Orbital Velocity Calculator

Space Orbital Mechanics

Calculate orbital velocity, period, and escape velocity for satellites and spacecraft around any celestial body.

Calculator

Celestial Body

Orbital Altitude

Formulas:

v = √(GM/r)

T = 2π√(r³/GM)

G = 6.674×10⁻¹¹ m³/kg/s²

Quick Examples

About Orbital Velocity

Orbital velocity is the speed needed to maintain a stable orbit around a celestial body.

Key Concepts:

Lower orbits = faster velocity
Escape velocity = √2 × orbital velocity
Geostationary orbit: 24h period

Features

Multiple celestial bodies
Custom body support
Orbital velocity
Orbital period
Escape velocity
Multiple units
Visual orbit diagram
Copy results

Common Orbits

ISS (408 km):

7.66 km/s, 92.7 min period

GPS (20,200 km):

3.87 km/s, 11.97 h period

GEO (35,786 km):

3.07 km/s, 24 h period

Moon (384,400 km):

1.02 km/s, 27.3 days

Applications

Satellites: Communication, GPS, weather

Space Stations: ISS, Tiangong

Missions: Launch planning

Astronomy: Planetary orbits

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