PlanetDB

143 celestial bodies from planets to comets, moons to exoplanets.

By Category

18Moon of Saturn17Moon of Jupiter17Comet14Asteroid13Exoplanet12Moon of Uranus10Trans-Neptunian9Dwarf Planet9Moon of Neptune6Star6Centaur4Inner Planet4Outer Planet

By System

86Solar System16Kuiper Belt12Asteroid Belt7Outer Solar System

Planets

Mercury

Inner PlanetSolar System88 days

Terrestrial rocky planet closest to the Sun. Surface temperatures swing from -180C at nigh...

Venus

Inner PlanetSolar System225 days

The hottest planet at 465C due to runaway greenhouse effect. Rotates backwards compared to...

Earth

Inner PlanetSolar System365.25 days

The only known planet with confirmed life. 71 percent covered in water. The magnetic field...

Mars

Inner PlanetSolar System687 days

The Red Planet due to iron oxide on its surface. Olympus Mons is the tallest volcano in th...

Jupiter

Outer PlanetSolar System11.86 years

The largest planet, 1,321 Earths could fit inside. The Great Red Spot is a storm larger th...

Saturn

Outer PlanetSolar System29.46 years

Famous for its spectacular ring system made of ice and rock. The rings span 282,000 km but...

Uranus

Outer PlanetSolar System84 years

Rotates on its side with an axial tilt of 98 degrees, likely from a massive ancient collis...

Neptune

Outer PlanetSolar System165 years

The windiest planet with speeds reaching 2,100 km per hour. The most distant planet from t...