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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

References

1. 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.
2. Campbell, J.K. and Anderson, J.D. 1989. ``Gravity Field of the Saturnian System from Pioneer and Voyager Tracking Data'', Astronomical Journal 97, 1485.
3. Bills, B.G. and Ferrari, A.J. 1977. ``A Harmonic Analysis of Lunar Topography'', Icarus 31, 244-259.
4. Davies, M.E., and Katayama, F.R. 1983a. ``The Control Networks of Tethys and Dione'', Journal of Geophysical Research 88, 8729-8735.
5. Davies, M.E., and Katayama, F.R. 1983b. ``The Control Network of Rhea'', Icarus 56, 603-610.
6. Davies, M.E., and Katayama, F.R. 1984. ``The Control Network of Iapetus'', Icarus 59, 199-204.
7. Davies, M.E., Rodgers, P.G., and Colvin, T.R. 1991. ``A Control Network of Triton'', Journal of Geophysical Research 96(E1, 15), 675-15, 681.
8. Thomas, P.C. 2002. private communication of limb fit results
9. Dermott, S.F. and Thomas, P.C. 1988. ``The Shape and Internal Structure of Mimas'', Icarus 73, 25-65.
10. Dermott, S.F. and Thomas, P.C. 1994. ``The Determination of the Mass and Mean Density of Enceladus from Its Observed Shape'', Icarus 109, 241-257.
11. Gladman, B. J., Nicholson, P. D., Burns, J. A., Kavelaars, J. J., Marsden, B. G., Williams, G. V., and Offutt, W. B. 1998, ``Discovery of two distant irregular moons of Uranus'', Nature 392, 897-899.
12. Gladman, B. J. 2000. personal communication
13. Gladman, B. J. 2000. IAU Circular 7472
14. Jacobson, R.A., Riedel, J.E. and Taylor, A.H. 1991. ``The orbits of Triton and Nereid from spacecraft and Earthbased observations'', Astronomy and Astrophysics 247, 565.
15. Goguen, J. D., Hammel, H. B., Brown, R. H. 1989. ''Photometry of Titania, Oberon, and Triton'', Icarus 77, 237-247.
16. Jacobson, R.A., Campbell, J.K., Taylor, A.H. and Synnott, S.P. 1992. ``The masses of Uranus and its Major Satellites from Voyager Tracking Data and Earth-based Uranian Satellite Data,'' Astronomical Journal 103, 2068.
17. Jacobson, R.A. 1996. ``Orbits of the Saturnian Satellites from Earthbased and Voyager Observations'', Bulletin of the American Astronomical Society 28(3), 1185.
18. Jacobson, R.A. 2001. ``Gravity Field of the Jovian System and the Orbits of the Regular Jovian Satellites'', Bulletin of the American Astronomical Society 33(3), 1039.
19. Jewitt, D. C. 2001. personal communication
20. Karkoschka, E. 2001a. ``Comprehensive Phometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope'', Icarus 151, 51-68.
21. 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
22. Kozai, Y. 1957. ``On the Astronomical Constants of Saturnian Satellites System'', Annals of the Tokyo Astronomical Observatory: 2nd Series 5, 73.
23. Kulyk, I., Jockers, K., Karpov, N., and Sergeev, A. 2001. ``Near-infrared ground-based photometric observations of the inner Jovian satellites Thebe, Amalthea, and Metis'', presented at Jupiter: Planet, Satellites, and Magnetosphere, Boulder Colorado
24. Lindal, G.F., Wood, G.E., Hotz, H.B., Sweetnam, D.N., Eshleman, V.R., and Tyler, G.L. 1983. ``The Atmosphere of Titan An Analysis of the Voyager 1 Radio Occultation Measurements'', Icarus 53, 348-363.
25. Marcialis, R. L., Lebofsky, L. A., DiSanti, M. A., Fink, U. 1992. ``The Albedos of Pluto and Charon: Wavelength Dependence'', Astronomical Journal 103, 1389-1394.
26. Morrison, D., N. D. Morrison, and Lazarewicz, A. R. 1974. ``Four color photometry of the Galilean satellites'', Icarus 23, 399-416.
27. 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.
28. Nicholson, P. D. 2001. private communication
29. Null, G.W., and Owen, W.M. 1996. ``Charon/Pluto Mass Ratio Obtained with HST CCD Observations in 1991 and 1993'', Astronomical Journal 111, 1368.
30. 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.
31. 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
32. Showalter, M.R. 1991. ``Visual Detection of 1981 S13, Saturn's Eighteenth Satellite, and its Role in the Encke Gap'', Nature 351, 709-713.
33. Thomas, P. C. 2000. ``The Shape of Triton from Limb Profiles'', Icarus 148, 587-588.
34. Tholen, D.J. and Buie, M.W. 1990. ``Further Analysis of Pluto-Charon Mutual Event Observations-1990'', Bulletin of the American Astronomical Society 22, 1129.
35. Thomas, P. and Veverka, J. 1982. ``Amalthea'', In Satellites of Jupiter (D. Morrison Eds.) pp. 147-173. Univ. of Arizona Press, Tucson.
36. Thomas, P. C., Veverka, J., Morrison, D., Davies, M., and Johnson, T.V. 1983a. ``Phoebe Voyager 2 Observations'', Journal of Geophysical Research 88, 8736-8742.
37. Thomas, P. C., Veverka, J., Morrison, D., Davies, M., and Johnson, T.V. 1983b. ``Saturn's Small Satellites Voyager Imaging Results'', Journal of Geophysical Research 88, 8743-8754.
38. Thomas, P. C., Black, G. J., and Nicholson, P. D. 1995. ``Hyperion: Rotation, Shape, and Geology from Voyager Images'', Icarus 117, 128-148.
39. Thomas, P.C. 1988. ``Radii, shapes, and topography of the satellites of Uranus from limb coordinates'', Icarus 73, 427-441.
40. Thomas, P.C., Weitz, C., and Veverka, J. 1989a. ``Small satellites of Uranus Disk-integrated photometry and estimated radii'', Icarus 81, 92-101.
41. Thomas, P.C. 1989b. ``Shapes of Small Satellites'', Icarus 77, 248-274.
42. Thomas, P.C. and Dermott, S.F. 1991a. ``The Shape of Tethys'', Icarus 94, 391-398.
43. Thomas, P., Veverka, J., and Helfenstein, P. 1991b. ``Voyager Observations of Nereid'', Journal of Geophysical Research 96(19), 253-19, 259.
44. Thomas, P. and Veverka, J. 1991c.``Neptune's Small Inner Satellites'', Journal of Geophysical Research 96(19), 261-19, 268.
45. 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.
46. Veverka, J. and Burns, J. A. 1980. ``The Moons of Mars'', Annual Review of Earth and Planetary Sciences 8, 527-558.
47. Veverka, J., Thomas, P., and Synnott, S. 1982. ``The Inner Satellites of Jupiter'', Vistas in Astronomy 25, 245-262.
48. 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.
49. Konopliv, A. S., Yoder, C. F., Standish, E. M., Yuan, D., Sjogren, W. L., 2006. ``A global solution for the Mars static and seasonal gravity, Mars orientation, Phobos and Deimos masses, and Mars ephemeris'', Icarus 182, 23--50.
50. Zellner, B., and Capen, R. C. 1974. ``Photometric Properties of the Martian Satellites'', Icarus 23, 437-444.
51. Standish, E. M. 1998. JPL Planetary and Lunar Ephemerides, DE405/LE405.
52. Explanatory Supplement to the Astronomical Almanac 1992. (P. K. Seidelmann Ed.) University Science Books, Mill Valley, CA.
53. 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.
54. 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.
55. 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.
56. Simonelli, D. P., Wisz, M., Switala, A., Adinolfi, D., Veverka, J., Thomas, P. C., and Helfenstein, P. 1998. ``Photometric Properties of Phobos Surface Materials from Viking Images'', Icarus 131, 52-77.
57. 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.
58. 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.
59. Maris, M., Carraro, G., Cremonese, G., and Fulle, M. 2001. ``Multicolor Photometry of the Uranus Irregular Satellites Sycorax and Caliban'', Astronomical Journal 121, 2800-2803.
60. Lindal, G. F., Wood, G. E., Levy, G. S., Anderson, J. D., Sweetnam, D. N., Hotz, H. B., Buckles, B. J., Holmes, D. R., Doms, P. E., Eshleman, V. R., Tyler, G. L., and Craft, T. A. 1981. ``The Atmosphere of Jupiter: An Analysis of the Voyager Radio Occultation Measurements'', Journal of Geophysical Research 86, A10, 8721-8727.
61. Sheppard, S. S. 2003. http://www.ifa.hawaii.edu/~sheppard/satellites/jupsatdata.html
62. Holman, M. 2002. IAU Circular 7980
63. Holman, M. 2003. ``Press Release No. 03-03'', Harvard-Smithsonian Center for Astrophysics http://cfa-www.harvard.edu/press/pr0303.html
64. Sheppard, S. S. 2003. private communication
65. Jacobson, R. A. 2003a. ``The Gravity Field of the Saturnian System'', presented at the 34th Annual Meeting of the American Astronomical Society Division on Dynamical Astronomy, Ithaca, New York.
66. Thomas, P.C. 2002. private communication of Amalthea volume based on its shape model
67. Jacobson, R. A. 2003b. private communication of constants used in the JUP230 ephemeris
68. 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.
69. Buratti, B. and Veverka, J. 1983. ``Voyager Photometry of Europa'', Icarus 55, 93-110. (average of leading and trailing hemisphere values)
70. Simonelli, D. P. and Veverka, J. 1984. ``Voyager Disk-Integrated Photometry of Io'', Icarus 59, 406-425.
71. Karkoschka, E. 2003. ``Sizes, shapes, and albedos of the inner satellites of Neptune'', Icarus 162, 400-407
72. 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.
73. Sheppard, S. S., Jewitt, D., Kleyna, J. 2005. ``An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness'', Astronomical Journal 129, 518-525.
74. Jacobson, R. A. 2004. ``The orbits of the major Saturnian satellites and the gravity field of Saturn from spacecraft and Earthbased observations'', Astronomical Journal 128, 492-501.
75. Jacobson, R. A. and French, R. G. 2004. ``Orbits and Masses of Saturn's Coorbital and F-ring Shepherding Satellites'',Icarus in press
76. Jacobson, R.A. et al. 2004. ``The Orbits of the Major Saturnian Satellites and the Gravity Field of the Saturnian System'', Bulletin of the American Astronomical Society 36(3), 1097.
77. Thomas, P.C. 2004. private communication of satellite radii based on Cassini imaging
78. Thomas, P.C. 2004. private communication of revised satellite radii based on Voyager imaging
79. Porco, C. C. et al. 2005. ``Cassini Imaging Science: Initial Results on Saturn's Rings and Small Satellites'',Science 307, 1226-1236.
80. Jacobson, R. A., Antreasian, P. G., Bordi, J. J., Criddle, K. E., Ionasescu, R., Jones, J. B., Mackenzie, R. A., Pelletier, F. J., Owen Jr., W. M., Roth, D. C., and Stauch, J. R. 2005. ``The gravity field of the Saturnian system and the orbits of the major Saturnian satellites'', BAAS 37, 729.
81. 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.
82. Jacobson, R. A. 2008. ``The Orbits of the Martian Satellites'', BAAS 40, 481.
83. 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
84. 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
85. 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.
86. Jacobson, R. A. 2007. ``The Gravity Field of the Uranian System and the Orbits of the Uranian Satellites and Rings'', BAAS 39, 453.
87. 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
88. Sicardy, B., et al. 2006. ``Charon's size and an upper limit on its atmosphere from a stellar occultation'', Nature 439, 52-54.
89. Tholen, D.~J., Buie, M.~W., Grundy, W.~M., Elliott, G.~T. 2008. ``Masses of Nix and Hydra'', AJ 135, 777-784.
90. Weaver, H. A., et al. 2005. IAU Circular 8625
91. Jacobson, R. A. 2007. private communication of constants used in the PLU017 ephemeris
92. Jacobson, R. A. 2009. ``The Orbits of the Neptunian Satellites and the Orientation of the Pole of Neptune'', AJ137, 4322.
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