Phobos

Phobos is a celestial body with an apparent magnitude of 11.8 and an albedo of 0.071. It has a diameter of 22.5 and a mass of 10.66. The density of Phobos is 1.876, and its surface gravity is 0.0057. The name is pronounced "ˈfoːbɔs".

The object was discovered on August 17 and August 18, 1877. It orbits with a semi-major axis of 9377.1 and an eccentricity of 0.0151. The orbital inclination is 26.04, and the orbital period is 0.3189. Phobos is referenced by 785 other encyclopedia articles.