18. Deimos

18. Deimos

Courtesy of NASA/JPL-Caltech/University of Arizona

http://photojournal.jpl.nasa.gov/catalog/PIA11826


Moon of Mars

Diameter: 15x12.2x10.4 km
Orbit Radius: 23,459 km
Orbital Period: 1.3 days
Rotational Period: 1.3 days
Average Temperature: -40°C
Composition: Rocky
Atmospheric Pressure: 0 bars
Gravity (Earth=1): 0.0
Mass (Earth=1): 0.0000000003
Magnetic Field: Unknown