Mimas
Saturn's 'Death Star' moon with a giant impact crater.
About
Mimas is the smallest astronomical body known to be rounded due to its own gravity. Its giant Herschel crater gives it a striking resemblance to the Death Star from Star Wars.
Properties
Notable Facts
Mimas has a giant crater called Herschel that makes it look like the Death Star
It is the smallest body in the solar system that is rounded by self-gravity
Evidence suggests Mimas may have a subsurface ocean
Other Moons of Saturn

Titan
Saturn's largest moon with a thick atmosphere and liquid methane lakes on its surface.
5,149.5 km
Diameter
15.9 d
Orbit
1655
Discovered

Enceladus
Saturn moon with water geysers erupting from a subsurface ocean.
504.2 km
Diameter
1.4 d
Orbit
1789
Discovered
Tethys
An icy Saturn moon with a massive impact crater and vast canyon system.
1,062 km
Diameter
1.9 d
Orbit
1684
Discovered
Dione
A Saturn moon with bright ice cliffs and possible subsurface ocean.
1,122.8 km
Diameter
2.7 d
Orbit
1684
Discovered