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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[1] 1737.5 ± 0.1[2] 3.344 ± 0.005 -12.74[3] 0.12[3]

Martian System
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Phobos 0.0007112 ± 0.0000010[4] 11.1 ± 0.15[5] 1.872 ± 0.076 11.4 ± 0.2[6] 0.071 ± 0.012[6]
Deimos 0.0000985 ± 0.0000024[4] 6.2 ± 0.18[5] 1.471 ± 0.166 12.45 ± 0.05[6] 0.068 ± 0.007[7]

Jovian System
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Io 5959.916 ± 0.012[8] 1821.6 ± 0.5[9] 3.528 ± 0.006 5.02 ± 0.03[14] 0.63 ± 0.02[16]
Europa 3202.739 ± 0.009[8] 1560.8 ± 0.5[10] 3.013 ± 0.005 5.29 ± 0.02[14] 0.67 ± 0.03[17]
Ganymede 9887.834 ± 0.017[8] 2631.2 ± 1.7[11] 1.942 ± 0.005 4.61 ± 0.03[14] 0.43 ± 0.02[18]
Callisto 7179.289 ± 0.013[8] 2410.3 ± 1.5[12] 1.834 ± 0.004 5.65 ± 0.10[14] 0.17 ± 0.02[18]
Amalthea 0.138 ± 0.030[8] 83.45 ± 2.4[13] 0.849 ± 0.199 14.1 ± 0.2[15] 0.090 ± 0.005[19]
Himalia 0.45  85[20] 2.6 14.2R[26] 0.04 
Elara 0.058  43[20] 2.6 16.0R[26] 0.04 
Pasiphae 0.020  30[20] 2.6 16.8R[26] 0.04 
Sinope 0.0050  19[20] 2.6 18.2R[26] 0.04 
Lysithea 0.0042  18[20] 2.6 18.1R[26] 0.04 
Carme 0.0088  23[20] 2.6 18.1R[26] 0.04 
Ananke 0.0020  14[20] 2.6 19.1R[26] 0.04 
Leda 0.00073  10[20] 2.6 19.2R[26] 0.04 
Thebe 0.10  49.3 ± 2.0[21] 3.0 16.0[22] 0.047 ± 0.003[19]
Adrastea 0.0005  8.2 ± 2.0[21] 3.0 18.7[22] 0.1 ± 0.045[21]
Metis 0.008  21.5 ± 2.0[21] 3.0 17.5[22] 0.061 ± 0.003[19]
Callirrhoe 0.000058  4.3[25] 2.6 20.8R[26] 0.04[25]
Themisto 0.000046  4.0[25] 2.6 21.0R[26] 0.04[25]
Megaclite 0.000014  2.7[25] 2.6 21.7R[26] 0.04[25]
Taygete 0.000011  2.5[25] 2.6 21.9R[26] 0.04[25]
Chaldene 0.000005  1.9[25] 2.6 22.5R[25] 0.04[25]
Harpalyke 0.000008  2.2[25] 2.6 22.2R[26] 0.04[25]
Kalyke 0.000013  2.6[25] 2.6 21.8R[26] 0.04[25]
Iocaste 0.000013  2.6[25] 2.6 21.8R[26] 0.04[25]
Erinome 0.000003  1.6[25] 2.6 22.8R[25] 0.04[25]
Isonoe 0.000005  1.9[25] 2.6 22.5R[25] 0.04[25]
Praxidike 0.000029  3.4[25] 2.6 21.2R[26] 0.04[25]
Autonoe 0.000006  2.0[25] 2.6 22.0R[25] 0.04[25]
Thyone 0.000006  2.0[25] 2.6 22.3R[25] 0.04[25]
Hermippe 0.000006  2.0[25] 2.6 22.1R[25] 0.04[25]
Aitne 0.000003  1.5[25] 2.6 22.7R[25] 0.04[25]
Eurydome 0.000003  1.5[25] 2.6 22.7R[25] 0.04[25]
Euanthe 0.000003  1.5[25] 2.6 22.8R[25] 0.04[25]
Euporie 0.000001  1.0[25] 2.6 23.1R[25] 0.04[25]
Orthosie 0.000001  1.0[25] 2.6 23.1R[25] 0.04[25]
Sponde 0.000001  1.0[25] 2.6 23.0R[25] 0.04[25]
Kale 0.000001  1.0[25] 2.6 23.0R[25] 0.04[25]
Pasithee 0.000001  1.0[25] 2.6 23.2R[25] 0.04[25]
Hegemone 0.000003  1.5[25] 2.6 22.8R[25] 0.04[25]
Mneme 0.000001  1.0[25] 2.6 23.3R[25] 0.04[25]
Aoede 0.000006  2.0[25] 2.6 22.5R[25] 0.04[25]
Thelxinoe 0.000001  1.0[25] 2.6 23.5R[25] 0.04[25]
Arche 0.000003  1.5[25] 2.6 22.8R[25] 0.04[25]
Kallichore 0.000001  1.0[25] 2.6 23.7R[25] 0.04[25]
Helike 0.000006  2.0[25] 2.6 22.6R[25] 0.04[25]
Carpo 0.000003  1.5[25] 2.6 23.0R[25] 0.04[25]
Eukelade 0.000006  2.0[25] 2.6 22.6R[25] 0.04[25]
Cyllene 0.000001  1.0[25] 2.6 23.2R[25] 0.04[25]
Kore 0.000001  1.0[25] 2.6 23.6R[25] 0.04[25]
Herse 0.000001  1.0[25] 2.6 23.4R[25] 0.04[25]
S/2003 J 2 0.000001  1.0[25] 2.6 23.2R[25] 0.04[25]
S/2003 J 3 0.000001  1.0[25] 2.6 23.4R[25] 0.04[25]
S/2003 J 4 0.000001  1.0[25] 2.6 23.0R[25] 0.04[25]
S/2003 J 5 0.000006  2.0[25] 2.6 22.4R[25] 0.04[25]
S/2003 J 9 0.0000001  0.5[25] 2.6 23.7R[25] 0.04[25]
S/2003 J 10 0.000001  1.0[25] 2.6 23.6R[25] 0.04[25]
S/2003 J 12 0.0000001  0.5[25] 2.6 23.9R[25] 0.04[25]
S/2003 J 15 0.000001  1.0[25] 2.6 23.5R[25] 0.04[25]
S/2003 J 16 0.000001  1.0[25] 2.6 23.3R[25] 0.04[25]
S/2003 J 18 0.000001  1.0[25] 2.6 23.4R[25] 0.04[25]
S/2003 J 19 0.000001  1.0[25] 2.6 23.7R[25] 0.04[25]
S/2003 J 23 0.000001  1.0[25] 2.6 23.6R[25] 0.04[25]

Saturnian System
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Mimas 2.5026 ± 0.0006[27] 198.20 ± 0.25[28] 1.150 ± 0.004 12.8[29] 0.962 ± 0.004[59]
Enceladus 7.2027 ± 0.0125[27] 252.10 ± 0.10[28] 1.608 ± 0.003 11.8[29] 1.375 ± 0.008[59]
Tethys 41.2067 ± 0.0038[27] 533.00 ± 0.70[28] 0.973 ± 0.004 10.2[29] 1.229 ± 0.005[59]
Dione 73.1146 ± 0.0015[27] 561.70 ± 0.45[28] 1.476 ± 0.004 10.4[29] 0.998 ± 0.004[59]
Rhea 153.9426 ± 0.0037[27] 764.30 ± 1.10[28] 1.233 ± 0.005 9.6[29] 0.949 ± 0.003[59]
Titan 8978.1382 ± 0.0020[27] 2574.73 ± 0.09[55] 1.882 ± 0.001 8.4[29] 0.2[29]
Hyperion 0.3727 ± 0.0012[27] 135.00 ± 4.00[54] 0.544 ± 0.050 14.4[29] 0.3[29]
Iapetus 120.5038 ± 0.0080[27] 735.60 ± 1.50[28] 1.083 ± 0.007 11[29] 0.6[29]
Phoebe 0.5532 ± 0.0006[27] 106.50 ± 0.70[54] 1.638 ± 0.033 16.4[34] 0.081 ± 0.002[30]
Janus 0.1263 ± 0.0087[54] 89.5 ± 1.5[54] 0.630 ± 0.030 14.4[29] 0.71 ± 0.02[59]
Epimetheus 0.0351 ± 0.0047[54] 58.1 ± 1.8[54] 0.640 ± 0.062 15.6[29] 0.73 ± 0.03[59]
Helene 0.00076  17.6 ± 0.4[54] 0.5 18.4[29] 1.67 ± 0.20[59]
Telesto 0.00027  12.4 ± 0.4[54] 0.5 18.5[29] 1.0[29]
Calypso 0.00017  10.7 ± 0.7[54] 0.5 18.7[29] 1.34 ± 0.10[59]
Atlas 0.00044 ± 0.00015[54] 15.1 ± 1.2[54] 0.460 ± 0.110 19.0[29] 0.4[29]
Prometheus 0.01074 ± 0.00285[54] 43.1 ± 2.7[54] 0.480 ± 0.090 15.8[29] 0.6[29]
Pandora 0.00924 ± 0.00152[54] 40.7 ± 1.5[54] 0.490 ± 0.060 16.4[29] 0.5[29]
Pan 0.00033 ± 0.00015[54] 14.1 ± 1.3[54] 0.420 ± 0.150 19.4[32] 0.5[32]
Methone 0.0000006  1.6 ± 0.6[54] 0.5 ?  ? 
Pallene 0.0000022  2.5 ± 0.6[54] 0.5 ?  ? 
Polydeuces 0.0000003  1.3 ± 0.4[54] 0.5 ?  ? 
Daphnis 0.0000052 ± 0.0000052[54] 3.8 ± 0.8[54] 0.340 ± 0.260 ?  ? 
Anthe 0.0000001  0.9[57] 0.5 ?  ? 
Aegaeon 0.000000004  0.3[56] 0.5 ?  ? 
Ymir 0.00033  9[33] 2.3 21.9R[34] 0.06[33]
Paaliaq 0.00055  11.0[33] 2.3 21.1R[34] 0.06[33]
Tarvos 0.00018  7.5[33] 2.3 22.7R[34] 0.06[33]
Ijiraq 0.000080  6[33] 2.3 22.6R[35] 0.06[33]
Suttungr 0.000014  3.5[33] 2.3 23.9R[35] 0.06[33]
Kiviuq 0.00022  8[33] 2.3 22.1R[34] 0.06[33]
Mundilfari 0.000014  3.5[33] 2.3 23.8R[35] 0.06[33]
Albiorix 0.0014  16[33] 2.3 20.5R[34] 0.06[33]
Skathi 0.000021  4[33] 2.3 23.6R[35] 0.06[33]
Erriapus 0.000051  5[33] 2.3 23.4R[34] 0.06[33]
Siarnaq 0.0026  20[33] 2.3 19.9R[34] 0.06[33]
Thrymr 0.000014  3.5[33] 2.3 23.9R[35] 0.06[33]
Narvi 0.000023  3.5[35] 2.3 23.8R[35] 0.04[35]
Aegir 0.000000  3.0[35] 2.3 24.4R[35] 0.04[35]
Bebhionn 0.000000  3.0[35] 2.3 24.1R[35] 0.04[35]
Bergelmir 0.000000  3.0[35] 2.3 24.2R[35] 0.04[35]
Bestla 0.000000  3.5[35] 2.3 23.8R[35] 0.04[35]
Farbauti 0.000000  2.5[35] 2.3 24.7R[35] 0.04[35]
Fenrir 0.000000  2.0[35] 2.3 25.0R[35] 0.04[35]
Fornjot 0.000000  3.0[35] 2.3 24.6R[35] 0.04[35]
Hati 0.000000  3.0[35] 2.3 24.4R[35] 0.04[35]
Hyrrokkin 0.000000  3.0[35] 2.3 23.5R[35] 0.04[35]
Kari 0.000000  3.0[35] 2.3 23.9R[35] 0.04[35]
Loge 0.000000  3.0[35] 2.3 24.6R[35] 0.04[35]
Skoll 0.000000  3.0[35] 2.3 24.5R[35] 0.04[35]
Surtur 0.000000  3.0[35] 2.3 24.8R[35] 0.04[35]
Jarnsaxs 0.000000  3.0[35] 2.3 24.7R[35] 0.04[35]
Greip 0.000000  3.0[35] 2.3 24.4R[35] 0.04[35]
Tarqeq 0.000000  3.0[35] 2.3 23.9R[35] 0.04[35]
S/2004 S 7 0.000000  3.0[35] 2.3 24.5R[35] 0.04[35]
S/2004 S 12 0.000000  2.5[35] 2.3 24.8R[35] 0.04[35]
S/2004 S 13 0.000000  3.0[35] 2.3 24.5R[35] 0.04[35]
S/2004 S 17 0.000000  2.0[35] 2.3 25.2R[35] 0.04[35]
S/2006 S 1 0.000000  3.0[35] 2.3 24.6R[35] 0.04[35]
S/2006 S 3 0.000000  2.5[35] 2.3 24.6R[35] 0.04[35]
S/2007 S 2 0.000000  3.0[35] 2.3 24.4R[35] 0.04[35]
S/2007 S 3 0.000000  2.0[35] 2.3 24.9R[35] 0.04[35]

Uranian Satellites
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Ariel 86.4 ± 5.0[36] 578.9 ± 0.6[37] 1.592 ± 0.092 13.70 ± 0.04[38] 0.39 ± 0.04[39]
Umbriel 81.5 ± 5.0[36] 584.7 ± 2.8[37] 1.459 ± 0.092 14.47 ± 0.04[38] 0.21 ± 0.02[39]
Titania 228.2 ± 5.0[36] 788.9 ± 1.8[37] 1.662 ± 0.038 13.49 ± 0.04[38] 0.27 ± 0.03[39]
Oberon 192.4 ± 7.0[36] 761.4 ± 2.6[37] 1.559 ± 0.059 13.70 ± 0.04[38] 0.23 ± 0.03[39]
Miranda 4.4 ± 0.4[36] 235.8 ± 0.7[37] 1.214 ± 0.109 15.79 ± 0.04[38] 0.32 ± 0.03[39]
Cordelia 0.0030  20.1 ± 3.[40] 1.3 23.62 ± 0.35[38] 0.07[38]
Ophelia 0.0036  21.4 ± 4.[40] 1.3 23.26 ± 0.25[38] 0.07[38]
Bianca 0.0062  25.7 ± 2.[40] 1.3 22.52 ± 0.24[38] 0.07[38]
Cressida 0.0229  39.8 ± 2.[40] 1.3 21.58 ± 0.11[38] 0.07[38]
Desdemona 0.0119  32.0 ± 4.[40] 1.3 21.99 ± 0.16[38] 0.07[38]
Juliet 0.0372  46.8 ± 4.[40] 1.3 21.12 ± 0.05[38] 0.07[38]
Portia 0.1122  67.6 ± 4.[40] 1.3 20.42 ± 0.05[38] 0.07[38]
Rosalind 0.0170  36. ± 6.[40] 1.3 21.79 ± 0.13[38] 0.07[38]
Belinda 0.0238  40.3 ± 8.[40] 1.3 21.47 ± 0.09[38] 0.07[38]
Puck 0.1931  81. ± 2.[41] 1.3 19.75 ± 0.05[38] 0.07[38]
Caliban 0.020  36[42] 1.5 22.4R[42] 0.04[42]
Sycorax 0.18  75[42] 1.5 20.8R[42] 0.04[42]
Prospero 0.0066  25[42] 1.5 23.2R[42] 0.04[42]
Setebos 0.0058  24[42] 1.5 23.3R[42] 0.04[42]
Stephano 0.0017  16[42] 1.5 24.1R[42] 0.04[42]
Trinculo 0.00031  9[42] 1.5 25.4R[42] 0.04[42]
Francisco 0.00056  11[42] 1.5 25.0R[42] 0.04[42]
Margaret 0.00042  10[42] 1.5 25.2R[42] 0.04[42]
Ferdinand 0.00042  10[42] 1.5 25.1R[42] 0.04[42]

Neptunian Satellites
Sat. GM
(km3/sec2)		 Mean radius
(km)		 Mean density
(g/cm3)		 Magnitude
V0 or R		 Geometric
Albedo
Triton 1427.6 ± 1.9[43] 1353.4 ± 0.9[44] 2.059 ± 0.005 13.54[46] 0.719[46]
Nereid 2.06  170. ± 25.[47] 1.5 19.2R[48] 0.155[47]
Naiad 0.013  33. ± 3.[48] 1.3 23.91[48] 0.072[48]
Thalassa 0.025  41. ± 3.[48] 1.3 23.32[48] 0.091[48]
Despina 0.14  75. ± 3.[48] 1.3 22.00[48] 0.090[48]
Galatea 0.25  88. ± 4.[48] 1.3 21.85[48] 0.079[48]
Larissa 0.33  97. ± 3.[48] 1.3 21.49[48] 0.091[48]
Proteus 3.36  210. ± 7.[48] 1.3 19.75[48] 0.096[48]
Halimede 0.006  31.0[49] 1.5 24.5R[49] 0.04[49]
Psamathe 0.001  20.0[49] 1.5 25.5R[49] 0.04[49]
Sao 0.006  22.0[49] 1.5 25.5R[49] 0.04[49]
Laomedeia 0.006  21.0[49] 1.5 25.5R[49] 0.04[49]
Neso 0.011  30.0[49] 1.5 24.6R[49] 0.04[49]

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[50] 603.6 ± 1.4[51] 1.678 ± 0.151 17.26 ± 0.01[52] 0.372 ± 0.012[52]
Nix 0.011 ± 0.011[50] 44.0 ± 5.0[53] 0.5 ± 0.5 23.41 ± 0.15[58] 0.08[53]
Hydra 0.066 ± 0.066[50] 36.0 ± 5.0[53] 5.0 ± 5.0 22.96 ± 0.15[58] 0.18[53]

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

References

1. Standish, E. M. 1998. JPL Planetary and Lunar Ephemerides, DE405/LE405.
2. Bills, B.G. and Ferrari, A.J. 1977. ``A Harmonic Analysis of Lunar Topography'', Icarus 31, 244-259.
3. Explanatory Supplement to the Astronomical Almanac 1992. (P. K. Seidelmann Ed.) University Science Books, Mill Valley, CA.
4. Jacobson, R. A. 2010. ``The Orbits and Masses of the Martian Satellites and the Libration of Phobos'', AJ 139, 668-679.
5. Thomas, P.C. 1989b. ``Shapes of Small Satellites'', Icarus 77, 248-274.
6. Zellner, B., and Capen, R. C. 1974. ``Photometric Properties of the Martian Satellites'', Icarus 23, 437-444.
7. Thomas, P. C., Adinolfi, D., Helfenstein, P., Simonelli, D. and Veverka, J. 1996. ``The Surface of Deimos: Contribution of Materials and Processes to Its Unique Appearance'', Icarus 123, 536-556.
8. Jacobson, R. A. 2003b. private communication of constants used in the JUP230 ephemeris
9. Thomas, P. C., Davies, M. E., Colvin, T. R., Oberst, J., Schuster, P., Neukum, G., Carr, M. H., McEwen, A., Schubert, G., Belton, M. J. S., and the Galileo Imaging Team 1998, ``The Shape of Io from Galileo Limb Measurements'', Icarus 135, 175-180.
10. Thomas, P.C. 2002. private communication of limb fit results
11. Anderson, J. D., Jacobson, R. A., Lau, E. L., Moore, W. B., Olsen, O., Schubert, G., and Thomas, P. C. 2000. ``Shape, Mean Radius, Gravity Field and Interior Structure of Ganymede'', Bulletin of the American Astronomical Society 33(3), 1101.
12. Anderson, J.D., Jacobson, R.A., McElrath, T. P., Schubert,G., Moore, W.B., and Thomas, P. C. 2000a. ``Shape, Mean Radius, Gravity Field and Interior Structure of Callisto'', Icarus 153, 157-161.
13. Thomas, P.C. 2002. private communication of Amalthea volume based on its shape model
14. Morrison, D., N. D. Morrison, and Lazarewicz, A. R. 1974. ``Four color photometry of the Galilean satellites'', Icarus 23, 399-416.
15. Thomas, P. and Veverka, J. 1982. ``Amalthea'', In Satellites of Jupiter (D. Morrison Eds.) pp. 147-173. Univ. of Arizona Press, Tucson.
16. Simonelli, D. P. and Veverka, J. 1984. ``Voyager Disk-Integrated Photometry of Io'', Icarus 59, 406-425.
17. Buratti, B. and Veverka, J. 1983. ``Voyager Photometry of Europa'', Icarus 55, 93-110. (average of leading and trailing hemisphere values)
18. Morrison, D. and Morrison, N. D. 1977. ``Photometry of the Galilean Satellites'', In Planetary Satellites (J. A. Burns, Ed.) pp. 363-378. Univ. of Arizona Press, Tucson.
19. Simonelli, D. P., Rossier, L., Thomas, P. C., Veverka, J., Burns, J. A., and Belton, M. J. S. 2000. ``Leading/Trailing Albedo Asymmetries of Thebe, Amalthea, and Metis'', Icarus 147, 353-365.
20. Rettig, T. W. and Walsh, K. W. 2001. ``Implied Evolutionary Differences of the Jovian Irregular Satellites from a BVR Color Survey'', presented at Jupiter: Planet, Satellites, and Magnetosphere, Boulder Colorado
21. Thomas, P. C., Burns, J. A., Rossier, L., Simonelli, D., Veverka, J., Chapman, C. R., Klaasen, K., Johnson, T. V., and Belton, M. J. S. 1998. ``The Small Inner Satellites of Jupiter'', Icarus 135, 360-371.
22. Veverka, J., Thomas, P., and Synnott, S. 1982. ``The Inner Satellites of Jupiter'', Vistas in Astronomy 25, 245-262.
23. Gladman, B. J. 2000. IAU Circular 7472
24. Jewitt, D. C. 2001. personal communication
25. Sheppard, S. S. 2010. http://www.dtm.ciw.edu/users/sheppard/satellites/jupsatdata.html
26. Rettig, T. W., Walsh, K., and Consolmagno, G. 2001. ``Implied Evolutionary Differences of the Jovian Irregular Satellites from a BVR Color Survey'', Icarus 154, 313-320.
27. Jacobson, R. A., Antreasian, P. G., Ardalan, S., Criddle, K. E., Ionasescu, R., Jones, J. B., Parcher, D., Pelletier, F. J., Roth, D. C., Thompson, P., Vaughan, A. 2008. ``The Gravity Gield of the Saturnian System and the Orbits of the Major Saturnian satellites'', Presented at the Saturn After Cassini-Huygens Symposium held at Imperial College London, UK
28. Thomas, P. C., Burns, J. A., Helfenstein, P., Squyres, S., Veverka, J., Porco, C., Turtle, E. P., McEwen, A., Denk, T., Giese, B., Roatsch, T., Johnson, T. V., Jacobson, R. A. 2007. ``Shapes of the Saturnian icy satellites and their significance'', Icarus 190, 573-584.
29. Morrison, D., Johnson, T. V., Shoemaker, E. M., Soderbloom, L. A., Thomas, P., Veverka, J., and Smith, B. A. 1984. ``Satellites of Saturn: Geological Perspective'', In Saturn (T. Gehrels and M. S. Matthews Eds.) pp. 609-639. Univ. of Arizona Press, Tucson.
30. Simonelli, D. P., Kay, J., Adinolfi, D., Veverka, J., Thomas, P. C., and Helfenstein, P. 1999. ``Phoebe: Albedo Map and Photometric Properties'', Icarus 138, 249-258.
31. Jacobson, R. A., Spitale, J., Porco, C. C., Beurle, K., Cooper, N. J., Evans, M. W., Murray, C. D. 2008. ``Revised Orbits of Saturn's Small Inner Satellites'', AJ 135, 261-263.
32. Porco, C. C., Weiss, J. W. , Thomas, P. C., Richardson, D. C., Jacobson, R. A., Spitale, J. 2006. ``Physical Characteristics and Possible Accretionary Origins for Saturn's Small Satellites'', Presented at the 37th Lunar and Planetary Science Conference, League City, TX
33. Nicholson, P. D. 2001. private communication
34. Grav, T., Holman, M. J., Gladman, B. J., and Aksnes, K. 2003. ``Photometric survey of the irregular satellites'', Icarus 166, 33-45.
35. Sheppard, S. S. 2010. http://www.dtm.ciw.edu/users/sheppard/satellites/satsatdata.html
36. Jacobson, R. A. 2007. ``The Gravity Field of the Uranian System and the Orbits of the Uranian Satellites and Rings'', BAAS 39, 453.
37. Thomas, P.C. 1988. ``Radii, shapes, and topography of the satellites of Uranus from limb coordinates'', Icarus 73, 427-441.
38. Karkoschka, E. 2001a. ``Comprehensive Phometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope'', Icarus 151, 51-68.
39. Veverka, J., Brown, R. H., and Bell, J. F. 1991. ``Uranus Satellites: Surface Properties'', In Uranus (J. T. Bergstralh, E. D. Miner, and M. S. Matthews Eds.) pp. 528-560. Univ. of Arizona Press, Tucson.
40. Karkoschka, E. 2001b. ``Voyager's Eleventh Discovery of a Satellite of Uranus and Phometry and the First Size Measurements of Nine Satellites'', Icarus 151, 69-77
41. Thomas, P.C., Weitz, C., and Veverka, J. 1989a. ``Small satellites of Uranus Disk-integrated photometry and estimated radii'', Icarus 81, 92-101.
42. Sheppard, S. S., Jewitt, D., Kleyna, J. 2005. ``An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness'', Astronomical Journal 129, 518-525.
43. Jacobson, R. A. 2009. ``The Orbits of the Neptunian Satellites and the Orientation of the Pole of Neptune'', AJ137, 4322.
44. Thomas, P. C. 2000. ``The Shape of Triton from Limb Profiles'', Icarus 148, 587-588.
45. Jacobson, R. A. 2008. ``Reconstruction of the Voyager~2 Neptune Encounter in the ICRF System'', AIAA Paper~2008-7372 presented at the AIAA/AAS Astrodynamics Specialist Conference, Honolulu, HI
46. Hicks, M. D, and Buratti, B. J. 2004. ''The spectral variability of Triton from 1997--2000', Icarus 171, 210-218.
47. Thomas, P., Veverka, J., and Helfenstein, P. 1991b. ``Voyager Observations of Nereid'', Journal of Geophysical Research 96(19), 253-19, 259.
48. Karkoschka, E. 2003. ``Sizes, shapes, and albedos of the inner satellites of Neptune'', Icarus 162, 400-407
49. Sheppard, S. S., Jewitt, D., and Kleyna, J. 2006. ``A Survey for Normal Irregular Satellites around Neptune: Limits to Completeness'', Astronomical Journal 132, 171-176.
50. Jacobson, R. A. 2007. private communication of constants used in the PLU017 ephemeris
51. Sicardy, B., et al. 2006. ``Charon's size and an upper limit on its atmosphere from a stellar occultation'', Nature 439, 52-54.
52. Reinsch, K., Burwitz, V., and Festou, M. C. 1994. ``Albedo Maps of Pluto and Improved Physical Parameters of the Pluto-Charon System'', Icarus 108, 209-218.
53. Tholen, D.~J., Buie, M.~W., Grundy, W.~M., Elliott, G.~T. 2008. ``Masses of Nix and Hydra'', AJ 135, 777-784.
54. Thomas, P. C. 2010. ``Sizes, shapes, and derived properties of the saturnian satellites after the Cassini nominal mission'', Icarus 208, 395-401.
55. Zebker, H. A. and Stiles, B. and Hensley, S. Lorenz, R. and Kirk, R. L. and Lunine, J. 2009. ``Size and Shape of Saturn's Moon Titan'', Science 324, 921-923.
56. Hedman, M. M., Cooper, N. J., Murray, C. D., Beurle, K., Evans, M. W., Tiscareno, M. S., and Burns, J. A. 2010. ``Aegaeon (Saturn LIII), a G-ring object'', Icarus 207, 433-447.
57. Cooper, N. J., Murray, C. D., Evans, M. W., Beurle, K., Jacobson, R. A., and Porco, C. C. 2008. ``Astrometry and dynamics of Anthe (S/2007 S4), a new satellite of Saturn'', Icarus 195, 765-777.
58. Weaver, H. A., et al. 2005. IAU Circular 8625
59. Verbiscer, A., French, R., Showalter, M., and Helfenstein, P. 2007. ``Enceladus: Cosmic Graffiti Artist Caught in the Act'', Science 315, 815.
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