Actually planet doesn’t have any hard set definition, we kind of just do it case by case because its damn near impossible to come up with a rigid definition that doesn’t suddenly classify some planets as moons or some moons as planets or create weird situations in which an object can switch between the two.
Actually planet doesn’t have any hard set definition, we kind of just do it case by case because its damn near impossible to come up with a rigid definition that doesn’t suddenly classify some planets as moons or some moons as planets or create weird situations in which an object can switch between the two.
https://en.wikipedia.org/wiki/IAU_definition_of_planet