Deimos, like Mars' 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 56% of 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.
Escape velocity from Deimos is 5.6 m/s.
The apparent magnitude of Deimos is 12.45.
Deimos, like Mars' 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 56% of 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.
Escape velocity from Deimos is 5.6 m/s. The apparent magnitude of Deimos is 12.45.
Deimos (moon)