Mimas

Mimas is Saturn's innermost major moon and also the smallest of that group.[1] JPL lists its mean radius as 198.2 kilometres.[2]

History

Mimas was first spotted by William Herschel in 1789, on Sept. 17.[1]

Findings

Mimas belongs among the solar system's most crater-rich worlds.[1] The Mimas Test requires models for Enceladus's partly thawed water to account for Mimas's frozen state.[1] USGS maps chain-like, chasm, and crater features on Mimas.[3]

Sources

  1. Mimas | NASA Science. Licence: facts-only (Track B), no text or images reused. Attribution: NASA.
  2. Planetary Satellite Physical Parameters | NASA Jet Propulsion Laboratory. Licence: facts-only (Track B), no text reused. Attribution: NASA/JPL-Caltech.
  3. Gazetteer of Planetary Nomenclature: Mimas | USGS. Licence: US federal work, public domain (17 USC 105). Attribution: U.S. Geological Survey.

Evidence as of 2026-11-01.