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Planetary Fact Sheet - Online Solar System Stats

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Planetary Fact Sheet

Explore detailed statistics of our solar system's planets. Compare sizes, orbits, moons, temperatures and more.

Data sources: NASA Planetary Fact Sheets. Values are approximate.

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Planet Distance Diameter Temperature Moons

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Planet Comparison

Frequently Asked Questions

Jupiter is the largest planet, with an equatorial diameter of about 142,984 km (88,846 miles) and more than twice the mass of all other planets combined.

Mercury is the closest planet to the Sun, orbiting at an average distance of 0.39 AU (about 57.9 million km or 36 million miles).

Saturn currently holds the record with 146 confirmed moons, followed closely by Jupiter with 95 confirmed moons (as of 2024).

Venus is the hottest planet despite being second from the Sun, with a surface temperature of around 462°C (864°F) due to its thick greenhouse atmosphere.

Venus has an extremely slow rotation: one sidereal day lasts about 243 Earth days, which is longer than its orbital period (225 Earth days). It also rotates retrograde (backwards).

Saturn's rings are made of billions of ice and rock particles, likely remnants of comets, asteroids, or shattered moons. The rings are held in place by Saturn's gravity and shepherd moons.

Earth has the highest density of any planet in the solar system, averaging 5.51 g/cm³, thanks to its large metallic core.

This fact sheet focuses on the eight major planets. Dwarf planets like Pluto, Ceres, Eris, Makemake, and Haumea are not displayed but are recognized by the IAU.
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