Deimos
The smaller, outer moon of Mars.
Deimos is the smaller and outer of Mars's two moons, with a mean radius of 6.2 km. It orbits 23,460 km from Mars every 30.3 hours.
Asaph Hall discovered it at the US Naval Observatory on 12 August 1877, shortly before he found Phobos. It is named after the Greek personification of dread.
Quick Facts
- Adjectives
- Deimian ˈ
- d
- aɪ
- m
- i
- ə
- n
- Discoverer
- Asaph Hall
- Discovered
- 12 August 1877
- Inclination
- 0.93° (to Mars's equator)
- 1.791° (to the local Laplace plane)
- 27.58° (to the ecliptic)
- Satellite of
- Mars
- Dimensions
- 16.08, ×, 11.78, ×, 10.22 km (± 0.16, ×, 0.12, ×, 0.10 km / 328 ft)
- Rotation
- Synchronous
- Albedo
- 0.068, 0.007
More in Celestial Bodies & Worlds
Elsewhere in Cosmos Codex
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