Moons of Uranus
Uranus has 28 known natural satellites.
Major Moons
The most significant natural satellites
Miranda
The smallest major Uranian moon with an extremely varied and dramatic landscape.
471.6 km
Diameter
1.4 d
Orbit
1948
Discovered
Ariel
The brightest and possibly most geologically active of Uranus's major moons.
1,157.8 km
Diameter
2.5 d
Orbit
1851
Discovered
Umbriel
The darkest of Uranus's major moons with ancient, heavily cratered terrain.
1,169.4 km
Diameter
4.1 d
Orbit
1851
Discovered
Titania
The largest moon of Uranus with evidence of past geological activity.
1,576.8 km
Diameter
8.7 d
Orbit
1787
Discovered
Oberon
The outermost and second-largest major moon of Uranus.
1,522.8 km
Diameter
13.5 d
Orbit
1787
Discovered
Other Moons
23 smaller natural satellites
Cordelia
A small inner moon of Uranus.
40.2 km
Diameter
0.3 d
Orbit
1986
Discovered
Ophelia
A small inner moon of Uranus.
42.8 km
Diameter
0.4 d
Orbit
1986
Discovered
Bianca
A small inner moon of Uranus.
51.4 km
Diameter
0.4 d
Orbit
1986
Discovered
Cressida
A small inner moon of Uranus.
79.6 km
Diameter
0.5 d
Orbit
1986
Discovered
Desdemona
A small inner moon of Uranus.
64 km
Diameter
0.5 d
Orbit
1986
Discovered
Juliet
A small inner moon of Uranus.
93.6 km
Diameter
0.5 d
Orbit
1986
Discovered
Portia
A small inner moon of Uranus.
135.2 km
Diameter
0.5 d
Orbit
1986
Discovered
Rosalind
A small inner moon of Uranus.
72 km
Diameter
0.6 d
Orbit
1986
Discovered
Cupid
A small inner moon of Uranus.
17.8 km
Diameter
0.6 d
Orbit
2003
Discovered
Belinda
A small inner moon of Uranus.
90.4 km
Diameter
0.6 d
Orbit
1986
Discovered
Perdita
A small inner moon of Uranus.
30 km
Diameter
0.6 d
Orbit
1986
Discovered
Puck
A small inner moon of Uranus.
162 km
Diameter
0.8 d
Orbit
1985
Discovered
Mab
A small inner moon of Uranus.
24.8 km
Diameter
0.9 d
Orbit
2003
Discovered
Francisco
An irregular moon of Uranus.
22 km
Diameter
266.6 d
Orbit
2001
Discovered
Caliban
An irregular moon of Uranus.
72 km
Diameter
579.7 d
Orbit
1997
Discovered
Stephano
An irregular moon of Uranus.
32 km
Diameter
677.4 d
Orbit
1999
Discovered
Trinculo
An irregular moon of Uranus.
18 km
Diameter
749.2 d
Orbit
2001
Discovered
Sycorax
An irregular moon of Uranus.
150 km
Diameter
1288.3 d
Orbit
1997
Discovered
Margaret
An irregular moon of Uranus.
20 km
Diameter
1687.0 d
Orbit
2003
Discovered
Prospero
An irregular moon of Uranus.
50 km
Diameter
1978.3 d
Orbit
1999
Discovered
Setebos
An irregular moon of Uranus.
48 km
Diameter
2225.2 d
Orbit
1999
Discovered
Ferdinand
An irregular moon of Uranus.
20 km
Diameter
2887.2 d
Orbit
2001
Discovered
S/2003 U 3
An irregular moon of Uranus.
20 km
Diameter
2500.0 d
Orbit
2003
Discovered