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Planetary Satellite Physical Parameters

The following tables provide known physical parameters for planetary satellites. References, where known, are shown in square brackets (e.g. [1]) following the particular value. The JPL lunar constants and models technical document is also available.

Earth's Moon
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Moon 4902.801 ± 0.001[51] 1737.5 ± 0.1[3] 3.344 ± 0.005 -12.74[52] 0.12[52]

Martian System
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Phobos 0.0007112 ± 0.0000010[82] 11.1 ± 0.15[41] 1.872 ± 0.076 11.4 ± 0.2[50] 0.071 ± 0.012[56]
Deimos 0.0000985 ± 0.0000024[82] 6.2 ± 0.18[41] 1.471 ± 0.166 12.45 ± 0.05[50] 0.068 ± 0.007[57]

Jovian System
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Io 5959.916 ± 0.012[67] 1821.6 ± 0.5[45] 3.528 ± 0.006 5.02 ± 0.03[26] 0.63 ± 0.02[70]
Europa 3202.739 ± 0.009[67] 1560.8 ± 0.5[8] 3.013 ± 0.005 5.29 ± 0.02[26] 0.67 ± 0.03[69]
Ganymede 9887.834 ± 0.017[67] 2631.2 ± 1.7[58] 1.942 ± 0.005 4.61 ± 0.03[26] 0.43 ± 0.02[68]
Callisto 7179.289 ± 0.013[67] 2410.3 ± 1.5[1] 1.834 ± 0.004 5.65 ± 0.10[26] 0.17 ± 0.02[68]
Amalthea 0.138 ± 0.030[67] 83.45 ± 2.4[66] 0.849 ± 0.199 14.1 ± 0.2[35] 0.090 ± 0.005[54]
Himalia 0.45  85[31] 2.6 14.62 ± 0.02[31] 0.04 
Elara 0.058  43[31] 2.6 16.32 ± 0.02[31] 0.04 
Pasiphae 0.020  30[31] 2.6 17.00 ± 0.20[31] 0.04 
Sinope 0.0050  19[31] 2.6 18.05 ± 0.02[31] 0.04 
Lysithea 0.0042  18[31] 2.6 18.25 ± 0.04[31] 0.04 
Carme 0.0088  23[31] 2.6 17.55 ± 0.02[31] 0.04 
Ananke 0.0020  14[31] 2.6 18.75 ± 0.02[31] 0.04 
Leda 0.00073  10[31] 2.6 19.50 ± 0.03[31] 0.04 
Thebe 0.10  49.3 ± 2.0[53] 3.0 16.0[47] 0.047 ± 0.003[54]
Adrastea 0.0005  8.2 ± 2.0[53] 3.0 18.7[47] 0.1 ± 0.045[53]
Metis 0.008  21.5 ± 2.0[53] 3.0 17.5[47] 0.061 ± 0.003[54]
Callirrhoe 0.000058  4.3[13] 2.6 20.73 ± 0.04[13] 0.04[13]
Themisto 0.000046  4.0[19] 2.6 21.0[19] 0.04[19]
Megaclite 0.000014  2.7[19] 2.6 21.7[19] 0.04[19]
Taygete 0.000011  2.5[19] 2.6 21.9[19] 0.04[19]
Chaldene 0.000005  1.9[19] 2.6 22.5[19] 0.04[19]
Harpalyke 0.000008  2.2[19] 2.6 22.2[19] 0.04[19]
Kalyke 0.000013  2.6[19] 2.6 21.8[19] 0.04[19]
Iocaste 0.000013  2.6[19] 2.6 21.8[19] 0.04[19]
Erinome 0.000003  1.6[19] 2.6 22.8[19] 0.04[19]
Isonoe 0.000005  1.9[19] 2.6 22.5[19] 0.04[19]
Praxidike 0.000029  3.4[19] 2.6 21.2[19] 0.04[19]
Autonoe 0.000006  2.0[61] 2.6 22.0R[61] 0.04[61]
Thyone 0.000006  2.0[61] 2.6 22.3R[61] 0.04[61]
Hermippe 0.000006  2.0[61] 2.6 22.1R[61] 0.04[61]
Aitne 0.000003  1.5[61] 2.6 22.7R[61] 0.04[61]
Eurydome 0.000003  1.5[61] 2.6 22.7R[61] 0.04[61]
Euanthe 0.000003  1.5[61] 2.6 22.8R[61] 0.04[61]
Euporie 0.000001  1.0[61] 2.6 23.1R[61] 0.04[61]
Orthosie 0.000001  1.0[61] 2.6 23.1R[61] 0.04[61]
Sponde 0.000001  1.0[61] 2.6 23.0R[61] 0.04[61]
Kale 0.000001  1.0[61] 2.6 23.0R[61] 0.04[61]
Pasithee 0.000001  1.0[61] 2.6 23.2R[61] 0.04[61]
S/2002 J 1 0.000003  1.5[61] 2.6 22.8R[61] 0.04[61]
S/2003 J 1 0.000006  2.0[61] 2.6 22.6R[61] 0.04[61]
S/2003 J 2 0.000001  1.0[61] 2.6 23.2R[61] 0.04[61]
S/2003 J 3 0.000001  1.0[61] 2.6 23.4R[61] 0.04[61]
S/2003 J 4 0.000001  1.0[61] 2.6 23.0R[61] 0.04[61]
S/2003 J 5 0.000006  2.0[61] 2.6 22.4R[61] 0.04[61]
S/2003 J 6 0.000006  2.0[61] 2.6 22.6R[61] 0.04[61]
S/2003 J 7 0.000006  2.0[61] 2.6 22.5R[61] 0.04[61]
S/2003 J 8 0.000003  1.5[61] 2.6 22.9R[61] 0.04[61]
S/2003 J 9 0.0000001  0.5[61] 2.6 23.7R[61] 0.04[61]
S/2003 J 10 0.000001  1.0[61] 2.6 23.6R[61] 0.04[61]
S/2003 J 11 0.000001  1.0[61] 2.6 23.7R[61] 0.04[61]
S/2003 J 12 0.0000001  0.5[61] 2.6 23.9R[61] 0.04[61]
S/2003 J 13 0.000001  1.0[61] 2.6 23.2R[61] 0.04[61]
S/2003 J 14 0.000001  1.0[61] 2.6 23.6R[61] 0.04[61]
S/2003 J 15 0.000001  1.0[61] 2.6 23.5R[61] 0.04[61]
S/2003 J 16 0.000001  1.0[61] 2.6 23.3R[61] 0.04[61]
S/2003 J 17 0.000001  1.0[61] 2.6 23.4R[61] 0.04[61]
S/2003 J 18 0.000001  1.0[61] 2.6 23.4R[61] 0.04[61]
S/2003 J 19 0.000001  1.0[61] 2.6 23.7R[61] 0.04[61]
S/2003 J 20 0.000003  1.5[61] 2.6 23.0R[61] 0.04[61]
S/2003 J 21 0.000001  1.0[61] 2.6 23.3R[61] 0.04[61]
S/2003 J 22 0.000001  1.0[61] 2.6 23.5R[61] 0.04[61]
S/2003 J 23 0.000001  1.0[61] 2.6 23.6R[61] 0.04[61]

Saturnian System
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Mimas 2.5026 ± 0.0006[83] 198.20 ± 0.25[81] 1.150 ± 0.004 12.8[27] 0.6[27]
Enceladus 7.2027 ± 0.0125[83] 252.10 ± 0.10[81] 1.608 ± 0.003 11.8[27] 1.0[27]
Tethys 41.2067 ± 0.0038[83] 533.00 ± 0.70[81] 0.973 ± 0.004 10.2[27] 0.8[27]
Dione 73.1146 ± 0.0015[83] 561.70 ± 0.45[81] 1.476 ± 0.004 10.4[27] 0.6[27]
Rhea 153.9426 ± 0.0037[83] 764.30 ± 1.10[81] 1.233 ± 0.005 9.6[27] 0.6[27]
Titan 8978.1382 ± 0.0020[83] 2575.50 ± 2.00[81] 1.880 ± 0.004 8.4[27] 0.2[27]
Hyperion 0.3727 ± 0.0012[83] 135.00 ± 4.00[81] 0.542 ± 0.048 14.4[27] 0.3[27]
Iapetus 120.5038 ± 0.0080[83] 735.60 ± 1.50[81] 1.083 ± 0.007 11[27] 0.6[27]
Phoebe 0.5532 ± 0.0006[83] 106.60 ± 1.00[81] 1.634 ± 0.046 16.4[27] 0.081 ± 0.002[55]
Janus 0.12660 ± 0.00008[85] 89.4 ± 3.0[84] 0.634 ± 0.064 14.4[27] 0.6[27]
Epimetheus 0.03513 ± 0.00002[85] 56.7 ± 3.1[84] 0.689 ± 0.113 15.6[27] 0.5[27]
Helene 0.0017  16. ± 4.[41] 1.5 18.4[27] 0.6[27]
Telesto 0.00048  11.8 ± 1.0[84] 1.0 18.5[27] 1.0[27]
Calypso 0.00024  10.7 ± 1.0[84] 1.0 18.7[27] 0.7[27]
Atlas 0.00044 ± 0.00003[85] 15.3 ± 1.2[84] 0.437 ± 0.106 19.0[27] 0.4[27]
Prometheus 0.01064 ± 0.00010[85] 43.1 ± 2.0[84] 0.475 ± 0.066 15.8[27] 0.6[27]
Pandora 0.00915 ± 0.00013[85] 40.3 ± 2.2[84] 0.500 ± 0.082 16.4[27] 0.5[27]
Pan 0.00033 ± 0.00005[84] 14.8 ± 2.0[84] 0.360 ± 0.160 19.4[32] 0.5[32]
Ymir 0.00033  9[28] 2.3 21.7R[28] 0.06[28]
Paaliaq 0.00055  11.0[28] 2.3 21.3R[28] 0.06[28]
Tarvos 0.00018  7.5[28] 2.3 22.1R[28] 0.06[28]
Ijiraq 0.000080  6[28] 2.3 22.6R[28] 0.06[28]
Suttungr 0.000014  3.5[28] 2.3 23.9R[28] 0.06[28]
Kiviuq 0.00022  8[28] 2.3 22.0R[28] 0.06[28]
Mundilfari 0.000014  3.5[28] 2.3 23.8R[28] 0.06[28]
Albiorix 0.0014  16[28] 2.3 20.5R[28] 0.06[28]
Skathi 0.000021  4[28] 2.3 23.6R[28] 0.06[28]
Erriapo 0.000051  5[28] 2.3 23.0R[28] 0.06[28]
Siarnaq 0.0026  20[28] 2.3 20.1R[28] 0.06[28]
Thrymr 0.000014  3.5[28] 2.3 23.9R[28] 0.06[28]
Narvi 0.000023  3.5[64] 2.3 23.8R[64] 0.04[64]
S/2004 S 7 0.000000  3.0[74] 2.3 24.5R[74] 0.04[74]
S/2004 S 8 0.000000  3.0[74] 2.3 24.6R[74] 0.04[74]
S/2004 S 9 0.000000  2.5[74] 2.3 24.7R[74] 0.04[74]
S/2004 S 10 0.000000  3.0[74] 2.3 24.4R[74] 0.04[74]
S/2004 S 11 0.000000  3.0[74] 2.3 24.1R[74] 0.04[74]
S/2004 S 12 0.000000  2.5[74] 2.3 24.8R[74] 0.04[74]
S/2004 S 13 0.000000  3.0[74] 2.3 24.5R[74] 0.04[74]
S/2004 S 14 0.000000  3.0[74] 2.3 24.4R[74] 0.04[74]
S/2004 S 15 0.000000  3.0[74] 2.3 24.2R[74] 0.04[74]
S/2004 S 16 0.000000  2.0[74] 2.3 25.0R[74] 0.04[74]
S/2004 S 17 0.000000  2.0[74] 2.3 25.2R[74] 0.04[74]
S/2004 S 18 0.000000  3.5[74] 2.3 23.8R[74] 0.04[74]

Uranian Satellites
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Ariel 86.4 ± 5.0[86] 578.9 ± 0.6[39] 1.592 ± 0.092 13.70 ± 0.04[20] 0.39 ± 0.04[48]
Umbriel 81.5 ± 5.0[86] 584.7 ± 2.8[39] 1.459 ± 0.092 14.47 ± 0.04[20] 0.21 ± 0.02[48]
Titania 228.2 ± 5.0[86] 788.9 ± 1.8[39] 1.662 ± 0.038 13.49 ± 0.04[20] 0.27 ± 0.03[48]
Oberon 192.4 ± 7.0[86] 761.4 ± 2.6[39] 1.559 ± 0.059 13.70 ± 0.04[20] 0.23 ± 0.03[48]
Miranda 4.4 ± 0.4[86] 235.8 ± 0.7[39] 1.214 ± 0.109 15.79 ± 0.04[20] 0.32 ± 0.03[48]
Cordelia 0.0030  20.1 ± 3.[21] 1.3 23.62 ± 0.35[20] 0.07[20]
Ophelia 0.0036  21.4 ± 4.[21] 1.3 23.26 ± 0.25[20] 0.07[20]
Bianca 0.0062  25.7 ± 2.[21] 1.3 22.52 ± 0.24[20] 0.07[20]
Cressida 0.0229  39.8 ± 2.[21] 1.3 21.58 ± 0.11[20] 0.07[20]
Desdemona 0.0119  32.0 ± 4.[21] 1.3 21.99 ± 0.16[20] 0.07[20]
Juliet 0.0372  46.8 ± 4.[21] 1.3 21.12 ± 0.05[20] 0.07[20]
Portia 0.1122  67.6 ± 4.[21] 1.3 20.42 ± 0.05[20] 0.07[20]
Rosalind 0.0170  36. ± 6.[21] 1.3 21.79 ± 0.13[20] 0.07[20]
Belinda 0.0238  40.3 ± 8.[21] 1.3 21.47 ± 0.09[20] 0.07[20]
Puck 0.1931  81. ± 2.[40] 1.3 19.75 ± 0.05[20] 0.07[20]
Caliban 0.020  36[73] 1.5 22.4R[73] 0.04[73]
Sycorax 0.18  75[73] 1.5 20.8R[73] 0.04[73]
Prospero 0.0066  25[73] 1.5 23.2R[73] 0.04[73]
Setebos 0.0058  24[73] 1.5 23.3R[73] 0.04[73]
Stephano 0.0017  16[73] 1.5 24.1R[73] 0.04[73]
Trinculo 0.00031  9[73] 1.5 25.4R[73] 0.04[73]
Ferdinand 0.00042  10[73] 1.5 25.1R[73] 0.04[73]
Francisco 0.00056  11[73] 1.5 25.0R[73] 0.04[73]
Margaret 0.00042  10[73] 1.5 25.2R[73] 0.04[73]

Neptunian Satellites
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Triton 1427.6 ± 1.9[92] 1352.6 ± 2.4[7] 2.064 ± 0.011 13.472 ± 0.041[15] 0.756 ± 0.041[15]
Nereid 2.06  170. ± 25.[43] 1.5 19.7[43] 0.155[43]
Naiad 0.013  33. ± 3.[71] 1.3 23.91[71] 0.072[71]
Thalassa 0.025  41. ± 3.[71] 1.3 23.32[71] 0.091[71]
Despina 0.14  75. ± 3.[71] 1.3 22.00[71] 0.090[71]
Galatea 0.25  88. ± 4.[71] 1.3 21.85[71] 0.079[71]
Larissa 0.33  97. ± 3.[71] 1.3 21.49[71] 0.091[71]
Proteus 3.36  210. ± 7.[71] 1.3 19.75[71] 0.096[71]
Halimede 0.006  31.0[72] 1.5 19.2R[72] 0.04[72]
Psamathe 0.001  20.0[72] 1.5 25.5R[72] 0.04[72]
Sao 0.006  22.0[72] 1.5 24.5R[72] 0.04[72]
Laomedeia 0.006  21.0[72] 1.5 25.5R[72] 0.04[72]
Neso 0.011  30.0[72] 1.5 24.6R[72] 0.04[72]

Pluto's Satellite
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Charon 103.2 ± 9.3[91] 603.6 ± 1.4[88] 1.678 ± 0.151 17.26 ± 0.01[30] 0.372 ± 0.012[30]
Nix 0.011 ± 0.011[91] 44.0 ± 5.0[89] 0.5 ± 0.5 23.41 ± 0.15[90] 0.08[89]
Hydra 0.066 ± 0.066[91] 36.0 ± 5.0[89] 5.0 ± 5.0 22.96 ± 0.15[90] 0.18[89]

Table Column Headings

GM GM: G = 6.67259x10-20(kg-1 km3 sec-2), M = mass (kg), if the density is assumed (i. e. has no
uncertainty) the value is computed from the density and mean radius
Mean radius Mean radius: if no uncertainty is given, the value is computed from the magnitude and albedo
Mean density Mean density: derived from the GM and mean radius when an uncertainty is given, otherwise assumed
Magnitude Mean opposition magnitude: V0, or red magnitude, R
Geometric Albedo Geometric albedo

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