Details : Item 214

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Terrestrial planets
Gas giants
Gas giants 2
Ice giants
Dwarf planets
Others

Famille : Terrestrial planets /Bird
Phobos
Moon of Mars
It sets and rises 2x each Martian day
It is predicted that in 30 to 50 million years it will
collide with the planet or break up into a planetary ring.
Properties
Albedo0.071
Radius (km)11
Mass (kg)1.660x10+16
Density (g/cm3)1.87
Gravity (m/s2)0.006
Orbital period (days)0.319
Orbital speed (km/s)2.138
Temperature (K)233
Discovery date1877 (A. Hall)