Saturnian Satellite Fact Sheet


[Montage of Saturn and some of its satellites]

Bulk parameters
  Mass
(1020 kg)
Radius
(km)
Mean density
(kg/m3)
Visual
geometric albedo
   
Major Satellites  
  Mimas (SI) 0.379 208 x 197 x 191 1150 0.6
  Enceladus (SII) 1.08 257 x 251 x 248 1610 1.0
  Tethys (SIII) 6.18 538 x 528 x 526 985 0.8
  Dione (SIV) 11.0 563 x 561 x 560 1480 0.7
  Rhea (SV) 23.1 765 x 763 x 762 1240 0.7
 
  Titan (SVI) 1,345.5 2,575 1880 0.22
  Hyperion (SVII) 0.056 180 x 133 x 103 550 0.3
  Iapetus (SVIII) 18.1 746 x 746 x 712 1090 0.05 / 0.5
 
Lesser Satellites  
  Pan (SXVIII, S/1981 S13) 0.00005 17 x 16 x 10 420 0.5
  Daphnis (SXXXV, S/2005 S1) 0.000001 4.3 x 4.1 x 3.2 340  
  Atlas (SXV, S/1980 S28) 0.00007 20 x 18 x 9 500 0.8
  Prometheus (SXVI, S/1980 S27) 0.0016 68 x 40 x 30 480 0.5
  Pandora (SXVII, S/1980 S26) 0.0014 52 x 41 x 32 490 0.7
  Epimetheus (SXI, S/1980 S3) 0.0053 65 x 57 x 53 640 0.8
  Janus (SX, S/1980 S1) 0.0190 102 x 93 x 76 630 0.9
 
  Aegaeon (LIII, S/2008 S1)   0.5    
  Methone (SXXXII, S/2004 S1)   1.6    
  Anthe (XLIX, S/2007 S4)   ~1    
  Pallene (SXXXIII, S/2004 S2)   2.9 x 2.8 x 2.0    
  Calypso (SXIV, S/1980 S25) 0.00004 15 x 12 x 7 1000 1.0
  Telesto (SXIII, S/1980 S13) 0.00007 16 x 12 x 10 1000 1.0
  Helene (SXII, S/1980 S6) 0.0003 22 x 19 x 13 1300 0.7
  Polydeuces (SXXXIV, S/2004 S5)   1.5 x 1.2 x 1.0  
 
  Kiviuq (SXXIV, S/2000 S5)   ~7   0.06
  Ijiraq (SXXII, S/2000 S6)   ~5   0.06
  Phoebe (SIX) 0.083 109 x 109 x 102 1640 0.08
  Paaliaq (SXX, S/2000 S2)   ~10   0.06
  Skathi (SXXVII, S/2000 S8)   ~3   0.06
  Albiorix (SXXVI, S/2000 S11)   ~13   0.06
  Bebhionn (XXXVII, S/2004 S11)   ~3  
  Erriapus (SXXVIII, S/2000 S10)   ~4   0.06
  Siarnaq (SXXIX, S/2000 S3)   ~16   0.06
  Skoll (XLVII, S/2006 S8)   ~3  
  Tarvos (SXXI, S/2000 S4)   ~7   0.06
  Tarqeq (SLII, S/2007 S1)   ~3  
 
  Greip (SLI, S/2006 S4)   ~3  
  Hyrrokkin (SXLIV, S/2004 S19)   ~4  
  Mundilfari (SXXV, S/2000 S9)   ~3   0.06
  Jarnsaxa (SL, S/2006 S6)   ~3  
  Narvi (SXXXI, S/2003 S1)   ~3   0.06
  Bergelmir (XXXVIII, S/2004 S15)   ~3  
  Suttungr (SXXIII, S/2000 S12)   ~3   0.06
  Hati (XLIII, S/2004 S14)   ~3  
  Bestla (SXXXIX, S/2004 S18)   ~3  
  Farbauti (SXL, S/2004 S9)   ~3  
  Thrymr (SXXX, S/2000 S7)   ~3   0.06
  Aegir (SXXXVI, S/2004 S10)   ~3  
  Kari (SXLV, S/2006 S2)   ~3  
  Fenrir (SXLI, S/2004 S16)   ~2  
  Surtur (SXLVIII, S/2006 S7)   ~3  
  Loge (SXLVI, S/2006 S5)   ~3  
 
  Ymir (SXIX, S/2000 S1)   ~9   0.06
  Fornjot (SXLII, S/2004 S8)   ~3  
 
Recently Discovered (Unnamed) Satellites  
  S/2004 S07   ~3  
  S/2004 S12   ~3  
  S/2004 S13   ~3  
  S/2004 S17   ~2  
 
  S/2006 S1   ~3  
  S/2006 S3   ~3  
 
  S/2007 S2   ~3  
  S/2007 S3   ~3  
 
  S/2009 S1   0.3  


Orbital parameters
  Semi-major
axis
(103km)
Semi-major
axis
(Saturnian Radii)
Orbital
Period*
(days)
Rotation
Period
(days)
Inclination
(degrees)
Eccentricity
   
Major Satellites  
  Mimas (SI) 185.52 3.0783 0.9424218 S 1.53 0.0202
  Enceladus (SII) 238.02 3.9494 1.370218 S 0.00 0.0045
  Tethys (SIII) 294.66 4.8892 1.887802 S 1.86 0.0000
  Dione (SIV) 377.40 6.2620 2.736915 S 0.02 0.0022
  Rhea (SV) 527.04 8.7449 4.517500 S 0.35 0.0010
 
  Titan (SVI) 1,221.83 20.273 15.945421 S 0.33 0.0292
  Hyperion (SVII) 1,481.1 24.575 21.276609 C 0.43 0.1042
  Iapetus (SVIII) 3,561.3 59.091 79.330183 S 14.72 0.0283
 
Lesser Satellites  
  Pan (SXVIII, S/1981 S13) 133.583 2.2165 0.5750   0.0 0.000
  Daphnis (SXXXV, S/2005 S1) 136.500 2.26 0.594   0.0 0.000
  Atlas (SXV, S/1980 S28) 137.670 2.2820 0.6019   0.3 0.000
  Prometheus (SXVI, S/1980 S27) 139.353 2.2843 0.6130   0.0 0.00204
  Pandora (SXVII, S/1980 S26) 141.700 2.3512 0.6285   0.0 0.0042
  Epimetheus (SXI, S/1980 S3) 151.422 2.5099 0.6942 S 0.34 0.009
  Janus (SX, S/1980 S1) 151.472 2.5125 0.6945 S 0.14 0.007
 
  Aegaeon (LIII, S/2008 S1) 167.5 2.78 0.8081   0.001 0.0002
  Methone (SXXXII, S/2004 S1) 194 3.22 1.01  
  Anthe (XLIX, S/2007 S4) 197.7 3.28 1.04   0.1 0.001
  Pallene (SXXXIII, S/2004 S2) 211 3.50 1.14  
  Calypso (SXIV, S/1980 S25) 294.66 4.8892 1.8878   1.473 0.001
  Telesto (SXIII, S/1980 S13) 294.66 4.8892 1.8878   1.158 0.001
  Helene (SXII, S/1980 S6) 377.40 6.262 2.7369   0.0 0.005
  Polydeuces (SXXXIV, S/2004 S5) 377.40 6.26 2.74  
 
  Kiviuq (SXXIV, S/2000 S5) 11,110 184. 449   48.7 0.334
  Ijiraq (SXXII, S/2000 S6) 11,120 185. 451   49.1 0.316
  Phoebe (SIX) 12,944 215. 548R 0.4 174.8 0.164
  Paaliaq (SXX, S/2000 S2) 15,200 252. 687   47.2 0.364
  Skathi (SXXVII, S/2000 S8) 15,540 258. 728R   148.5 0.270
  Albiorix (SXXVI, S/2000 S11) 16,180 268. 783   34.0 0.469
  Bebhionn (XXXVII, S/2004 S11) 17,120 284. 835   35.0 0.469
  Erriapus (SXXVIII, S/2000 S10) 17,340 288. 871   34.6 0.474
  Siarnaq (SXXIX, S/2000 S3) 17,530 291. 896   45.6 0.295
  Skoll (XLVII, S/2006 S8) 17,670 293. 878R   161.2 0.464
  Tarvos (SXXI, S/2000 S4) 17,980 298. 926   33.8 0.531
  Tarqeq (SLII, S/2007 S1) 18,010 299. 888   46.1 0.160
 
  Greip (SLI, S/2006 S4) 18,210 302. 921R   179.8 0.326
  Hyrrokkin (SXLIV, S/2004 S19) 18,440 306. 932R   151.4 0.333
  Mundilfari (SXXV, S/2000 S9) 18,690 310. 953R   169.4 0.210
  Jarnsaxa (SL, S/2006 S6) 18,810 312. 965R   163.3 0.216
  Narvi (SXXXI, S/2003 S1) 19,010 315. 1004R   145.8 0.431
  Bergelmir (XXXVIII, S/2004 S15) 19,340 321. 1006R   158.5 0.142
  Suttungr (SXXIII, S/2000 S12) 19,460 323. 1017R   175.8 0.114
  Hati (XLIII, S/2004 S14) 19,860 330. 1039R   165.8 0.372
  Bestla (SXXXIX, S/2004 S18) 20,130 334. 1084R   145.2 0.521
  Farbauti (SXL, S/2004 S9) 20,390 338. 1086R   156.4 0.206
  Thrymr (SXXX, S/2000 S7) 20,470 340. 1094R   175.0 0.470
  Aegir (SXXXVI, S/2004 S10) 20,740 344. 1117R   166.7 0.252
  Kari (SXLV, S/2006 S2) 22,120 367. 1234R   156.3 0.478
  Fenrir (SXLI, S/2004 S16) 22,450 373. 1260R   164.9 0.136
  Surtur (SXLVIII, S/2006 S7) 22,710 377. 1298R   177.5 0.451
  Ymir (SXIX, S/2000 S1) 23,040 383. 1312R   173.1 0.335
  Loge (SXLVI, S/2006 S5) 23,070 383. 1313R   167.9 0.187
  Fornjot (SXLII, S/2004 S8) 25,110 417. 1491R   170.4 0.206
 
Recently Discovered (Unnamed) Satellites  
 
  S/2004 S07 21,000 348. 1140R   165.1 0.580
  S/2004 S12 19,890 330. 1046R   164.0 0.401
  S/2004 S13 18,400 305. 933R   167.4 0.273
  S/2004 S17 19,450 323. 986R   166.6 0.259
 
  S/2006 S1 18,980 315. 1015R   154.2 0.130
  S/2006 S3 22,100 367. 1227R   150.8 0.471
 
  S/2007 S2 16,730 278. 808R   176.7 0.218
  S/2007 S3 18,980 315. 978R   177.2 0.130
 
  S/2009 S1 117 1.94 0.4715   0.0 0.000

*R indicates retrograde motion
S indicates synchronous rotation - the rotation period is the same as the orbital period
C indicates chaotic rotation

Out from the shadows: Two new Saturnian moons - NASA press release (16 August 2004)
Discovery of four new moons of Saturn announced - Cornell University Press Release
Ring plane crossings yield no new satellite discoveries

Saturn's Known Satellites - Carnegie Institution, DTM

There are uncertainties in most radius values, most regular satellite values rounded from P.C. Thomas, Icarus, 208, 395-401, 2010


Saturn Fact Sheet
Saturn 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, 13 July 1995
Last Updated: 13 October 2015, DRW