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Jupiter is the largest planet in the solar system and has, as of 2023, 95 known moons. The four largest moons of Jupiter—Io, Callisto, Ganymede, and Europa—were the first objects in the solar system discovered with a telescope. Galileo discovered them in 1610, and they are now called the Galilean.
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] .
23 Αυγ 2023 · New moons around the planet are continually being discovered, prompting a question with an ever-changing answer: How many moons does Jupiter have? The short answer? It depends on the day. Earth only has one moon, but dozens of natural satellites orbit Jupiter, the biggest planet in our solar system.
With four large moons and many smaller moons, Jupiter forms a kind of miniature solar system. Jupiter has 80 moons. Fifty-seven moons have been given official names by the International Astronomical Union (IAU). Another 23 moons are awaiting names.
Jupiter has between 80 and 95 moons, but neither number captures the complexity of the Jovian system of moons, rings, and asteroids.
29 Σεπ 2020 · Though Jupiter has 79 moons, 63 of them are less than 10 km / 6.2 mi in diameter. Jupiter’s regular moons consist of the Galilean moons and an inner group of 4 small moons with diameters less than 200 km / 124 mi, and orbits with radii less than 200,000 km / 124,274 mi. All of these moons have orbital inclinations of less than half a degree.
10 Αυγ 2011 · Scientists now think Jupiter has 79 moons. The most recent moons were discovered in 2017. The planet’s four largest moons are Ganymede (GAN-i-meed), Callisto (kuh-LIS-toe), Io (eye-OH), and Europa (yur-O-puh).
