Total energy of a satellite revolving in circular orbit around a planet.
For a satellite orbiting around a planet, the tangential/orbital velocity will be.
[as gravitational force on a satellite equals the centripetal force]
where R is radius of the planet and h is the height from the surface of the planet.
So, kinetic energy of the satellite
m is the mass of the satellite
The gravitational P. E at infinity is considered to be zero, so the P. E at distance (R + h) from the centre of the planet will be :