any object man made or natural, big or small which rotates around a planet is called it's satellite
A planet's natural satellite. :-)
This is called "orbit".
planet ?
A moon or satellite.
It is considered a satellite.
Satellite. If it is big enough, we call it a "moon".
An eclipseAn occultation
The time it takes a planet or satellite to revolve once is called its day.
EclipseAn eclipse, possibly.
The Satellite Atlas orbits the planet Saturn.
Earth. Or in another word, a planet.
Oberon is a moon/satellite of the planet Uranus.