This page lists the 203 known moons of all the planets in our solar system. Every so often new moons are discovered for the outer dwarf planets.
Mercury Moons = 0
Mercury is too close to the Sun to hold on to a moon.
Venus Moons = 0
Venus may have had a moon in the distant past, which collided with another object and then impacted Venus.
Earth Moons = 1
Earth also has several quasi-satellites, asteroid 2016 HO3 being the closest with the most stable orbit.
Mars Moons = 2
Both moons may be captured asteroids, and can be viewed in most amateur telescopes.
Dwarf Ceres Moons = 0
Jupiter Moons = 79
Listed in order of size. The first 4 moons listed, the Galilean moons, are viewable with binoculars and any telescope, while Amalthea can be be viewed in larger amateur telescopes.
Saturn Moons = 62
Listed in order of size. The first 7 or 8 moons listed are viewable using a decent-sized telescope. Titan is viewable with binoculars. Saturn also has millions of moonlets embedded in its ring system.
Uranus Moons = 27
Listed in order of size. The first 4 moons can be viewed in larger telescopes.
Neptune Moons = 14
Listed in order of size. Triton is viewable using an 8-inch or larger telescope.
- KUIPER BELT REGION -
Dwarf Pluto Moons = 5
Listed in order of size. Pluto and Charon are considered a binary dwarf planet system and are only visible in large amateur telescopes.
Dwarf Orcus Moons = 1
Dwarf Haumea Moons = 2
Dwarf Quaoar Moons = 1
Dwarf Makemake Moons = 1
Dwarf 2007 OR10 Moons = 1
Dwarf Eris Moons = 1
Dwarf Salacia Moons = 1
- INNER OORT CLOUD REGION -
Objects here are in very elongated orbits that travel from the Kuiper Belt out to the inner Oort Cloud.
Dwarf 2012 VP113 Moons = 0
Dwarf Sedna Moons = 0
Dwarf "The Goblin" (2015 TG387) Moons = 0
Dwarf "Caju" (2015 BP519) Moons = 0
Dwarf "Farout" (2018 VG18) Moons = 0
Planet 9 Moons = ?
Find your inner astronomer. Your complete guide to amateur astronomy.