Reference image
Object guide
Mimas is small and icy, famous for the large Herschel crater that gives it a resemblance to the Death Star. Mimas is approximately 396.4 km across.
How to observe Mimas
Mimas is resolved as a separate world mainly through imaging or spacecraft data; visually, its relationship to saturn is the key observing context.
Scientific context
Useful scale comparisons are 0.031 Earth diameters, 0.006 g surface gravity, 0.003 Earth years per orbit. These values are rounded from the catalogue measurements shown on this page.
- Radius
- 198.2 km
- Diameter
- 396.4 km
- Mass
- 37,493,000,000,000,000,000 kg
- Mean density
- 1.15 g/cm³
- Surface gravity
- 0.063 m/s² (0.006 g)
- Orbital period
- 0.942 days (0.003 years)
- Parent body
- saturn
0.031 Earth diameters0.006 g surface gravity0.003 Earth years per orbit
Source: NASA Science (checked 2026-08-09). Values are rounded catalogue measurements.
Interactive orbit model
Aug 13, 2026, 22:251×
Calculated positions / separate exploration scales