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None. The closest case that we have in our solar system that of Charon, Pluto's largest moon, which about roughly half the diameter of Pluto. Since Pluto is no longer considered a planet the largest moon-planet size ratio is that of our own moon, which is about one quarter the diameter of Earth.
What else can I help you with?
Why is a moon not a planet?
A planet orbits a star such as the sun. A moon orbits a planet.
Is a planet a moon?
No. A moon orbits around a planet. A planet orbits around the sun.
How is planet different from moon?
A planet orbits a star whereas a moon orbits a planet.
The moon orbits what planet?
The moon with the specific name 'The Moon' orbits planet Earth.
Are there any other moon's on Mars?
Mars is a planet. A moon is a large celestial object that orbits a planet. So no, there are no moons on mars.
Does the moon orbit around a planet?
No, it orbits you. Of course! The moon orbits EARTH, our planet.
How can you tell something is a planet and not a moon?
A planet is in direct orbit around a central star, while a moon is in orbit around a large body (a planet) rather than in a direct orbit around a star. The moon orbits the planet, while the planet orbits the sun.
How is a moon different from a dwarf planet?
Generally, a dwarf planet orbits only the sun, whereas a moon orbits a planet, which in turn orbits a sun.
What does it mean when your teacher asks what is a satellite on a planet?
any large object that orbits around the planet or AKA moon
What is something in the solar system that orbits a planet?
A moon orbits a planet.
What planet is closer to the moon?
Earth is the closest planet the moon, as it is our planet's moon and orbits Earth.
What is the definition of a Moon?
A moon orbits a planet.
