# What speed variation would there be in a realistic LEO orbit at a nominal height of 200 km?

So in a previous question, How much variation in orbit altitude is caused by gravitational variation, in LEO? we established that an LEO orbit of ~200 km would actually change altitude by up to +/-20 km.

My question is, what speed variation would there be, if any, over the course of such an orbit? Precision better than order of magnitude not required but appreciated.

• You think of a circular orbit or an elliptical one? But at a height of 200 km the orbit would decay within a few weeks. – Uwe Apr 27 '20 at 20:07
• Circular orbit. Orbital decay isn't an issue; I'm trying to understand the impact on speed and it's interaction with height. At a higher orbit, decay would take longer, I accept,. – user2702772 Apr 27 '20 at 20:14