SpaceAbout Saturn
Saturn is the sixth planet from the Sun and the second largest planet in the solar system, famous for its rings. It has dozens of moons, among them Enceladus, which sprays jets of water, and smoggy Titan with its lakes of methane.
Source: NASA, read on 12 November 2026.
Saturn compared with Earth
Size. Saturn is 120,536 km across. That is 9.4 times the width of Earth (12,756 km). About 9.4 Earths would fit side by side across it. Its mass is 95.1 times Earth's.
Gravity and your weight. Gravity at its cloud tops is 9 m/s², against 9.8 on Earth. So things weigh 92% of what they do on Earth. Someone who weighs 50 kg on Earth would feel like 45.9 kg there. The giant planets have no solid surface to stand on, so the figure is for the level in the atmosphere where the pressure is 1 bar. Try your own weight in the weight calculator.
Day. Saturn turns once on its axis in 10.7 hours. From one noon to the next, its day lasts 10.7 hours.
Year. One trip round the Sun takes 10,747 Earth days, which is 29.43 Earth years. A ten-year-old on Earth would be 0.3 years old there, counting in that world's years. See the age calculator.
Distance. Saturn is on average 1,432 million km from the Sun, between 1,357.6 million km at its closest and 1,506.5 million km at its farthest. Sunlight takes 79.6 minutes to arrive. That is 9.57 times Earth's distance.
Tilt and temperature. Its axis is tilted by 26.7°. A tilt like this gives it seasons, as on Earth (23.4°). The mean temperature in the fact sheet is −140 °C.
Moons, rings and magnetism. The fact sheet counts 274 moons for Saturn. Rings: yes. A global magnetic field: yes.
All the figures
| Diameter | 120,536 km |
|---|---|
| Mass | 568 × 10²⁴ kg |
| Density | 687 kg/m³ |
| Gravity | 9 m/s² |
| Escape velocity | 35.5 km/s |
| Rotation period | 10.7 hours |
| Length of day | 10.7 hours |
| Distance from the Sun | 1,432 million km |
| Closest | 1,357.6 million km |
| Farthest | 1,506.5 million km |
| Orbital period | 10,747 days |
| Orbital velocity | 9.7 km/s |
| Orbital inclination | 2.5° |
| Orbital eccentricity | 0.052 |
| Tilt of axis | 26.7° |
| Mean temperature | −140 °C |
| Surface pressure | Unknown |
| Moons | 274 |
| Rings | Yes |
| Global magnetic field | Yes |
Figures: NASA NSSDCA Planetary Fact Sheet, last updated by NASA on 18 March 2025, read on 12 November 2026. NASA rounds these values. Counts of moons change as new ones are confirmed.
Common questions
How big is Saturn compared with Earth?
Saturn is 120,536 km across, 9.45 times the diameter of Earth.
How long is a day on Saturn?
From noon to noon, a day on Saturn lasts 10.7 hours.
How many moons does Saturn have?
The NASA fact sheet read on 12 November 2026 gives 274.