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Ganymede's magnetic field is probably created by convection within its core, and influenced by tidal forces from Jupiter's far greater magnetic field. [23] Ganymede has a thin oxygen atmosphere that includes O, O 2, and possibly O 3 . [17] Atomic hydrogen is a minor atmospheric constituent.
Ganymede (Jupiter III), the third Galilean moon, is named after the mythological Ganymede, cupbearer of the Greek gods and Zeus's beloved. [41] Ganymede is the largest natural satellite in the Solar System at 5262.4 kilometers in diameter, which makes it larger than the planet Mercury – although only at about half of its mass [ 42 ] since ...
A montage of Jupiter and its four largest moons (distance and sizes not to scale) There are 95 moons of Jupiter with confirmed orbits as of 5 February 2024. [1] [note 1] This number does not include a number of meter-sized moonlets thought to be shed from the inner moons, nor hundreds of possible kilometer-sized outer irregular moons that were only briefly captured by telescopes. [4]
Ganymede, the largest of the four, is larger than the planet Mercury. ... [130] [131] The average distance between Jupiter and the Sun is 778 million km ...
In this phase Juno began to examine Jupiter's inner moons, Ganymede, Europa and Io. A flyby of Ganymede occurred on June 7, 2021, 17:35 UTC, coming within 1,038 km (645 mi), the closest any spacecraft has come to the moon since Galileo in 2000. [23] [24] [57] A flyby of Europa took place on September 29, 2022, at a distance of 352 km (219 mi).
Voyager 2 passed Io on July 9, 1979 at a distance of 1,130,000 km (702,000 mi), approaching Jupiter between the orbits of Europa and Ganymede. [58] Though it did not approach nearly as close to Io as Voyager 1 , comparisons between images taken by the two spacecraft showed several surface changes that had occurred in the four months between the ...
Jupiter ♃ Moons of Jupiter. Io; Europa; Ganymede; Callisto; Rings of Jupiter; ... By distance List of Solar System objects most distant from the Sun;
One particularly distant body is 90377 Sedna, which was discovered in November 2003.It has an extremely eccentric orbit that takes it to an aphelion of 937 AU. [2] It takes over 10,000 years to orbit, and during the next 50 years it will slowly move closer to the Sun as it comes to perihelion at a distance of 76 AU from the Sun. [3] Sedna is the largest known sednoid, a class of objects that ...