ELI5: Explain Like I'm 5

Minor-planet moon

A minor-planet moon is when a small planet (called a minor planet) has its own tiny moon orbiting around it. Just like big planets have moons (like the Moon around Earth), some of the smaller planets in our Solar System have their own moons too. It's kind of like when you share your ice cream with a friend - the small planet is like the ice cream and the moon is like the friend. The moon orbits around the planet like your friend would eat the ice cream around you.