Saturn


Saturn is the 6th planet in the Solar System. Saturn was the farthest planet known to Ancient Man (i.e. the most remote 'naked-eye' planet. It is also called 'The Ringed Planet' because of its magnificent ring system. However, this term is seldom used today following discoveries of rings around Jupiter, Uranus and Neptune.

 


 

 

Mission to Saturn

by David M. Harland

Book Info
David Harland reviews the exploration of Saturn, from the discoveries of the early astronomers through telescopes to the robotic probes and fly-bys of the late 1970s and early 1980s. He explains how the mission was planned, how it operates, and how its observations will revolutionize our knowledge of Saturnian system.

Book Description
"We learned more about Saturn in one week than in the entire span of human history." -Bradford Smith, Voyager Imaging Team Leader

In MISSION TO SATURN, David Harland reviews the exploration of Saturn, from the discoveries of the early astronomers through telescopes to the robotic probes and fly-bys of the late 1970s and early 1980s. He then goes on to place our present knowledge in the context of the Cassini-Huygens mission, which is due to enter orbit around Saturn in 2004. This joint US/European venture will make a four-year orbital tour of the Saturnian system, with one highlight being the descent of the Huygens Probe into the atmosphere of Titan, the largest of the system's satellites which - possibly - is laced with the complex molecules which, on Earth, were the precursors to life.

The author explains how the mission was planned, how it will operate, and how its observations, will revolutionize our knowledge and understanding of the Saturnian system.

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Orbital Parameters

Minimum Distance from Sun 1347 million km

9.008 AU

Mean Distance from Sun 1427.0 million km

9.539 AU

Maximum Distance from Sun 1507 million km

10.069 AU

Sidereal Period (year) 10,759.20 Earth-days

29.46 Earth-years

Synodic Period 378.1 Earth-days
Rotational Period (day) Equatorial (System I) 10h 13m 59s Earth-time
Rotational Period (day)

Internal (System III)

10h 39m 25s Earth-time
Mean Orbital Velocity 9.6 km/sec
Orbital Inclination 2º 29' 21.6"
Axial inclination 26º 44'

Physical Parameters

Equatorial Diameter 120,536 kilometres
Polar Diameter 108,728 kilometres
Oblateness 0.1
Mass 95.17 x Earth
Volume 744 x Earth
Density 0.71 x (the density of water)

Saturn is the least dense planet in the Solar System and in theory would float on water

Surface Gravity 1.16 x Earth
Escape Velocity 32.26 kilometres per second
Albedo 0.61
Mean cloudtop temperature -180ºC


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