Which planet has maximum of satellites?

The planet which has no satellite is

Observe the following diagram and answer the questions: Derive the formula for that velocity of satellite assuming the mass of the planet M and mass of satellite as m .

A small satellite revolves around a heavy planet in a circular orbit. At a point in its orbit an impulse acts suddenly and instantaneously increases its kinetic energy K times without change in its direction of motion. The ratio of maximum to the minimum distance from the planet is [Assume mass of satellite is negligible small compared to that of planet]

What is the mass of the planet that has a satellite whose time period is T and orbital radius is r ?