lundi 11 mai 2009

:: Saturn moons

Main moons of Saturn:

Prometheus
Prometheus, the third known moon of Saturn, is small and potato-shaped and it orbits Saturn in the ring F. It has a few craters of about 20 km that are in diameter visible.
In the Greek mythology, Prometheus was a titan, it is known for stealing fire from Zeus and giving it to humans.
  • Distance from Saturn: 139 353 km
  • Diameter: 91 km
  • Time to orbit Saturn: 0.61 days
Enceladus
Tenth moon from Saturn, Encelade orbits the Planet in the Ring E. This moon is the brightest object in the known solar system. It was discovered by William Hershel in 1789. This moon displays at least 5 different types of terrain.
  • Diameter: 500 km
  • Distance from Saturn: 238 020 km
  • Time to orbit Saturn: 1.37 Earth days

Dione
Nice and round, Dione was discovered by Cassiny the same day as Tethys. It is an icy body and is one of the densest moons of Saturn. Its surface is heavily cratered. Some of its craters are more than 100 km.
  • Distance from Saturn: 377 400 km
  • Diameter: 1120 km
  • Time to orbit Saturn: 2.74 Earth days

Titan, the size of Mercury, is the largest of Saturn's moons. Before the Voyager encounters, scientists thought a lot of things that are now known to be wrong.
Titan's surface temperature appears to be about -178°C.
  • Distance of Saturn: 1.22 million km
  • Time to orbit Saturn: 15.9 earth days
  • Diameter: 5 150 km
There are much more important moons of Saturn but please don't expect me to write about them because there are... 61!! Only 34 are named though.

The diameters of Saturn's moons range from 2 to 5150 kms.

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