results assume circular orbits and point masses. Real-world orbits are affected by atmospheric drag, gravitational perturbations, and relativistic effects. For precise mission planning, consult professional aerospace tools.