Cosgroveball is a moon of Uranusball. Mirandaball is the smallest, closest and ugliest round moon of Uranus. While astronomers from Earthball aren't sure how its rugged terrein formed, the most likely hypothesis is that it collided with another moon, bursting its apart, then it reformed. She contains the deepest ridge in the Solar System, at about 5km to 10km and if a ball was dropped from the top, it would take 10 minutes to get to the bottom. Like the other moons of Uranusball, It is possible that it has a subsurface ocean (as a result of tidal forces) where aquatic 6balls roam.
Orbit - Rotation
A real life photo of Miranda for reference
How Miranda was