Quick Facts

  • Diameter: ~ 5260 KM

  • Adjective used: Ganymedian, Ganymedean

  • Pronunciation: GAN Uh Meed

  • Alternate names: Jupiter III

  • Ganymedian Day:

  • Ganymedian Year:

  • Type: Tidally-locked Natural Satellite

  • Distance from Jupiter: ~ 1,070,400 KM

  • Natural Satellite: 0

Ganymede, also known as Jupiter III, one of Jovian moon, is the largest and the massive natural satellite in the solar system. It is also the ninth largest object in the solar system, even larger than the planet Mercury. Ganymede is one of four Galilean Moons – a special group of moons under Jovian moons – which were discovered by Galileo Galilei. Ganymede is seventh in line from the Jupiter and is tidally locked to Jupiter.

Ganymede enjoys a metallic core, hence making Ganymede the only known moon in the solar system to have magnetic field. If Ganymede were orbiting the Sun rather than Jupiter, it would have been classified as a planet itself. Ganymede has a thin oxygen atmosphere that includes O, O2 and O3.

Named after

Ganymede is named after Greek mythological mortal Ganymedes. Ganymedes was abducted by Zeus to make him the cup bearer of the Greek gods. It is believed Ganymede was one of the lovers of Zeus – Greek mythological king of sky and thunder.