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.
Discovered by Voyager 2
Date of discovery 1986
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 eccentricity 0.000
Orbital inclination (degrees) 0.09
Visual geometric albedo 0.07
Magnitude (Vo) 21.0
Uranus Juliet Rosalind
Copyright © 1997 by Calvin J. Hamilton. All rights reserved.