Uranus Family
This montage of images of the Uranian system was prepared from an assemblage of images taken by the Voyager 2 spacecraft
during its Uranus encounter in January 1986. This artist's view shows Ariel in the forefront, Uranus rising behind, Umbriel off to
the left, Miranda in the foreground to the right, Titania fading in the distance at the far right, and Oberon in its distant orbit at
the top.
The following table summarizes the radius, mass, distance from the planet center, discoverer and the date of discovery of each
of the moons of Uranus:
Radius Mass Distance
Moon # (km) (kg) (km) Discoverer Date
-------------------------------------------------------------
Cordelia VI 13 ? 49,750 Voyager 2 1986
Ophelia VII 16 ? 53,760 Voyager 2 1986
Bianca VIII 22 ? 59,160 Voyager 2 1986
Cressida IX 33 ? 61,770 Voyager 2 1986
Desdemona X 29 ? 62,660 Voyager 2 1986
Juliet XI 42 ? 64,360 Voyager 2 1986
Portia XII 55 ? 66,100 Voyager 2 1986
Rosalind XIII 27 ? 69,930 Voyager 2 1986
Belinda XIV 34 ? 75,260 Voyager 2 1986
Puck XV 77 ? 86,010 Voyager 2 1985
Miranda V 235.8 6.33e+19 129,780 G. Kuiper 1948
Ariel I 578.9 1.27e+21 191,240 W. Lassell 1851
Umbriel II 584.7 1.27e+21 265,970 W. Lassell 1851
Titania III 788.9 3.49e+21 435,840 W. Herschel 1787
Oberon IV 761.4 3.03e+21 582,600 W. Herschel 1787
