Hi,

Question is: compute the radius of a geostationary satellite's orbit in units of the Earth's radius.

My answer is:

Earth's radius R = 6378.1 km approx

Satellite is 35,786km above ground so radius of the orbit in terms of earth's radius is (35,786/6378.1)R + 1R = 6.61 R

Have I missed anything here or is it just that simple?

Thanks for any advice.