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Uranus
Meaning
Father of Saturn
Position
7
Discoverer
Sir William Herschel
Discovered
1781
Length of Day ( hrs )
17.24
Distance from Sun ( 10^6Km )
2872.5
Volume (10^10 km3)
6833
Equatorial Radius
25559
Volumetric Mean Radius
25362
Ellipticity
0.02293
Mean Density
1270
Surface Gravity
8.87
Surface Acceleration
8.69
Escape Velocity
21.3
Orbit Period
30588.740
Orbit Eccentricity
0.0457
Average Temperature
-76K/-197C
Surface Pressure
>1000bars
Average Temperature
-76K/-197C
Atmosphere
Molecular hydrogen (H2) - 82.5% (3.3%); Helium (He) - 15.2% (3.3%), Methane (CH4) - ~2.3%
Moon Count
15
Moons
Ariel
Belinda
Bianca
Caliban
Cordelia
Cressida
Desdemona
Juliet
Miranda
Oberon
Ophelia
Portia
Prospero
Puck
Rosalind
S2001/U2
S2001/U3
S2003/U1
S2003/U2
S2003/U3
Setebos
Stephano
Sycorax
Titania
Trinculo
Umbriel
Picture Copyright
N.A.S.A.