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Of the Solar System's eight planets and its nine most likely dwarf planets, six planets and seven dwarf planets are known to be orbited by at least 300 natural satellites, or moons. At least 19 of them are large enough to be gravitationally rounded; of these, all are covered by a crust of ice except for Earth's Moon and Jupiter's Io . [ 1 ]
Ganymede, or Jupiter III, is the largest and most massive natural satellite of Jupiter, and in the Solar System. Despite being the only moon in the Solar System with a substantial magnetic field , it is the largest Solar System object without a substantial atmosphere.
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]
S/2003 J 12 is a natural satellite of Jupiter, and is one of the smallest known natural satellites in the Solar System.It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.
It was referred to as "Jupiter I", or "The first satellite of Jupiter" until the mid-20th century. [14] With over 400 active volcanos, Io is the most geologically active object in the Solar System. [25] Its surface is dotted with more than 100 mountains, some of which are taller than Earth's Mount Everest. [26]
Megaclite / m ɛ ɡ ə ˈ k l aɪ t iː /, also known as Jupiter XIX, is a natural satellite of Jupiter.It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000, and given the temporary designation S/2000 J 8.
S/2003 J 23 is a natural satellite of Jupiter.It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard et al. in 2004 from pictures taken in 2003.
Kallichore / k ə ˈ l ɪ k ɒ r iː /, also known as Jupiter XLIV, is a natural satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003. It received the temporary designation S/2003 J 11. [4] [5]