Orbital Velocity Calculator

Calculate orbital velocity, period, and escape velocity for celestial bodies
Mass of the central body (e.g., planet, star)
Distance from center of central body
Orbital Velocity
m/s
km/h
Orbital Period
days
hours
Escape Velocity
m/s
km/h
Calculation Details

Orbital Velocity Formula:

v = √(GM/r)

Where:

  • G = 6.674×10⁻¹¹ m³/(kg·s²) (Gravitational constant)
  • M = Central body mass
  • r = Orbital radius

Orbital Period Formula:

T = 2π√(r³/GM)

Escape Velocity Formula:

v_escape = √(2GM/r)

Features

  • Calculate orbital velocity for any celestial body
  • Determine orbital period in days and hours
  • Calculate escape velocity from the orbit
  • Preset configurations for common orbits (ISS, Moon, Earth, Mars)
  • Results displayed in multiple units (m/s and km/h)
  • Shows formulas and calculation details

How to Use

  1. Enter the central body mass in kilograms (e.g., Earth's mass: 5.972×10²⁴ kg)
  2. Enter the orbital radius in meters from the center of the central body
  3. Or select a preset for common orbits
  4. View the calculated orbital velocity, period, and escape velocity