Orbital Geschwindigkeits Rechner — Formel
## How Orbital Velocity Is Found
For a circular orbit the gravitational pull provides exactly the centripetal force needed.
### Formula
**v = √(G M / r)**
- *G* = 6.674e-11 N m² kg⁻²
- *M* = central body mass
- *r* = orbital radius (centre-to-centre)
Higher orbits are slower; lower orbits are faster.
For a circular orbit the gravitational pull provides exactly the centripetal force needed.
### Formula
**v = √(G M / r)**
- *G* = 6.674e-11 N m² kg⁻²
- *M* = central body mass
- *r* = orbital radius (centre-to-centre)
Higher orbits are slower; lower orbits are faster.
Lösungsbeispiel
Find the speed of the ISS at about 400 km altitude (r = 6 771 km).
- v = √(G M / r)
- G M = 6.674e-11 × 5.972e24 = 3.986e14
- v = √(3.986e14 / 6.771e6) = √(5.887e7)
- v ≈ 7 673 m/s ≈ 7.67 km/s