Size of Saturn

by Fraser Cain on June 30, 2008

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Saturn is a big planet. The largest planet in the Solar System is Jupiter, but Saturn comes in second. And it’s much larger than Earth.

Let’s start with mass. The mass of Saturn is 5.6846×1026 kg. Just for comparison, this is about 95 times the mass of the Earth. Of course, the mass of Saturn is only 1/3rd the mass of Jupiter.

Next, diameter. The diameter of Saturn is 120,536 km across its equator (and 108,728 from pole to pole). And for comparison, this is about 9.4 times the diameter of the Earth.

Now volume. The total volume of Saturn is 8.2713×1014 cubic km. You could fit 764 Earths nicely inside the volume of Saturn.

And finally, surface area. The surface area of Saturn is 4.27 x 1010 square km. This is almost 84 times the surface area of the Earth.

Here’s information about the size of Jupiter, the largest planet in the Solar System, and the size of Mercury, the smallest planet in the Solar System.

If you’d like more info on Saturn, check out Hubblesite’s News Releases about Saturn. And here’s a link to the homepage of NASA’s Cassini spacecraft, which is orbiting Saturn.

We have recorded two episodes of Astronomy Cast just about Saturn. The first is Episode 59: Saturn, and the second is Episode 61: Saturn’s Moons.

About 

Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay.

laura and karley October 31, 2008 at 1:52 PM

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