13point8 · The universe, sourcedAll discoveries
Moon of Mars

Deimos

Mean radius6.2 km
Orbit (semi-major axis)23,457 km
Orbital period1.263 days

Asaph Hall discovered both of Mars's moons in 1877.

Radius and orbit from JPL Solar System Dynamics satellite tables.

Sources

  1. NASA Science, Phobos
  2. JPL Solar System Dynamics, Planetary Satellite Physical Parameters
  3. JPL Solar System Dynamics, Planetary Satellite Mean Elements
See it in 3D →
← PhobosCeres →

13point8 is an independent educational project. Every fact links to its source; send corrections to [email protected]. Privacy