Satellites of the planets

Planets
Name of satellite
Average distance from planet (km)
Sidereal period (days)
Inclination to planet's orbit (degrees)
Orbital eccentricity
Diameter (km)
Mass (kg)
Mars Phobos 9.38 0.31891 1.0 0.018 14 X 10* 9.6 X 1015
Deimos 23.5 1.26244 2.0 0.002 8 X 6* 2.0 X 1015
Jupiter Metis 128.2 0.294 0** 0** 40** Not known
Adrastea 128.5 0.297 0** 0** 30** Not known
Amatthea 181.3 0.489 0.455 0.003 240 Not known
Thebe 223 0.675 0** 0** 80** Not known
Io 412.6 1.769 0.027 0.000 3,632 8.916 X 1022
Europa 670.9 3.551 0.468 0.000 3,126 4.873 X 1022
Ganymede 1,070 7.155 0.183 0.001 5,276 1,490 X 1023
Callisto 1,880 16,689 0.253 0.007 4,820 1.490 X 1023
Leda 11,110 240 27 0.147 2-14 Not known
Himalia 11,470 250.6 28 0.158 170 Not known
Lysithea 11,710 260 29 0.12 6-32 Not known
Elara 11,740 260.1 26 0.207 80 Not known
Ananke 20,700 617 147 0.169 6-28 Not known
Carme 22,350 692 163 0.207 8-40 Not known
Pasiphae 23,300 735 147 0.40 8-46 Not known
Sinope 23,700 758 156 0.275 6-36 Not known
Saturn 1980 S28 137.67 0.602 0** 0** 20 X 10* Not known
1980 S27 139.35 0.613 0** 0** 70 X 40* Not known
1980 S26 141.7 0.629 0** 0** 55 X 35* Not known
1980 S3 151.422 0.694 0** 0** 70 X 50* Not known
1980 S1 151.472 0.695 0** 0** 110 X 80* Not known
Mimas 185.54 0.942 1.517 0.020 392 4.5 X 1019**
Enceladus 238.04 1.370 0.023 0.004 500 8.4 X 1019
Tethys 294.67 1.888 1.093 0.000 1,000 7.55 X 1020
1980 S13 294.67 1.888 1.0** 0** 17 X 13* Not known
1980 S25 294.67 1.888 1.0** 0** 17 X 11* Not known
Dione 377.42 2.737 0.023 0.002 1,120 1.05 X 1021
1980 S6 378.06 2.739 0** 0** 18 X 15* Not known
Rhea 527.1 4.518 0.35 0.001 1,530 2.49 X 1021
Titan 1,221.86 15.945 0.00 0.029 5,150 1.35 X 1023
Hyperion 1,481 21.277 0.4 0.104 205 X 110* Not known
Iapetus 3,560.8 79.311 14.7 0.028 1,460 1.88 X 1021
Phoebe 12,954 550.4 150 0.163 220 Not known
Uranus Miranda 130 1,414 3.4 0.000 320** 202 X 1019**
Ariel 192 2.520 0 0.003 1,330 1.6 X 1021**
Umbriel 267 4.144 0 0.004 1,110 9.3 X 1020**
Titania 438 8.706 0 0.002 1,600 2.8 X 1021**
Oberon 587 13.463 0 0.001 1,630 2.9 X 1021**
Neptune Triton 355 5.877 160 0.00 3,200** 3.4 X 1022
Nereid 5,562 365.21 28 0.75 300** 2.8 X 1019**
Pluto Charon 19.7 6.387 94 0.0 1,500** 1.6 X 1021**

*These are not diameters; the satellites are elongated and the values give their two dimensions.

**Values uncertain.

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