CHARACTERISTICS OF URANUS

Characteristics	Values
Semi-major axis in astronomical units (au)	19.218 45
Semi-major axis in km	2 875 038 607
Eccentricity of the orbit	0.04638
Inclination of the orbit on the ecliptic	0°.7732
Inclination of the equator on the ecliptic	97°.86
Sidereal revolution period	84 years and 7.48 days
Rotation period	17.24 hours
Orbital velocity	7 km/s
Apparent equatorial diameter at the smallest distance from the Earth (maximum value)	4".1
Equatorial diameter (Earth=1)	4.0073
Equatorial diameter	51 118 km
Visual magnitude at the opposition	5.52
Flattening	1/44
Volume (Earth=1)	62.9
Mass (Sun=1)	1/22 905.35
Mass (Earth=1)	14.54
Mass Uranus+satellites (Sun=1)	1/22 902.94
Mass Uranus+satellites (Uranus=1)	1.0001
Density (Earth=1)	0.23
Density (water=1)	1.27
Gravity at the surface (Earth=1)	0.90
Escape velocity	21 300 m/s
Reflectivity (geometric albedo)	0.51
The highest peak	28 000 m
Deepest pit	0 m
Cloud Temperature	-193°C
Atmospheric pressure at cloud level (Earth=1)	1.2
Atmosphere	Hydrogen 83% Helium 15% Methane 2%

Credit : Observatory of Rio de Janeiro/CNPQ

Telescopic Uranus Image taken on 24/06/1996 at 6h 2m 56s (TU): notice the satellites around the planet (north is up and east left).