E2N4_Sep29[1] - Saturn and Its Moons Best Earth-based Image...

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Saturn and Its Moons
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Best Earth-based Image of Saturn
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Schematic of Saturn and its Rings
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Telescopic View from Earth over Saturn ` s 29 yr Orbit
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Saturn ` s Fact Sheet Physical properties (relative to Earth): density=0.13 would foat in your tub!;Mass=95.2; Radius=9.41; Gravity 1.07(100lbs =>107 lbs)---at cloud tops Fast Rotation (prograde): sidereal period is about 10 hr 40 m, varies with latitude Orbital period 29.4 yr Distance from Sun : 9.5 AU (semi-major axis) Many moons ( 18 relatively large ) B-±eld : 2/3 oF Earths ±eld at the equator Extensive Complex Rings icy large particles From boulders, down to the size oF dust in room; liFetime oF hundreds oF millions oF years => replenished?
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Saturn ` s Red Spot
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Interiors of Giant Planets
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Interiors of Giant Planets
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Saturn ` s Aurora
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Behind Saturn with Voyager 2
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Close up of complex ring structure, shows rings are not solid
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Artist's concept of ring particles
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Two Shepherd Satellites
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Spokes on Saturn ` s Rings
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Saturn ` s Moons • Titan and others • Others fall into two groups – Small rocklike: little is known about these – Intermediate between Galilean and smaller moons of Jupiter. Low density, lots of water ice.
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Epimetheus : a rock-like moon 100 x 140 km
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Saturn ` s 3 Major Icy Moons Mimas (390km) Tethys (1048km) Rhea (1530km )
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---bright ice, dark asphalt like deposit
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This note was uploaded on 11/27/2011 for the course AST 301 taught by Professor Harvey during the Spring '07 term at University of Texas at Austin.

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E2N4_Sep29[1] - Saturn and Its Moons Best Earth-based Image...

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