Major MoonMoon of Saturn

Mimas

Saturn's 'Death Star' moon with a giant impact crater.

396.4km
Diameter
185,539km
From Saturn
0.9days
Orbital Period
1789
Discovered

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

396.4km
Diameter
185,539km
Semi-major Axis
0.94days
Orbital Period
3.7493e19kg
Mass
1.15g/cm³
Density
Yes
Tidally Locked
1789
Discovery Year
William Herschel
Discovered By

Notable Facts

01

Mimas has a giant crater called Herschel that makes it look like the Death Star

02

It is the smallest body in the solar system that is rounded by self-gravity

03

Evidence suggests Mimas may have a subsurface ocean

Other Moons of Saturn

View all