A field guide to the solar system

The solar system, catalogued and freely browseable.

Planets, moons, dwarf planets, asteroids, comets and the icy worlds beyond Neptune — drawn from NASA/JPL and the IAU Minor Planet Center, refreshed nightly. The underlying data is public domain and free for you to use.

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38,767

objects

planets

273

moons

31,827

asteroids

4,065

comets

Catalogue last refreshed 2 months ago.

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Planet

Neptune

Diameter: 49,244 km
Distance: 30.07 AU
Orbital period: 164.8 years

Browse by kind

Planets

The eight worlds of the Sun, from scorched Mercury to deep-blue Neptune.

Dwarf planets

Ceres, Pluto and the icy worlds of the outer system.

Moons

273

Hundreds of natural satellites, from Luna to the shepherd moons of Saturn.

Asteroids

31,827

Rocky remnants of the early solar system, including the near-Earth objects.

Comets

4,065

Icy visitors on long, looping orbits — Halley and its many cousins.

Trans-Neptunian

2,583

The Kuiper Belt, scattered disc and the centaurs beyond Neptune.