| Deimos |
| Deimos is the furthermost of Mar�s two moons, as well as being the smallest known moon in the solar system. In Greek mythology, Deimos is one of the sons of Aphrodite and Ares (Venus and Mars.) Deimos is also the Greek word for �panic.� The moon is also composed of carbon-rich rock, asteroids, and ice. Its surface has many craters. It was discovered on August 10th, 1877, and photographed in 1977 by the Viking 1. Deimos is most likely an asteroid from Jupiter that was caught in Mar�s orbit. Diameter: 12.6 km (15 x 12.2 x 11) Mass: 1.8e15 kg Orbit: 23,459 km from Mars |