World
Deimos
Deimos is the smaller of Mars’s two moons, a small lumpy rock covered in craters, about 12 km across.
See it live
Where it is right now is on the live 3D map.
Key facts
- Diameter
- 12 km
- Goes round
- Mars
See it from here
Not by eye: Deimos is magnitude 12.4 at its best and close to Mars, whose glare drowns it; it was found in 1877 with a 26-inch telescope.
How the map draws it
Drawn in its measured shape and in one colour: there is no surface map of Deimos here, and the colour is chosen from published descriptions, not measured · lit as a camera exposed for its own sunlight would show it · seen from far off it is a light at its computed brightness: the glow is how a camera records a point too bright to resolve.