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Encyclopedia > Uranus > Satellites >Oberon

OBERON : SATELLITE IV OF URANUS


Credit : Calvin J. Hamilton/NASA


Oberon (Uranus IV) was discovered by W. Herschel in 1787. Its revolution period is 13 days and 12 hours. 

Origin of the name : click here.

Characteristics Values
Semi-major axis in km  583 519
Revolution period  13.463 days 
Rotation period  13.463 days
Orbital velocity 3 km/s
Inclination on Uranus' equator 0.07°
Eccentricity of the orbit 0.0016
Equatorial diameter (Earth=1)  0.12
Equatorial diameter 1522 km
Visual magnitude at the opposition 14.2
Flattening  0 
Mass (Uranus=1)  3.5/100 000 
Density (Water=1)  1.6 
Escape velocity 729 m/s
Reflectivity (geometric albedo ) 0.24
The highest peak 12000m
Deepest pit 2000m
Atmosphere aucune
Composition ice  
silicates