An object that revolves around a planet is called:

An object that revolves around a planet is fundamentally known as a Satellite. This term applies to both natural celestial bodies, like Earth's Moon, and artificial objects launched into orbit by humans, such as communication satellites. Satellites are held in orbit by the planet's gravitational pull, continuously falling around it. Therefore, 'Satellite' is the correct answer.

• Jet refers to an aircraft propelled by jet engines or the engine type itself.
• Aeroplane is a general term for a powered flying vehicle with fixed wings.
• Rocket is a vehicle or missile that obtains thrust by the ejection of fast-moving fluid from a nozzle, primarily used for launching objects into space, not an object that revolves around a planet itself in the context of the question.