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Jupiter's Moon Summary
Radius Mass Distance
Moon # (km) (kg) (km) Discoverer Date
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Metis XVI 20 9.56e+16 127,969 S. Synnott 1979
Adrastea XV 12.5x10x7.5 1.91e+16 128,971 Jewitt-Danielson 1979
Amalthea V 135x84x75 7.17e+18 181,300 E. Barnard 1892
Thebe XIV 55x45 7.77e+17 221,895 S. Synnott 1979
Io I 1,815 8.94e+22 421,600 Marius-Galileo 1610
Europa II 1,569 4.80e+22 670,900 Marius-Galileo 1610
Ganymede III 2,631 1.48e+23 1,070,000 Marius-Galileo 1610
Callisto IV 2,400 1.08e+23 1,883,000 Marius-Galileo 1610
Leda XIII 8 5.68e+15 11,094,000 C. Kowal 1974
Himalia VI 93 9.56e+18 11,480,000 C. Perrine 1904
Lysithea X 18 7.77e+16 11,720,000 S. Nicholson 1938
Elara VII 38 7.77e+17 11,737,000 C. Perrine 1905
Ananke XII 15 3.82e+16 21,200,000 S. Nicholson 1951
Carme XI 20 9.56e+16 22,600,000 S. Nicholson 1938
Pasiphae VIII 25 1.91e+17 23,500,000 P. Melotte 1908
Sinope IX 18 7.77e+16 23,700,000 S. Nicholson 1914
Saturn's Satellites
Distance Radius Mass
Satellite (000 km) (km) (kg) Discoverer Date
--------- -------- ------ ------- ---------- -----
Pan 134 10 ? Showalter 1990
Atlas 138 14 ? Terrile 1980
Prometheus 139 46 2.70e17 Collins 1980
Pandora 142 46 2.20e17 Collins 1980
Epimetheus 151 57 5.60e17 Walker 1980
Janus 151 89 2.01e18 Dollfus 1966
Mimas 186 196 3.80e19 Herschel 1789
Enceladus 238 260 8.40e19 Herschel 1789
Tethys 295 530 7.55e20 Cassini 1684
Telesto 295 15 ? Reitsema 1980
Calypso 295 13 ? Pascu 1980
Dione 377 560 1.05e21 Cassini 1684
Helene 377 16 ? Laques 1980
Rhea 527 765 2.49e21 Cassini 1672
Titan 1222 2575 1.35e23 Huygens 1655
Hyperion 1481 143 1.77e19 Bond 1848
Iapetus 3561 730 1.88e21 Cassini 1671
Phoebe 12952 110 4.00e18 Pickering 1898
Uranus's Satellites
Distance Radius Mass
Satellite (000 km) (km) (kg) Discoverer Date
--------- -------- ------ ------- ---------- -----
Cordelia 50 13 ? Voyager 2 1986
Ophelia 54 16 ? Voyager 2 1986
Bianca 59 22 ? Voyager 2 1986
Cressida 62 33 ? Voyager 2 1986
Desdemona 63 29 ? Voyager 2 1986
Juliet 64 42 ? Voyager 2 1986
Portia 66 55 ? Voyager 2 1986
Rosalind 70 27 ? Voyager 2 1986
Belinda 75 34 ? Voyager 2 1986
Puck 86 77 ? Voyager 2 1985
Miranda 130 236 6.30e19 Kuiper 1948
Ariel 191 579 1.27e21 Lassell 1851
Umbriel 266 585 1.27e21 Lassell 1851
Titania 436 789 3.49e21 Herschel 1787
Oberon 583 761 3.03e21 Herschel 1787
Neptune's Satellites
Distance Radius Mass
Satellite (000 km) (km) (kg) Discoverer Date
--------- -------- ------ ------- ---------- -----
Naiad 48 29 ? Voyager 2 1989
Thalassa 50 40 ? Voyager 2 1989
Despina 53 74 ? Voyager 2 1989
Galatea 62 79 ? Voyager 2 1989
Larissa 74 96 ? Voyager 2 1989
Proteus 118 209 ? Voyager 2 1989
Triton 355 1350 2.14e22 Lassell 1846
Nereid 5509 170 ? Kuiper 1949