Difference between revisions of "Saturn"

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'''Saturn''' is the sixth planet in the [[Solar System]].  Its orbit lies between the orbits of [[Jupiter]] and [[Uranus]].  Saturn is the second largest planet in the Solar System after Jupiter.  Saturn is a gas giant, and is famous for its large, complex system of rings.  The rings are composed of thousands of rocks made of ices of various chemical compounds, including methane, hexane, and ammonia.
 
'''Saturn''' is the sixth planet in the [[Solar System]].  Its orbit lies between the orbits of [[Jupiter]] and [[Uranus]].  Saturn is the second largest planet in the Solar System after Jupiter.  Saturn is a gas giant, and is famous for its large, complex system of rings.  The rings are composed of thousands of rocks made of ices of various chemical compounds, including methane, hexane, and ammonia.
  
Like the other planets in our solar system, the name Saturn comes from Roman mythology.  Saturn is named for the father of [[Jupiter]], the king of the gods in the Roman pantheon.  
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Like the other planets in our solar system, the name Saturn comes from Roman mythology.  Saturn is named for the father of [[Jupiter]], the king of the gods in the Roman pantheon. The ancient Greeks called Saturn Chronos.
  
 
Saturn has approximately 60 moons, including [[Titan (moon)|Titan]], which was long believed to be the largest moon in the Solar System.  Some of its other moons include Tethys, Mimas, Dione, Baleet, Phoebe, Phah, and Iapetus.
 
Saturn has approximately 60 moons, including [[Titan (moon)|Titan]], which was long believed to be the largest moon in the Solar System.  Some of its other moons include Tethys, Mimas, Dione, Baleet, Phoebe, Phah, and Iapetus.

Revision as of 14:03, March 29, 2008

For other uses, please see Saturn (disambiguation).
Saturn
Saturnrings.jpg
Image of Saturn captured by the Hubble Space Telescope in October 1996
Symbol Saturn symbol.svg
Name of discoverer Known to ancients
Name origin Roman god of harvest
Orbital characteristics
Primary Sun
Order from primary 7
Perihelion 9.02 AU
Aphelion 10.05 AU
Semi-major axis 9.537 AU
Titius-Bode prediction 10.0 AU
Circumference 59.879 AU
Orbital eccentricity 0.054
Sidereal year 29.458 a
Synodic year 378.10 da (1.035 a)
Avg. orbital speed 10.183 km/s
Inclination 2.484° to the ecliptic
Rotational characteristics
Sidereal day 10.783 h (0.449 da)
Axial tilt 26.73°
Physical characteristics
Mass 5.6846 * 1026 kg (95.124 * earth)
Density 687.3 kg/m³
Equatorial radius 60,268 km
Surface gravity 9.05 m/s² (0.923 g)
Escape speed 35.49 km/s
Surface area 42,700,000,000 km² (83.714 * earth)
Mean temperature 134 K
Number of moons 60 (approx)
Composition 75% hydrogen and 25% helium gas
Color Yellow
Albedo 0.47

Saturn is the sixth planet in the Solar System. Its orbit lies between the orbits of Jupiter and Uranus. Saturn is the second largest planet in the Solar System after Jupiter. Saturn is a gas giant, and is famous for its large, complex system of rings. The rings are composed of thousands of rocks made of ices of various chemical compounds, including methane, hexane, and ammonia.

Like the other planets in our solar system, the name Saturn comes from Roman mythology. Saturn is named for the father of Jupiter, the king of the gods in the Roman pantheon. The ancient Greeks called Saturn Chronos.

Saturn has approximately 60 moons, including Titan, which was long believed to be the largest moon in the Solar System. Some of its other moons include Tethys, Mimas, Dione, Baleet, Phoebe, Phah, and Iapetus.

Saturn was known to ancient astronomers, as it was visible to the naked eye. In Mesopotamia, Saturn was known as Mulanna, or "The Goat." Saturn was first visited by NASA's Pioneer 11 in 1979 and later by Voyager 1 and Voyager 2. Cassini (a joint NASA / ESA project) arrived on July 1, 2004 and will orbit Saturn for at least four years.[1]

References

  1. http://www.nineplanets.org/saturn.html