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.
JAXA to launch the Martian Moons eXploration (MMX) space probe in late 2024. The MMX mission will include flybys of Deimos.
There are few (yet) named features on Deimos except for a couple of craters.
