Deimos moon

Deimos (pronounced DIE-moss) is one of two moons of the planet Mars. Diemos is the smaller outermost moon, and as its orbit is slowly expanding, is expected to eventually escape Mars gravity. Both Deimos and Phobos may be asteroids captured by Mars in the distant past.

rocket MMX Mission

JAXA to launch the Martian Moons eXploration (MMX) space probe in late 2024. The MMX mission will include flybys of Deimos.

Deimos image

Deimos facts

Designation: Mars II
Magnitude: 12.9
Mass: 1.8 x 15 kg
Radii: 7.5 x 6.1 x 5.5 km
Density: 1.7 gm/cm3
Distance from planet: 23,460 km
Rotational period: 1.26 days
Orbital period: 1.26 days
Orbital velocity: 1.36 km/sec
Eccentricity of orbit: 0.00
Inclination of orbit: 0.9 - 2.7 °
Albedo: 0.07
Atmosphere: none
Temperature: 233 K

Deimos surface features

There are few (yet) named features on Deimos except for a couple of craters.

Swift crater
Voltaire crater