Calculateur de Vitesse de Satellite — Formule
## Satellite Speed From Altitude
**v = √(GM / r)** where r = R_Earth + altitude
Using GM_Earth = 3.986e14 m³/s² and R_Earth = 6371 km.
The period follows: **T = 2πr / v**
**v = √(GM / r)** where r = R_Earth + altitude
Using GM_Earth = 3.986e14 m³/s² and R_Earth = 6371 km.
The period follows: **T = 2πr / v**
Exemple Résolu
Find the speed of the ISS at 400 km altitude.
- r = 6371 + 400 = 6771 km = 6 771 000 m
- v = √(3.986e14 / 6 771 000) ≈ 7 673 m/s
- Period = 2π × 6 771 000 / 7 673 ≈ 5 542 s ≈ 92.4 min