Planets & moons of the solar system

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Planets of the solar system

The planets of the solar system from closest to the sun outwards, along with the names of major satellites and the sizes of each

Satellites are names according to which planet they orbit. Jupiter's satellites are named after figures who featured in the life of Zeus (Jupiter is named after the Greek god Zeus). Saturn's satellites are named after mythological Greek titans and also giants from Inuit, Norse and Gallic mythology. Uranus' satellites are named after characters from Shakespeare's plays. Neptune's satellites are names after water nymphs

Planet Size
No. of
Satellite Name Satellite Size
Mercury4,880 km0  
Venus12,103.6 km0  
Earth12,756.3 km1Moon3476 km
Mars6,794 km2Phobos22.2 km
Deimos12.6 km
Jupiter142,984 km63 total
16 major
47 minor
Ganymede5262 km
Callisto4800 km
Io3630 km
Europa3138 km
Amalthea189 km
Himalia186 km
Thebe100 km
Elara76 km
Pasiphae50 km
Metis40 km
Carme40 km
Lysithea36 km
Sinope36 km
Ananke30 km
Adrastea20 km
Leda16 km
Saturn120,536 km33 total
18 major
moons, &
15 minor
Titan5150 km
Rhea1530 km
Iapetus1460 km
Dione1120 km
Tethys1060 km
Enceladus498 km
Mimas392 km
Hyperion286 km
Phoebe220 km
Janus178 km
Epimetheus115 km
Prometheus91 km
Pandora84 km
Helene33 km
Atlas30 km
Telesto29 km
Calypso26 km
Pan20 km
Uranus51,118 km27 total
21 named
moons, &
6 unamed
Titania1578 km
Oberon1523 km
Umbriel1170 km
Ariel1158 km
Miranda472 km
Sycorax160 km
Puck154 km
Portia110 km
Juliet84 km
Caliban80 km
Belinda68 km
Cressida66 km
Desdemona58 km
Rosalind54 km
Bianca44 km
Ophelia32 km
Prospero30 km
Setebos30 km
Stephano30 km
Trinculo30 km
Cordelia26 km
Neptune49,532 km13 total
8 named
moons, &
5 unamed
Triton2700 km
Proteus418 km
Nereid340 km
Larissa193 km
Galatea158 km
Despina148 km
Thalassa80 km
Naiad58 km
Pluto2274 km3Charon1172 km
S/2005 P160 km
S/2005 P250 km

Recently discovered satellites

Recent advances in technology have enabled astronomers to detect extremely faint objects orbiting planets. Most of these objects are very small, less than 8 km in diameter, and there has been some controversy about whether these objects can be classed as moons or just space rocks. However all newly found satellites are still being offically named until a decision has been made about what characteristics determines true moon-ness.

Below are some of the newly discovered moons with naming schemes following tradition

Temporary Name Approved Name
Jupiter Satellites
S/2001 J 11Aitne
S/2001 J 1Autonoe
S/1999 J 1Callirrhoe
S/2000 J 10Chaldene
S/2000 J 4Erinome
S/2001 J 7Euanthe
S/2001 J 10Euporie
S/2001 J 4Eurydome
S/2000 J 5Harpalyke
S/2001 J 3Hermippe
S/2000 J 3Iocaste
S/2000 J 6Isonoe
S/2001 J 8Kale
S/2000 J 2Kalyke
S/2000 J 8Megaclite
S/2001 J 9Orthosie
S/2001 J 6Pasithee
S/2000 J 7Praxidike
S/2001 J 5Sponde
S/2000 J 9Taygete
S/1975 J 1Themisto
S/2001 J 2Thyone
Saturn Satellites
S/2000 S 11Albiorix
S/2000 S 10Erriapo
S/2000 S 6Ijiraq
S/2000 S 5Kiviuq
S/2000 S 9Mundilfari
S/2000 S 2Paaliaq
S/2000 S 3Siarnaq
S/2000 S 8Skathi
S/2000 S 12Suttungr
S/2000 S 4Tarvos
S/2000 S 7Thrymr
S/2000 S 1Ymir
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