The total number of moons in the solar system is reported to be more than 891 as of early 2025. This includes:
- Approximately 421 officially recognized moons orbiting planets and dwarf planets.
- Over 470 moons orbiting other bodies such as dwarf planets, asteroids, and trans-Neptunian objects.
Among the planets, the largest numbers of moons are found orbiting the gas giants:
- Saturn has the most with around 274 moons.
- Jupiter follows with about 97 known moons.
- Uranus has 29 moons.
- Neptune has 16 moons.
Terrestrial planets have fewer moons: Earth has 1, Mars 2, and Mercury and Venus have none.
Thus, the solar system has a vast and diverse collection of moons totaling nearly 900 or more natural satellites. Many more small moons likely remain to be discovered with improving observation techniques.