The International Space Station (ISS) orbits Earth at an average altitude of 400 kilometers (250 miles). To maintain this orbit, it needs to have a specific angular velocity.

Here's the breakdown:

* Orbital Period: The ISS takes approximately 90 minutes to complete one orbit around Earth.

* Angular Velocity: Angular velocity is measured in radians per second. To calculate it, we use the formula:

Angular velocity (ω) = 2π / Time period (T)

Therefore, the ISS's angular velocity is approximately:

ω = 2π / (90 minutes * 60 seconds/minute) ≈ 0.00116 radians/second

Important Notes:

* The ISS's angular velocity is not constant due to factors like atmospheric drag and gravitational variations.

* The provided value is an average, and actual angular velocity can fluctuate slightly.

* The ISS constantly makes small adjustments to its orbit to compensate for these variations.

Let me know if you have any other questions about the ISS or its orbital characteristics!