No, there is not just one satellite on the moon. There are no satellites currently orbiting the Moon.

However, there have been several artificial satellites that have orbited the Moon in the past, including:

* Lunar Reconnaissance Orbiter (LRO)

* Apollo Lunar Module (LM)

* Clementine

* Lunar Prospector

* Chandrayaan-1

* Chang'e 1

These missions have gathered valuable data about the Moon's surface, composition, and environment.

While there are no current operational satellites orbiting the Moon, several countries have plans to send more missions in the future.