This chart shows the differences between Uranus and Earth. To change the planets/moons being compared, change one or more of the form fields at the bottom and click Refresh.

	Uranus	Earth
Discovered By	William Herschel	Known by the Ancients
Date of Discovery	1781	Unknown
Average Orbit Distance	2,870,972,200 km	149,597,890 km
Perihelion (closest)	2,735,560,000 km	147,100,000 km
Aphelion (farthest)	3,006,390,000 km	152,100,000 km
Equatorial Radius	25,559 km	6,378.14 km
Equatorial Circumference	160,592 km	40,075 km
Volume	68,330,000,000,000 km3	1,083,200,000,000 km3
Mass	86,849,000,000,000,000,000,000,000 kg	5,973,700,000,000,000,000,000,000 kg
Density	1.30 g/cm3	5.515 g/cm3
Surface Area	8,115,600,000 km2	510,065,700 km2
Equatorial Surface Gravity	8.43 m/s2	9.766 m/s2
Escape Velocity	76,640 km/h	40,248 km/h
Rotation Period (Length of Day)	-0.7196 sidereal days (retrograde)	0.99726968 sidereal days
Orbit Period (Length of Year)	84.02 sidereal years	1.0000174 sidereal years
Mean Orbit Velocity	24,607 km/h	107,229 km/h
Orbit Eccentricity	.047168	0.01671022
Orbital Inclination to Ecliptic	0.770 degrees	0.00005 degrees
Equatorial Inclination to Orbit	97.86 degrees	23.45 degrees
Orbital Circumference	17,620,000,000 km	924,375,700 km
Atmospheric Constituents	Hydrogen, Helium, Methane	Nitrogen, Oxygen

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