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Uranus

Uranus

MeaningFather of Saturn
Position7
DiscovererSir William Herschel
Discovered1781
Length of Day ( hrs )17.24
Distance from Sun ( 10^6Km )2872.5
Volume (10^10 km3) 6833
Equatorial Radius 25559
Volumetric Mean Radius25362
Ellipticity0.02293
Mean Density1270
Surface Gravity8.87
Surface Acceleration8.69
Escape Velocity21.3
Orbit Period30588.740
Orbit Eccentricity0.0457
Average Temperature-76K/-197C
Surface Pressure>1000bars
Average Temperature-76K/-197C
AtmosphereMolecular hydrogen (H2) - 82.5% (3.3%); Helium (He) - 15.2% (3.3%), Methane (CH4) - ~2.3%
Moon Count15
MoonsAriel
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 CopyrightN.A.S.A.