Uranus XII - 1986U1


Portia was named after a rich heiress in Shakespeare's play Merchant of Venice. It is the seventh known satellite of Uranus and was discovered by Voyager 2.

Portia Statistics
 Discovered byVoyager 2 
 Date of discovery1986 
 Mass (kg)
 Equatorial radius (km)55 
 Equatorial radius (Earth = 1)8.6234e-03 
 Mean density (gm/cm^3)
 Mean distance from Uranus (km)66,100 
 Rotational period (days)
 Orbital period (days)0.513196 
 Mean orbital velocity (km/sec)9.37 
 Orbital eccentricity0.000 
 Orbital inclination (degrees)0.09 
 Visual geometric albedo0.07 
 Magnitude (Vo)21.0 


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