Library - The Natural Satellites of the Planets of Sol
Year of
discovery		 Magnitude Mean distance
from planet		 Sidereal
rotation period		 Orbital
inclination		 Orbital
eccentricity		 Equitorial
radius		 Mass Mean
density
- (VO) (km) - (degrees) - (km) (grams) (g cm-3)
Earth Luna none -12.7 386,569 27.322 days 18.3 to 28.6 0.05 1738 7.35 ×1025 3.34
Mars Phobos 1877 11.3 9,379 7.66 hours 1 0.01 14 × 10 1.08 ×1019 2
  Demios 1877 12.4 23,459 30.31 hours 0.9 to 2.7 0 8 × 6 1.8 ×1018 1.7
Jupiter Metis 1979 17.5 127,960 7.08 hours 0† 0 20†
  Adrastea 1979 18.7 128,980 7.152 hours 0† 0† 12 × 8
  Amalthea 1892 14.1 181,300 11.95 hours 0.4 0 135 × 75
  Thebe 1979 16 221,900 16.2 hours 0.8† 0.01 50†
  Io 1610 5 421,956 4.06 hours
(OP: 42.48 hours)		 0.04 0 1815 8.94 ×1025 3.57
  Europa 1610 5.3 671,038 3.551 days 0.47 0.01 1569 4.8 ×1025 1.94
  Ganymede 1610 4.6 1,070,000 7.155 days 0.19 0 2631 1.48 ×1026 1.94
  Callisto 1610 5.6 1,883,000 16.689 days 0.28 0.01 2400 1.08 ×1026 1.86
  Leda 1974 20.2 11,094,000 238.72 days 27 0.15 8†
  Himalia 1904 15 11,480,000 250.57 days 28 0.16 90†
  Lysithea 1938 18.2 11,720,000 259.22 days 29 0.11 20†
  Elara 1905 16.6 11,737,000 259.65 days 28 0.21 40†
  Ananke 1951 18.9 21,200,000 631 days retro 147 0.17 15†
  Carme 1938 17.9 22,600,000 692 days retro 163 0.21 22†
  Pasiphæ 1908 16.9 23,500,000 735 days retro 147 0.38 35†
  Sinope 1914 18 23,700,000 758 days retro 153 0.28 20†
  S/1999 J1  &  1999 24,200,000 768 days retro 10†
  S/2000 J1  2000
  S/2000 J2  2000 21,000,000 to 24,000,000 retro 15 to 30 < 5
  S/2000 J3  2000 21,000,000 to 24,000,000 retro < 5
  S/2000 J4  2000 21,000,000 to 24,000,000 retro 15 to 30 < 5
  S/2000 J5  2000 21,000,000 to 24,000,000 retro 15 to 30 < 5
  S/2000 J6  2000 21,000,000 to 24,000,000 retro 15 to 30 < 5
  S/2000 J7  2000 21,000,000 to 24,000,000 retro < 5
  S/2000 J8  2000 21,000,000 to 24,000,000 retro 15 to 30 < 5
  S/2000 J9  2000 21,000,000 to 24,000,000 retro 15 to 30 < 5
  S/2000 J10  2000 21,000,000 to 24,000,000 retro 15 to 30 < 5
  S/2000 J11  2000 13,000,000 15 to 30 < 5
Saturn Pan 1990 133,570 13.82 hours 0† 0† 10†
  Atlas 1980 18 137,640 14.45 hours 0† 0† 20 × 15
  Prometheus 1980 15.8 139,350 14.712 hours 0† 0 70 × 40
  Pandora 1980 16.5 141,700 15.10 hours 0† 0 55 × 35
  Epimetheus 1966 15.7 151,422 16.66 hours 0.34 0.01 70 × 50
  Janus 1966 14.5 151,472 16.68 hours 0.14 0.01 110 × 80
  Miamas 1789 12.9 185,520 22.61 hours 0.53 0.02 195 3.8 ×1022 1.17
  Enceladus 1789 11.7 238,020 8.88 hours 0.02 0 250 8.4 ×1022 1.24
  Tethys 1684 10.2 294,660 1.888 days 1.09 0 525 7.55 ×1023 1.26
  Telesto 1980 18.7 294,660 1.888 days 0† 0† 12†
  Calypso 1980 19 294,660 1.888 days 0† 0† 15 × 10
  Dione 1684 10.4 377,400 2.737 days 0.02 0 560 1.05 ×1024 1.44
  Helene 1980 18.4 377,400 2.737 days 0.2 0.01 18 × 15
  Rhea 1672 9.7 527,040 4.518 days 0.35 0 765 2.49 ×1024 1.33
  Titan 1655 8.3 1,221,850 15.945 days 0.33 0.03 2575 1.35 ×1026 1.88
  Hyperion 1848 14.2 1,481,000 21.277 days 0.43 0.1 185 × 140 × 113
  Iapetus 1671 10.2 to 11.9 3,561,300 79.331 days 14.72 0.03 720 1.88 ×1024 1.21
  Phœbe 1898 16.5 12,952,000 9.4 hours
(OP: 550.48 days)		 175.3 0.16 110
  S/2000 S1  2000 20 - 22 > 15,000,000 10 - 50
  S/2000 S2  2000 20 - 22 > 15,000,000 10 - 50
  S/2000 S3  2000 20 - 22 > 15,000,000 10 - 50
  S/2000 S4  2000 20 - 22 > 15,000,000 10 - 50
  S/2000 S7  2000 23 - 24 < 10
  S/2000 S8  2000 23 - 24 < 10
  S/2000 S9  2000 23 - 24 < 10
  S/2000 S10  2000 23 - 24 < 10
Uranus Cordelia 1986 24 49,750 8.04 hours 0.14† 0† 15†
  Ophelia 1986 24 53,760 9.02 hours 0.09† 0.01† 15†
  Bianca 1986 23 59,160 10.44 hours 0.16† 0† 20†
  Cressida 1986 22 61,770 11.14 hours 0.04† 0† 35†
  Desdemona 1986 22 62,660 11.14 hours 0.16† 0† 30†
  Juliet 1986 22 64,360 11.83 hours 0.06† 0† 40†
  Portia 1986 21 66,100 12.31 hours 0.09† 0† 55†
  Rosalind 1986 22 66,930 13.39 hours 0.28† 0† 30†
  Belinda 1986 22 72,260 14.98 hours 0.03† 0† 35†
  Puck 1985 20 86,010 18.29 hours 0.31† 0† 70
  Miranda 1948 16.5 129,780 9.94 hours 3.4 0 235 6.89 ×1022 1.35
  Ariel 1851 14.4 191,240 2.52 days 0 0 580 1.26 ×1024 1.66
  Umbriel 1851 14.4 191,240 2.52 days 0 0 585 1.33 ×1024 1.51
  Titania 1787 13.7 435,840 8.71 days 0 0 790 3.48 ×1024 1.68
  Oberon 1787 13.9 582,600 13.46 days 0 0 760 3.03 ×1024 1.58
  Caliban 1997 22 7,168,900 1.6† years 139.68 0.082 30†
  Sycorax 1997 20 12,213,600 3.5† years 152.67 0.509 60†
  unknown 1
  unknown 2
  unknown 3
  unknown 4
Neptune Naiad 1989 25 48,200 7.10 hours 4.7† 0† 25†
  Thalassa 1989 24 50,000 7.49 hours 0† 0† 40†
  Despina 1989 23 52,500 8.00 hours 0† 0† 90†
  Galatea 1989 23 62,000 10.30 hours 0† 0† 75†
  Larissa 1989 21 73,600 13.30 hours 0† 0† 95†
  Proteus 1989 20 117,600 29.064 hours 0† 0† 200†
  Triton 1846 13.6 354,300 5.877 days 157 0 1350 2.14 ×1025 2.07
  Nereid 1949 18.7 5,513,400 360.16 days 29 0.75 170†
Pluto Charon 1978 16.8 19,640 6.3872 days 98.9 0 595 1.77 ×1024† 2.0†

† denotes inaccuracy of greater than ±10%