The Largest Planets in the Solar System
Jupiter is the largest planet in the Solar System, with a diameter of about 139,820 kilometres.
Also known as: Biggest planets
Jupiter is the largest and most massive planet in the Solar System, more than twice the mass of all the other planets combined.
What it is
The largest planet in the Solar System is Jupiter, a gas giant with an equatorial diameter of about 139,820 km, roughly eleven times that of Earth. Its mass is about 318 Earth masses, more than two and a half times the combined mass of every other planet in the Solar System.
| Rank | Planet | Equatorial diameter |
|---|---|---|
| 1 | Jupiter | ~139,820 km |
| 2 | Saturn | ~116,460 km |
| 3 | Uranus | ~50,724 km |
| 4 | Neptune | ~49,244 km |
| 5 | Earth | ~12,742 km |
Jupiter's Great Red Spot is a storm larger than the Earth that has persisted for centuries. Despite its size, Jupiter has the shortest day of any planet, rotating once in under ten hours.
Related entries
Sources & further reading
- Jupiter — By the Numbers — NASA Science (article)