Uranian Satellite Fact Sheet


[Uranus and some satellites]
Bulk parameters
  Mass
(1020 kg)
Radius/
(km)
Mean density
(kg/m3)
Visual
geometric albedo
   
Major Satellites  
  Miranda (UV) 0.66 240 x 234.2 x 232.9 1,200 0.32
  Ariel (UI) 12.9 581.1 x 577.9 x 577.7 1,590 0.39
  Umbriel (UII) 12.2 584.7 1,460 0.21
  Titania (UIII) 34.2 788.9 1,660 0.27
  Oberon (UIV) 28.8 761.4 1,560 0.23
   
Lesser Satellites  
  Cordelia (UVI, S/1986 U7)   20   0.07
  Ophelia (UVII, S/1986 U8)   21   0.07
  Bianca (UVIII, S/1986 U9)   27   0.07
  Cressida (UIX, S/1986 U3)   41   0.07
  Desdemona (UX, S/1986 U6)   35   0.08
  Juliet (UXI, S/1986 U2)   53   0.08
    
  Portia (UXII, S/1986 U1)   70   0.07
  Rosalind (UXIII, S/1986 U4)   36   0.07
  Cupid (S/2003 U2)   9   0.07
  Belinda (UXIV, S/1986 U5)   45   0.07
  Perdita (XXV, S/1986 U10)   13   0.07
  Puck (UXV, S/1985 U1)   81   0.10
  Mab (S/2003 U1)   12   0.10
    
  Francisco (XXII, S/2001 U3)   11   0.04
  Caliban (UXVI, S/1997 U1)   36   0.04
  Stephano (UXX, S/1999 U2)   16   0.04
  Trinculo (UXXI, S/2001 U1)   9   0.04
  Sycorax (UXVII, S/1997 U2)   75   0.04
    
  Margaret (UXXIII, S/2003 U3)   10   0.04
  Prospero (UXVIII, S/1999 U3)   25   0.04
  Setebos (UXIX, S/1999 U1)   24   0.04
  Ferdinand (XXIV, S/2001 U2)   10   0.04


Orbital parameters
    Orbital Rotation  
  Semimajor axis Period* Period Inclination Eccentricity
  (103km) (Uranian Radii) (days) (days) (degrees)  
   
Major Satellites  
  Miranda (UV) 129.90 5.078 1.413479 S 4.34 0.0013
  Ariel (UI) 199.90 7.481 2.520379 S 0.04 0.0012
  Umbriel (UII) 266.00 10.41 4.144176 S 0.13 0.0039
  Titania (UIII) 436.30 17.05 8.705867 S 0.08 0.0011
  Oberon (UIV) 583.50 22.79 13.463234 S 0.07 0.0014
   
Lesser Satellites  
  Cordelia (UVI, S/1986 U7) 49.80 1.948 0.335034   0.08 0.0003
  Ophelia (UVII, S/1986 U8) 53.80 2.105 0.376400   0.10 0.0099
  Bianca (UVIII, S/1986 U9) 59.20 2.316 0.434579   0.19 0.0009
  Cressida (UIX, S/1986 U3) 61.80 2.418 0.463570   0.01 0.0004
  Desdemona (UX, S/1986 U6) 62.70 2.453 0.473650   0.11 0.0001
  Juliet (UXI, S/1986 U2) 64.40 2.520 0.493065   0.07 0.0007
   
  Portia (UXII, S/1986 U1) 66.10 2.586 0.513196   0.06 0.0001
  Rosalind (UXIII, S/1986 U4) 69.90 2.735 0.558460   0.28 0.0001
  Cupid (S/2003 U2 74.39 2.911 0.613   0.10  
  Belinda (UXIV, S/1986 U5) 75.30 2.946 0.623527   0.03 0.0001
  Perdita (XXV, S/1986 U10) 76.42 2.990 0.638   0.47  
  Puck (UXV, S/1985 U1) 86.00 3.365 0.761833   0.32 0.0001
  Mab (S/2003 U1) 97.74 3.824 0.923   0.13  
   
  Francisco (XXII, S/2001 U3) 4276. 167.3 266.6R   147.25 0.1324
  Caliban (UXVI, S/1997 U1) 7231. 282.9 579.5R   141.53 0.1812
  Stephano (UXX, S/1999 U2) 8004. 313.2 676.5R   143.82 0.2248
  Trinculo (UXXI, S/2001 U1) 8504. 332.7 758.1R   166.93 0.2194
  Sycorax (UXVII, S/1997 U2) 12179. 476.5 1283.4R   159.42 0.5219
   
  Margaret (UXXIII, S/2003 U3) 14345. 561.3 1694.8   57.37 0.6772
  Prospero (UXVIII, S/1999 U3) 16256. 636.0 1977.3R   151.83 0.4445
  Setebos (UXIX, S/1999 U1) 17418. 681.5 2234.8R   158.24 0.5908
  Ferdinand (XXIV, S/2001 U2) 20901. 817.8 2823.4R   169.79 0.3993

R indicates retrograde motion
S indicates synchronous rotation - the rotation period is the same as the orbital period Satellites from Francisco out referenced to ecliptic plane instead of equator


New Uranian Satellite Discovered (1999)
Two new Uranian Satellites Discovered (1997)

Uranus' Known Satellites - Carnegie Institution, DTM


Uranus Fact Sheet
Uranus Home Page
Notes on the Factsheets
Directory to other Planetary Fact Sheets

NASA
Author/Curator:
Dr. David R. Williams, dave.williams@nasa.gov
NSSDCA, Mail Code 690.1
NASA Goddard Space Flight Center
Greenbelt, MD 20771
+1-301-286-1258


NASA Official: Ed Grayzeck, edwin.j.grayzeck@nasa.gov
V1.0, 14 July 1995
Last Updated: 14 September 2016, DRW