卫星速度计算器
使用此卫星速度计算器快速获得准确的计算结果。
km
Orbital Speed
7,672.59 m/s
Speed (km/s)7.6726 km/s
轨道周期92.41 min
Orbital Speed vs Altitude Above Surface
公式
## 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**
计算示例
Find the speed of the ISS at 400 km altitude.
- 01r = 6371 + 400 = 6771 km = 6 771 000 m
- 02v = √(3.986e14 / 6 771 000) ≈ 7 673 m/s
- 03Period = 2π × 6 771 000 / 7 673 ≈ 5 542 s ≈ 92.4 min
常见问题
What altitude is the ISS?
About 400-420 km, orbiting every 92 minutes at about 7.67 km/s.
How fast is a GPS satellite?
GPS orbits at 20 200 km altitude at about 3.87 km/s with a 12-hour period.
Does satellite mass affect speed?
No. Orbital speed is independent of the satellite's mass.