Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Moon | 1737.10 | 384.399 | 27.321582 | prehistoric | — |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Phobos | 11.1 ± 0.15 | 9.380 | 0.319 | 1877 | Hall |
II | Deimos | 6.2 ± 0.18 | 23.460 | 1.262 | 1877 | Hall |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Io | 1818.1 ± 0.1 | 421.800 | 1.769 | 1610 | Galileo |
II | Europa | 1560.7 ± 0.7 | 671.100 | 3.551 | 1610 | Galileo |
III | Ganymede | 2634.1 ± 0.3 | 1.070.400 | 7.155 | 1610 | Galileo |
IV | Callisto | 2408.4 ± 0.3 | 1.882.700 | 16.69 | 1610 | Galileo |
V | Amalthea | 83.45 ± 2.4 | 181.400 | 0.498 | 1892 | Barnard |
VI | Himalia | 67 ± 10 | 11.461.000 | 250.56 | 1904 | Perrine |
VII | Elara | 43 | 11.741.000 | 259.64 | 1905 | Perrine |
VIII | Pasiphae | 30 | 23.624.000 | 743.63 (r) | 1908 | Melotte |
IX | Sinope | 19 | 23.939.000 | 758.90 (r) | 1914 | Nicholson |
X | Lysithea | 18 | 11.717.000 | 259.20 | 1938 | Nicholson |
XI | Carme | 23 | 23.404.000 | 734.17 (r) | 1938 | Nicholson |
XII | Ananke | 14 | 21.276.000 | 629.77 (r) | 1951 | Nicholson |
XIII | Leda | 10 | 11.165.000 | 240.92 | 1974 | Kowal |
XIV | Thebe | 49.3 ± 2.0 | 221.900 | 0.675 | 1979 | Synnott (Voyager 1) |
XV | Adrastea | 8.2 ± 2.0 | 129.000 | 0.298 | 1979 | Jewitt. Danielson (Voyager 1) |
XVI | Metis | 21.5 ± 2.0 | 128.000 | 0.295 | 1979 | Synnott (Voyager 1) |
XVII | Callirrhoe | 4.3 | 24.103.000 | 758.77 (r) | 2000 | Scotti. Spahr. McMillan. Larsen. Montani. Gleason. Gehrels |
XVIII | Themisto | 4.0 | 7.284.000 | 130.02 | 1975/2000 | Kowal and Roemer (original); Sheppard. Jewitt. Fernández. Magnier (rediscovery) |
XIX | Megaclite | 2.7 | 23.493.000 | 752.86 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XX | Taygete | 2.5 | 23.280.000 | 732.41 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXI | Chaldene | 1.9 | 23.100.000 | 723.72 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXII | Harpalyke | 2.2 | 20.858.000 | 623.32 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXIII | Kalyke | 2.6 | 23.483.000 | 742.06 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXIV | Iocaste | 2.6 | 21.060.000 | 631.60 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXV | Erinome | 1.6 | 23.196.000 | 728.46 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXVI | Isonoe | 1.9 | 23.155.000 | 726.23 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXVII | Praxidike | 3.4 | 20.908.000 | 625.39 (r) | 2000 | Sheppard. Jewitt. Fernández. Magnier. Dahm. Evans |
XXVIII | Autonoe | 2.0 | 24.046.000 | 760.95 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXIX | Thyone | 2.0 | 20.939.000 | 627.21 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXX | Hermippe | 2.0 | 21.131.000 | 633.9 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXI | Aitne | 1.5 | 23.229.000 | 730.18 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXII | Eurydome | 1.5 | 22.865.000 | 717.33 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXIII | Euanthe | 1.5 | 20.797.000 | 620.49 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXIV | Euporie | 1.0 | 19.304.000 | 550.74 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXV | Orthosie | 1.0 | 20.720.000 | 622.56 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXVI | Sponde | 1.0 | 23.487.000 | 748.34 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXVII | Kale | 1.0 | 23.217.000 | 729.47 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXVIII | Pasithee | 1.0 | 23.004.000 | 719.44 (r) | 2001 | Sheppard. Jewitt. Kleyna |
XXXIX | Hegemone | 1.5 | 23.577.000 | 739.88 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández |
XL | Mneme | 1.0 | 21.035.000 | 620.04 (r) | 2003 | Gladman. Allen |
XLI | Aoede | 2.0 | 23.980.000 | 761.50 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
XLII | Thelxinoe | 1.0 | 21.164.000 | 628.09 (r) | 2003 | Sheppard. Jewitt. Kleyna. Gladman. Kavelaars. Petit. Allen |
XLIII | Arche | 1.5 | 23.355.000 | 731.95 (r) | 2002 | Sheppard. Meech. Hsieh. Tholen. Tonry |
XLIV | Kallichore | 1.0 | 23.288.000 | 728.73 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández |
XLV | Helike | 2.0 | 21.069.000 | 626.32 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
XLVI | Carpo | 1.5 | 17.058.000 | 456.30 | 2003 | Sheppard. Gladman. Kavelaars. Petit. Allen. Jewitt. Kleyna |
XLVII | Eukelade | 2.0 | 23.328.000 | 730.47 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
XLVIII | Cyllene | 1.0 | 23.809.000 | 752 (r) | 2003 | Sheppard. Jewitt. Kleyna |
XLIX | Kore | 1.0 | 24.543.000 | 779.17 (r) | 2003 | Sheppard. Jewitt. Kleyna |
L | Herse | 1.0 | 22.983.000 | 714.51 (r) | 2003 | Gladman. Sheppard. Jewitt. Kleyna. Kavelaars. Petit. Allen |
LI | S/2010 J 1 | 1.0 | 23.314.335 | 723.2 (r) | 2010 | Jacobson. Brozović. Gladman. Alexandersen |
LII | S/2010 J 2 | 0.5 | 20.307.150 | 588.1 (r) | 2010 | Veillet |
LIII | Dia | 2.0 | 12.570.000 | 287.93 | 2001 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
LIV | S/2016 J 1 | 3.0 | 20.595.480 | 602.7 (r) | 2016 | Sheppard |
LV | S/2003 J 18 | 1.0 | 20.426.000 | 596.58 (r) | 2003 | Gladman. Sheppard. Jewitt. Kleyna. Kavelaars. Petit. Allen |
LVI | S/2011 J 2 | 0.5 | 23.329.710 | 726.8 (r) | 2011 | Sheppard |
LVII | S/2003 J 5 | 2.0 | 23.498.000 | 738.74 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
LVIII | S/2003 J 15 | 1.0 | 22.630.000 | 689.77 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández |
LIX | S/2017 J 1 | 2.0 | 23.483.978 | 734.2 (r) | 2017 | Sheppard |
LX | S/2003 J 3 | 1.0 | 20.224.000 | 583.88 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
— | S/2003 J 2 | 1.0 | 28.455.000 | 981.55 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
— | S/2003 J 4 | 1.0 | 23.933.000 | 755.26 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández. Hsieh |
— | S/2003 J 9 | 0.5 | 23.388.000 | 733.30 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández |
— | S/2003 J 10 | 1.0 | 23.044.000 | 716.25 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández |
— | S/2003 J 12 | 0.5 | 17.833.000 | 489.72 (r) | 2003 | Sheppard. Jewitt. Kleyna. Fernández |
— | S/2003 J 16 | 1.0 | 20.956.000 | 616.33 (r) | 2003 | Gladman. Sheppard. Jewitt. Kleyna. Kavelaars. Petit. Allen |
— | S/2003 J 19 | 1.0 | 23.535.000 | 740.43 (r) | 2003 | Gladman. Sheppard. Jewitt. Kleyna. Kavelaars. Petit. Allen |
— | S/2003 J 23 | 1.0 | 23.566.000 | 732.45 (r) | 2004 | Sheppard. Jewitt. Kleyna. Fernández |
— | S/2011 J 1 | 0.5 | 20.155.290 | 580.7 (r) | 2011 | Sheppard |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Mimas | 198.2 ± 0.4 | 185.540 | 0.942 | 1789 | Herschel |
II | Enceladus | 252.3 ± 0.6 | 238.040 | 1.370 | 1789 | Herschel |
III | Tethys | 536.3 ± 1.5 | 294.670 | 1.888 | 1684 | Cassini |
IV | Dione | 562.5 ± 1.5 | 377.420 | 2.737 | 1684 | Cassini |
V | Rhea | 764.5 ± 2.0 | 527.070 | 4.518 | 1672 | Cassini |
VI | Titan | 2575.5 ± 2.0 | 1.221.870 | 15.95 | 1655 | Huygens |
VII | Hyperion | 133.0 ± 8.0 | 1.500.880 | 21.28 | 1848 | W.Bond. G. Bond. and Lassell |
VIII | Iapetus | 734.5 ± 4.0 | 3.560.840 | 79.33 | 1671 | Cassini |
IX | Phoebe | 106.6 ± 1.1 | 12.947.780 | 550.31 (r) | 1899 | Pickering |
X | Janus | 90.4 ± 3.0 | 151.460 | 0.695 | 1966 | Dollfus |
XI | Epimetheus | 58.3 ± 3.1 | 151.410 | 0.694 | 1980 | Walker |
XII | Helene | 16 ± 4 | 377.420 | 2.737 | 1980 | Laques. Lecacheux |
XIII | Telesto | 12 ± 3 | 294.710 | 1.888 | 1980 | Smith. Reitsema. Larson. Fountain (Voyager 1) |
XIV | Calypso | 9.5 ± 1.5 | 294.710 | 1.888 | 1980 | Pascu. Seidelmann. Baum. Currie |
XV | Atlas | 15.3 ± 1.2 | 137.670 | 0.602 | 1980 | Terrile (Voyager 1) |
XVI | Prometheus | 46.8 ± 5.6 | 139.380 | 0.613 | 1980 | Collins (Voyager 1) |
XVII | Pandora | 40.6 ± 4.5 | 141.720 | 0.629 | 1980 | Collins (Voyager 1) |
XVIII | Pan | 12.8 | 133.580 | 0.575 | 1990 | Showalter (Voyager 2) |
XIX | Ymir | 9 | 23.140.400 | 1.315.58 (r) | 2000 | Gladman |
XX | Paaliaq | 11 | 15.200.000 | 686.95 | 2000 | Gladman |
XXI | Tarvos | 7.5 | 17.983.000 | 926.23 | 2000 | Gladman. Kavelaars |
XXII | Ijiraq | 6 | 11.124.000 | 451.42 | 2000 | Gladman. Kavelaars |
XXIII | Suttungr | 3.5 | 19.459.000 | 1.016.67 (r) | 2000 | Gladman. Kavelaars |
XXIV | Kiviuq | 8 | 11.110.000 | 449.22 | 2000 | Gladman |
XXV | Mundilfari | 3.5 | 18.628.000 | 952.77 (r) | 2000 | Gladman. Kavelaars |
XXVI | Albiorix | 16 | 16.182.000 | 783.45 | 2000 | Holman. Spahr |
XXVII | Skathi | 4 | 15.540.000 | 728.20 (r) | 2000 | Gladman. Kavelaars |
XXVIII | Erriapus | 5 | 17.343.000 | 871.19 | 2000 | Gladman. Kavelaars |
XXIX | Siarnaq | 20 | 18.015.400 | 896.44 | 2000 | Gladman. Kavelaars |
XXX | Thrymr | 3.5 | 20.314.000 | 1.094.11 (r) | 2000 | Gladman. Kavelaars |
XXXI | Narvi | 3.5 | 19.007.000 | 1.003.86 (r) | 2003 | Sheppard. Jewitt. Kleyna |
XXXII | Methone | 1.6 | 194.440 | 1.010 | 2004 | Porco. Charnoz. Brahic. Dones (Cassini–Huygens) |
XXXIII | Pallene | 2 | 212.280 | 1.154 | 2004 | Gordon. Murray. Beurle. et al. (Cassini–Huygens) |
XXXIV | Polydeuces | 1.25 | 377.200 | 2.737 | 2004 | Porco et al. (Cassini–Huygens) |
XXXV | Daphnis | 3–4 | 136.500 | 0.594 | 2005 | Porco et al. (Cassini–Huygens) |
XXXVI | Aegir | 3 | 20.751.000 | 1.117.52 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XXXVII | Bebhionn | 3 | 17.119.000 | 834.84 | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XXXVIII | Bergelmir | 3 | 19.336.000 | 1.005.74 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XXXIX | Bestla | 3.5 | 20.192.000 | 1.088.72 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XL | Farbauti | 2.5 | 20.377.000 | 1.085.55 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XLI | Fenrir | 2 | 22.454.000 | 1.260.35 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XLII | Fornjot | 3 | 25.146.000 | 1.494.2 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XLIII | Hati | 3 | 19.846.000 | 1.038.61 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
XLIV | Hyrrokkin | 4 | 18.437.000 | 931.86 (r) | 2006 | Sheppard. Jewitt. Kleyna |
XLV | Kari | 3.5 | 22.089.000 | 1.230.97 (r) | 2006 | Sheppard. Jewitt. Kleyna |
XLVI | Loge | 3 | 23.058.000 | 1.311.36 (r) | 2006 | Sheppard. Jewitt. Kleyna |
XLVII | Skoll | 3 | 17.665.000 | 878.29 (r) | 2006 | Sheppard. Jewitt. Kleyna |
XLVIII | Surtur | 3 | 22.704.000 | 1.297.36 (r) | 2006 | Sheppard. Jewitt. Kleyna |
XLIX | Anthe | 1 | 197.700 | 1.0365 | 2007 | Porco et al. (Cassini–Huygens) |
L | Jarnsaxa | 3 | 18.811.000 | 964.74 (r) | 2006 | Sheppard. Jewitt. Kleyna |
LI | Greip | 3 | 18.206.000 | 921.19 (r) | 2006 | Sheppard. Jewitt. Kleyna |
LII | Tarqeq | 3.5 | 18.009.000 | 887.48 | 2007 | Sheppard. Jewitt. Kleyna |
LIII | Aegaeon | 0.25 | 167.500 | 0.808 | 2008 | Cassini Imaging Science Team Cassini–Huygens |
— | S/2004 S 7 | 3 | 20.999.000 | 1.140.24 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
— | S/2004 S 12 | 2.5 | 19.878.000 | 1.046.19 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
— | S/2004 S 13 | 3 | 18.404.000 | 933.48 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
— | S/2004 S 17 | 2 | 19.447.000 | 1.014.70 (r) | 2004 | Sheppard. Jewitt. Kleyna. Marsden |
— | S/2006 S 1 | 3 | 18.790.000 | 963.37 (r) | 2006 | Sheppard. Jewitt. Kleyna |
— | S/2006 S 3 | 3 | 22.096.000 | 1.227.21 (r) | 2006 | Sheppard. Jewitt. Kleyna |
— | S/2007 S 2 | 3 | 16.725.000 | 808.08 (r) | 2007 | Sheppard. Jewitt. Kleyna |
— | S/2007 S 3 | 3 | 18.975.000 | 977.8 (r) | 2007 | Sheppard. Jewitt. Kleyna |
— | S/2009 S 1 | 0.15 | 117.000 | 0.471 | 2009 | Cassini Imaging Science Team Cassini–Huygens |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Ariel | 578.9 ± 0.6 | 190.900 | 2.520 | 1851 | Lassell |
II | Umbriel | 584.7 ± 2.8 | 266.000 | 4.144 | 1851 | Lassell |
III | Titania | 788.9 ± 1.8 | 436.300 | 8.706 | 1787 | Herschel |
IV | Oberon | 761.4 ± 2.6 | 583.500 | 13.46 | 1787 | Herschel |
V | Miranda | 235.8 ± 0.7 | 129.900 | 1.413 | 1948 | Kuiper |
VI | Cordelia | 20.1 ± 3 | 49.800 | 0.335 | 1986 | Terrile (Voyager 2) |
VII | Ophelia | 21.4 ± 4 | 53.800 | 0.376 | 1986 | Terrile (Voyager 2) |
VIII | Bianca | 25.7 ± 2 | 59.200 | 0.435 | 1986 | Smith (Voyager 2) |
IX | Cressida | 39.8 ± 2 | 61.800 | 0.464 | 1986 | Synnott (Voyager 2) |
X | Desdemona | 32.0 ± 4 | 62.700 | 0.474 | 1986 | Synnott (Voyager 2) |
XI | Juliet | 46.8 ± 4 | 64.400 | 0.493 | 1986 | Synnott (Voyager 2) |
XII | Portia | 67.6 ± 4 | 66.100 | 0.513 | 1986 | Synnott (Voyager 2) |
XIII | Rosalind | 36 ± 6 | 69.900 | 0.558 | 1986 | Synnott (Voyager 2) |
XIV | Belinda | 40.3 ± 8 | 75.300 | 0.624 | 1986 | Synnott (Voyager 2) |
XV | Puck | 81 ± 2 | 86.000 | 0.762 | 1985 | Synnott (Voyager 2) |
XVI | Caliban | 49 | 7.231.100 | 579.73 (r) | 1997 | Gladman. Nicholson. Burns. Kavelaars |
XVII | Sycorax | 75 | 12.179.400 | 1.288.38 (r) | 1997 | Gladman. Nicholson. Burns. Kavelaars |
XVIII | Prospero | 25 | 16.256.000 | 1.978.29 (r) | 1999 | Gladman. Holman. Kavelaars. Petit. Scholl |
XIX | Setebos | 24 | 17.418.000 | 2.225.21 (r) | 1999 | Gladman. Holman. Kavelaars. Petit. Scholl |
XX | Stephano | 10 | 8.004.000 | 677.36 (r) | 1999 | Gladman. Holman. Kavelaars. Petit. Scholl |
XXI | Trinculo | 5 | 8.504.000 | 749.24 (r) | 2001 | Holman. Kavelaars. Milisavljevic |
XXII | Francisco | 6 | 4.276.000 | 266.56 (r) | 2001 | Holman. Kavelaars. Milisavljevic. Gladman |
XXIII | Margaret | 5.5 | 14.345.000 | 1.687.01 | 2003 | Sheppard. Jewitt |
XXIV | Ferdinand | 6 | 20.901.000 | 2.887.21 (r) | 2001 | Holman. Kavelaars. Milisavljevic. et al. |
XXV | Perdita | 10 | 76.417 | 0.638 | 1986 | Karkoschka (Voyager 2) |
XXVI | Mab | 5 | 97.736 | 0.923 | 2003 | Showalter. Lissauer |
XXVII | Cupid | 5 | 74.392 | 0.613 | 2003 | Showalter. Lissauer |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Triton | 1353.4 ± 0.9 | 354.800 | 5.877 (r) | 1846 | Lassell |
II | Nereid | 170 ± 25 | 5.513.820 | 360.14 | 1949 | Kuiper |
III | Naiad | 33 ± 3 | 48.227 | 0.294 | 1989 | Terrile (Voyager 2) |
IV | Thalassa | 41 ± 3 | 50.075 | 0.311 | 1989 | Terrile (Voyager 2) |
V | Despina | 75 ± 3 | 52.526 | 0.335 | 1989 | Synnott (Voyager 2) |
VI | Galatea | 88 ± 4 | 61.953 | 0.429 | 1989 | Synnott (Voyager 2) |
VII | Larissa | 97 ± 3 | 73.548 | 0.555 | 1982 | Reitsema. Hubbard. Lebofsky. Tholen (Voyager 2) |
VIII | Proteus | 210 ± 7 | 117.647 | 1.122 | 1989 | Synnott (Voyager 2) |
IX | Halimede | 31 | 15.728.000 | 1.879.71 (r) | 2002 | Holman. Kavelaars. Grav. Fraser. Milisavljevic |
X | Psamathe | 20 | 46.695.000 | 9.115.91 (r) | 2003 | Jewitt. Kleyna. Sheppard. Holman. Kavelaars |
XI | Sao | 22 | 22.422.000 | 2.914.07 | 2002 | Holman. Kavelaars. Grav. Fraser. Milisavljevic |
XII | Laomedeia | 21 | 23.571.000 | 3.167.85 | 2002 | Holman. Kavelaars. Grav. Fraser. Milisavljevic |
XIII | Neso | 30 | 48.387.000 | 9.373.99 (r) | 2002 | Holman. Kavelaars. Grav. Fraser. Milisavljevic |
— | S/2004 N 1 | 8–10 | 105.283 | 0.9362 | 2013 | Showalter et al. |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Charon | 603.6 ± 1.4 | 19.591 | 6.387 | 1978 | Christy |
II | Nix | 23.0 ± 2 | 48.671 | 24.85 | 2005 | Weaver. Stern. Buie. et al. |
III | Hydra | 30.5 ± 4 | 64.698 | 38.20 | 2005 | Weaver. Stern. Buie. et al. |
IV | Kerberos | 14.0 | 57.729 | 32.17 | 2011 | Showalter (Hubble) |
V | Styx | 10.0 | 42.393 | 20.16 | 2012 | Showalter (Hubble) |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Hiʻiaka | ~160 | 49.500 ± 400 | 49.12 ± 0.03 | 2005 | Brown et al. |
II | Namaka | ~85 | 39.000 (r) | 34.7 ± 0.1 | 2005 | Brown et al. |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
— | S/2015 (136472) 1 | ~80 | 2016 | Parker et al. |
Numeral | Name | Mean radius [km] | Semi-major axis [km] | Sidereal period (r = retrograde) | Discovery year | Discovered by |
I | Dysnomia | 257 ± 110 | 37.370 ± 150 | 15.774 ± 0.002 | 2005 | Brown. Rabinowitz. Trujillo et al. |