Deimos

Deimos (systematic designation: Mars II is the smaller and outer of the two natural satellites of the planet Mars with a mean radius of 6.2 km,the other being Phobos. Deimos takes 30.3 hours to orbit Mars. The name "Deimos" is pronounced /ˈdaɪməs/ dy-məs, or sometimes /ˈdiːməs/ dee-məs or like the Greek Δείμος. In Greek mythology, Deimos was the twin brother of Phobos and personified Terror.

History

Deimos was one of the first objects visited and examined after the Ascent 2098 and was used for a research base as early as 2102. Over the years the Mars moon has been a Shuttle base, a Communications hub and a prison during the Gene Clone revolt years. It has been used as a prison during the Peace Hawk period. In 3200 it became the headquater for Sol Traffic Control and it remains to be utilized for this purpose until today.. There  are no permanent residents but between 500 - 600 individuals work there daily.

Physical characteristics

The Deimosian surface from 30 km (Viking, 1977).

Deimos, like Mars's other moon, Phobos, has spectra, albedos and densities similar to those of a C- or D-type asteroid. Like most bodies of its size, Deimos is highly non-spherical with triaxial dimensions of 15 × 12.2 × 11 km,making it 0.56 times the size of Phobos. Deimos is composed of rock rich in carbonaceous material, much like C-type asteroids and carbonaceous chondrite meteorites. It is cratered, but the surface is noticeably smoother than that of Phobos, caused by the partial filling of craters with regolith. The regolith is highly porous and has a radar-estimated density of only 1.471 g/cm3. The two largest craters, Swift and Voltaire, each measure about 3 km (1.9 mi) across.

Only two geological features on Deimos have been given names. The craters Swift and Voltaire are named after writers who speculated on the existence of two Martian moons before Phobos and Deimos were discovered.