Site hosted by Build your free website today!


Semimajor Axis of Orbit 23,459 km
Siderial Revolution Period 1d 6h 18m
Orbit Eccentricity 0.0005
Orbital Inclination 0.9 - 2.7
Radius 8 x 6 x 6 km
Visual Magnitude 12.9

Deimos, also discovered by Asaph Hall in 1877, is named after Panic, one of the dogs of the god Mars. It too is believed to be a captured asteroid due to its size. The Viking I spacecraft in 1975 provided the only good pictures ever taken of Deimos.