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Almanac > Moons

Phobos
Phobos is a moon which orbits the planet Mars.
 

 



Phobos
 
 
Fact Sheet

Planet

   Mars

Date Discovered

   08/17/1877

Discoverer

   Asaph Hall

Distance From Planet

   9,377 km

Mass

   1.08E+16 kg

Density

   1.75 g/cm³

Revolution Period

   0.32 days

Orbit Inclination

   1.08 degrees

Diameter

   26(X 18) km

Eccentricity

   0.015

Albedo

   0.06

Escape Velocity

   0.0069 km/s

Temperature

   ˜233 K

 
Description

Overview:
Phobos is a satellite that revolves around the planet Mars. This moon maintains a mean distance from Mars of 9,377 km. It takes this moon 0.32 days to orbit Mars.

 Details:
This moon is a relatively small moon for our solar system with a diameter of 26(X 18) km. It has an eccentricity of 0.015 and an orbit inclindation of 1.08 degrees.

 Discovery:
This moon was discovered by Asaph Hall in 1877.