GSU ASTR 1010 - Saturn, Uranus, Neptune, And Pluto (5 pages)

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Saturn, Uranus, Neptune, And Pluto



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Saturn, Uranus, Neptune, And Pluto

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Saturn, Uranus, Neptune, And Pluto


Lecture number:
21
Pages:
5
Type:
Lecture Note
School:
Georgia State University
Course:
Astr 1010 - Astronomy of the Solar System
Edition:
1

Unformatted text preview:

ASTR 1010 1st Edition Lecture 21 Outline of Last Lecture I Jupiter A Atmosphere B Properties C Magnetic Properties D Internal Structure E Satellites Outline of Current Lecture I Saturn A Atmosphere B Properties C Magnetic Properties D Internal Structure E Satellites II Uranus III Neptune IV Pluto Current Lecture I Jupiter A Atmosphere H He and Methane Ammonia not detected Horizontal bands in the atmosphere low contrast due to absence of Ammonia Rotational period Differential Rotation fluid planet a 10 hrs 16 min b 10 hrs 40 min Radiates more energy than it receives from the sun due to slow contraction of planet Would float in water Density 75 D Earth B Properties Orbital Period 29 4 years Tilt of Axis of Rotation 26 7 degrees Mass 95 M Earth Radius 9 45 R Earth Extensive Ring System a Cassini Division b Braided Ring Magnetic Influence c Shepard Satellites C Magnetic Properties Mag Field Saturn 0 67 x Mag field of Earth Tilt of Mag Axis 9 6 degrees Radiation belts are depleted due to rings D Internal Structure Core Metallic Hydrogen Molecular Hydrogen Mush Hydrogen Helium atmosphere E Galilean Satellites Titan a Largest moon of Saturn b Nitrogen rich atmosphere c Ionosphere II Mimas Has large crater on surface near the size necessary to disrupt this moon Iapetus Two hemisphere have extremely different albedos one is highly reflective the other is covered with soot like material Tethys and Dione Cratered cracked surface with evidence of some Maria icy flooding activity Enceladus Bright shiny surface likely has water ice volcanoes on its surface Uranus Mass 14 5 M Earth Rotational Period 0 72 days Axial tilt 98 degrees Magnetic field 74 M Earth Tilt of Mag Axis 58 6 degrees Perhaps reversing Atmosphere H He Methane a No internal heat source b High velocity 200 500Km hr Rings Nine thin rings Shepard moons all in Equatorial plane Satellites 17 a Oberon Titania Heavily cratered dirty icy surface b Umbriel Darkest one bright spot unexplained c Ariel Resurfacing Cracks due



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