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

	Portia	Uranus
Discovered By	S. Synnott, Voyager 2	William Herschel
Date of Discovery	1986	13 March 1781
Average Orbit Distance	66,100 km	2,870,658,186 km
Perihelion/Perigee (closest)	66,093 km	2,734,998,229 km
Aphelion/Apogee (farthest)	66,107 km	3,006,318,143 km
Equatorial Radius	67.6 km	25,362 km
Equatorial Circumference	424.7 km	159,354.1 km
Volume	1,293,983 km3	68,334,355,695,584 km3
Mass	1,681,505,981,935,050,000 kg	86,810,300,000,000,000,000,000,000 kg
Density	1.3 g/cm3	1.270 g/cm3
Surface Area	57,425.30 km2	8,083,079,690 km2
Equatorial Surface Gravity	0.025 m/s2	8.87 m/s2
Escape Velocity	207 km/h	76,968 km/h
Mean Orbit Velocity	33,732.8 km/h	24,477 km/h
Orbit Eccentricity	0.0001	0.04725744
Orbit Inclination to Ecliptic	0.059 degree	0.77 degrees
Orbit Circumference	415,318.55 km	18,026,802,831 km