Saturn and its Moons

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Saturn and its Moons
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Physical Properties of Jupiter and Saturn
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Saturn Compared with Jupiter
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Comparison of the Atmospheres of Jupiter and
Saturn
Jupiter
Saturn
Jupiter
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Oblateness
Note In order for an object to move in a circle,
it must experience a force toward the center of
the circle. This force is called the centripetal
force.
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What determines the temperature of a planet?
Retention of heat due to greenhouse gases(e.g.,
CO2 and H2O) in planets atmosphere.
Primordial Internal Heat or Heat from Radioactive
Decay
Sunlight
For Saturn, helium rain also heats up the
interior. As the liquid helium droplets fall
through the less dense liquid hydrogen,
gravitational potential energy is converted into
thermal energy.
The planets albedo.
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Comparison of Internal Structures of Saturn and
Jupiter
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Saturn and its Moons
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Problem 1 Calculate the period of revolution of
Mimas around Saturn.
M 5.681026 kg
a 1.86,000 km
G 6.6710-11 Nm2/kg2
Problem 2 Calculate Mimas density.
M 3.71019kg
R 398 km
V 1.67106 m3
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Titans Atmosphere
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Artists View of Huygens Descent to Titans
Surface
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Chunks of Ice on Titans Surface
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River Channels on Titan
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Large Crater on Titan
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Tethys
3 km deep crack
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Mimas
R 196 km
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Enceladus
Albedo 0.9
R 250 km
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Iapetus
R 720 km
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Dione
R 560 km
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Tidal Forces and the Roche Limit
R
2.44R
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False Color Image of Saturns Rings
C
CassiniDivision
B
A
The radius of the inner edge of the Cassini
division is 117,500 km. Particles at this
distance have an orbital period of 0.476 day. How
does this account for the existence of the
Cassini division?
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Spokes
Saturns Ring Spokes Animation
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Shepherding Satellites
Saturns F ring
Shepherding Satellites
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Coorbital Satellites(Janus and Epimetheus)
Dimensions of Janus 110 km 80 km 100
kmDimensions of Epimetheus 110 km 80 km 100 km
Radius of Janus Orbit 151,470 km Radius of
Epimetheus Orbit 151 420 km