Jovian Satellite Fact Sheet


Jupiter and the Galilean Satellites
Bulk parameters
  Mass
(1020 kg)
Radius
(km)
Mean density
(kg/m3)
Visual
geometric albedo
   
Galilean Satellites  
  Io (JI) 893.2 1821.5 3530 0.62
  Europa (JII) 480.0 1560.8 3010 0.68
  Ganymede (JIII) 1481.9 2631.2 1940 0.44
  Callisto (JIV) 1075.9 2410.3 1830 0.19
 
Lesser Satellites  
  Metis (JXVI, S/1979 J3) 0.001 30 x 20 x 17   0.06
  Adrastea (JXV, S/1979 J1) 0.0002 10 x 8 x 7   0.10
  Amalthea (JV) 0.075 125 x 73 x 64 3100 0.09
  Thebe (JXIV, S/1979 J2) 0.008 58 x 49 x 42   0.05
 
  Themisto (JXVIII, S/1975 J1)   4   0.04
 
  Leda (JXIII) 0.00006 5   0.07
  Himalia (JVI) 0.095 85   0.03
  Lysithea (JX) 0.0008 12   0.06
  Elara (JVII) 0.008 40   0.03
 
  S/2000 J11   2.0   0.04
 
  Carpo (XLVI, S/2003 J20)   3.0  
  Euporie (JXXXIV, S/2001 J10)   1.0  
  Orthosie (JXXXV, S/2001 J9)   1.0  
  Euanthe (JXXXIII, S/2001 J7)   1.5  
  Thyone (JXXIX, S/2001 J2)   2.0  
  Mneme (JXL, S/2003 J21)   2.0  
  Harpalyke (JXXII, S/2000 J5)   2.2   0.04
  Hermippe (JXXX, S/2001 J3)   2.0  
  Praxidike (JXXVII, S/2000 J7)   3.4   0.04
  Thelxinoe (XLII, S/2003 J22)   2.0  
  Helike (XLV, S/2003 J6)   4.0  
  Iocaste (JXXIV, S/2000 J3)   2.6   0.04
  Ananke (JXII) 0.0004 10   0.06
 
  Herse (L, S/2003 J17)   2.0  
  Eurydome (JXXXII, S/2001 J4)   1.5  
  Arche (XLIII, S/2002 J1)   1.5  
  Autonoe (JXXVIII, S/2001 J1)   2.0  
  Pasithee (JXXXVIII, S/2001 J6)   1.0  
  Chaldene (JXXI, S/2000 J10)   1.9   0.04
  Kale (JXXXVII, S/2001 J8)   1.0  
  Isonoe (JXXVI, S/2000 J6)   1.9   0.04
  Aitne (JXXXI, S/2001 J11)   1.5  
  Erinome (JXXV, S/2000 J4)   1.6   0.04
  Taygete (JXX, S/2000 J9)   2.5   0.04
  Carme (JXI) 0.001 15   0.06
  Sponde (JXXXVI, S/2001 J5)   1.0  
  Kalyke (JXXIII, S/2000 J2)   2.6   0.04
  Pasiphae (JVIII) 0.003 18   0.10
  Eukelade (XLVII, S/2003 J1)   4.0  
  Megaclite (JXIX, S/2000 J8)   2.7   0.04
  Sinope (JIX) 0.0008 14   0.05
  Hegemone (JXXXIX, S/2003 J8)   3.0  
  Aoede (XLI, S/2003 J7)   4.0  
  Kallichore (XLIV, S/2003 J11)   2.0  
 
  Callirrhoe (JXVII, S/1999 J1)   4   0.04
  Cyllene (XLVIII, S/2003 J13)   2.0  
  Kore (XLIX, S/2003 J14)   2.0  
 
Recently Discovered Unnamed Satellites  
  S/2003 J2   2.0  
  S/2003 J3   2.0  
  S/2003 J4   2.0  
  S/2003 J5   4.0  
  S/2003 J9   1.0  
  S/2003 J10   2.0  
  S/2003 J12   1.0  
  S/2003 J15   2.0  
  S/2003 J16   2.0  
  S/2003 J18   2.0  
  S/2003 J19   2.0  
  S/2003 J23   2.0  
  S/2010 J1   2.0  
  S/2010 J2   2.0  
  S/2011 J1   2.0  
  S/2011 J2   2.0  


Orbital parameters
  Semi-major
axis
(103km)
Semi-major
axis
(Jovian Radii)
Orbital
Period*
(days)
Rotation
Period
(days)
Inclination
(degrees)
Eccentricity
   
Galilean Satellites  
  Io (JI) 421.8 5.91 1.769138 S 0.04 0.004
  Europa (JII) 671.1 9.40 3.551181 S 0.47 0.009
  Ganymede (JIII) 1070.4 14.97 7.154553 S 0.18 0.001
  Callisto (JIV) 1882.7 26.33 16.689017 S 0.19 0.007
 
Lesser Satellites  
  Metis (JXVI, S/1979 J3) 128.0 1.79 0.294779 S 0.06 0.0002
  Adrastea (JXV, S/1979 J1) 129.0 1.80 0.298260 S 0.03 0.0015
  Amalthea (JV) 181.4 2.54 0.498179 S 0.40 0.003
  Thebe (JXIV, S/1979 J2) 221.9 3.11 0.6745 S 0.8 0.018
 
  Themisto (JXVIII, S/1975 J1) 7507 105.00 130.02   45.67 0.242
 
  Leda (JXIII) 11170 156.2 240.92   27.47 0.164
  Himalia (JVI) 11460 160.3 250.5662 0.4 27.63 0.162
  Lysithea (JX) 11720 163.9 259.22   27.35 0.112
  Elara (JVII) 11740 164.2 259.6528 0.5 24.77 0.217
 
  S/2000 J11 12560 175.7 287.0   28.2 0.248
 
  Carpo (XLVI, S/2003 J20) 16990 237.6 456.1   51.4 0.430
  Euporie (JXXXIV, S/2001 J10) 19390 271.2 553.1R   147.0 0.156
  Orthosie (JXXXV, S/2001 J9) 20720 289.8 622.6R   145.9 0.281
  Euanthe (JXXXIII, S/2001 J7) 20800 290.9 620.6R   148.9 0.232
  Thyone (JXXIX, S/2001 J2) 20940 292.9 627.3R   148.5 0.229
  Mneme (JXL, S/2003 J21) 21070 294.7 620.0R   148.6 0.227
  Harpalyke (JXXII, S/2000 J5) 21110 295.3 623.3R   148.7 0.227
  Hermippe (JXXX, S/2001 J3) 21130 295.6 633.9R   150.7 0.210
  Praxidike (JXXVII, S/2000 J7) 21150 295.8 625.3R   148.7 0.220
  Thelxinoe (XLII, S/2003 J22) 21160 296.0 628.1R   151.4 0.221
  Helike (XLV, S/2003 J6) 21260 297.4 634.8R   154.8 0.156
  Iocaste (JXXIV, S/2000 J3) 21270 297.5 631.5R   159.7 0.218
  Ananke (JXII) 21280 297.7 629.8R   148.9 0.244
 
  Eurydome (JXXXII, S/2001 J4) 22870 319.9 717.3R   150.3 0.276
  Arche (XLIII, S/2002 J1) 22930 320.7 723.9R   165.0 0.259
  Autonoe (JXXVIII, S/2001 J1) 23040 322.3 762.7R   152.9 0.334
  Herse (L, S/2003 J17) 23097 323.1 715.4R   164.2 0.200
  Pasithee (JXXXVIII, S/2001 J6) 23100 323.1 716.3R   165.4 0.288
  Chaldene (JXXI, S/2000 J10) 23180 324.2 723.8R   165.4 0.238
  Kale (JXXXVII, S/2001 J8) 23220 324.8 729.5R   165.0 0.260
  Isonoe (JXXVI, S/2000 J6) 23220 324.8 725.5R   165.0 0.261
  Aitne (JXXXI, S/2001 J11) 23230 324.9 730.2R   165.1 0.264
  Erinome (JXXV, S/2000 J4) 23280 325.6 728.3R   164.9 0.270
  Taygete (JXX, S/2000 J9) 23360 326.7 732.2R   165.2 0.251
  Carme (JXI) 23400 327.3 734.2R   164.9 0.253
  Sponde (JXXXVI, S/2001 J5) 23490 328.6 748.3R   151.0 0.312
  Kalyke (JXXIII, S/2000 J2) 23580 329.8 743.0R   165.2 0.243
  Pasiphae (JVIII) 23620 330.4 743.6R   151.4 0.409
  Eukelade (XLVII, S/2003 J1) 23660 330.9 746.4R   165.5 0.272
  Megaclite (JXIX, S/2000 J8) 23810 333.0 752.8R   152.8 0.421
  Sinope (JIX) 23940 334.9 758.9R   158.1 0.250
  Hegemone (JXXXIX, S/2003 J8) 23950 335.0 739.6R   155.2 0.328
  Aoede (XLI, S/2003 J7) 23980 335.4 761.5R   158.3 0.432
  Kallichore (XLIV, S/2003 J11) 24040 336.3 764.7R   165.5 0.264
 
  Callirrhoe (JXVII, S/1999 J1) 24100 337.1 758.8R   147.1 0.283
  Cyllene (XLVIII, S/2003 J13) 24350 340.6 737.8R   149.3 0.319
  Kore (XLIX, S/2003 J14) 24540 343.3 779.2R   152.4 0.325
 
Recently Discovered Unnamed Satellites  
  S/2003 J2 28570 399.6 982.5R   151.8 0.380
  S/2003 J3 18340 256.5 504.0R   143.7 0.241
  S/2003 J4 23260 325.4 723.2R   144.9 0.204
  S/2003 J5 24080 336.8 759.7R   165.0 0.210
  S/2003 J9 22440 313.9 683.0R   164.5 0.269
  S/2003 J10 24250 339.2 767.0R   164.1 0.214
  S/2003 J12 19000 265.8 533.3R   145.8 0.376
  S/2003 J15 22000 307.7 668.4R   140.8 0.110
  S/2003 J16 21000 293.7 595.4R   148.6 0.270
  S/2003 J18 20700 289.5 606.3R   146.5 0.119
  S/2003 J19 22800 318.9 701.3R   162.9 0.334
  S/2003 J23 24060 336.5 759.7R   149.2 0.309
  S/2010 J1 23314 326.1 723.2R   163.2 0.320
  S/2010 J2 20307 284.0 588.1R   150.4 0.307
  S/2011 J1 20155 281.9 580.7R   162.8 0.296
  S/2011 J2 23330 326.3 726.8R   151.9 0.387

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

Themisto (S/1975 J1) was also designated S/2000 J1
S/2000 J11 had not been seen since 2000, but was recovered in 2012


Jupiter's Known Satellites - Carnegie Institution, DTM

Galilean Satellite Fact Table
Jupiter Fact Sheet
Jupiter 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: 25 October 2016, DRW