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Asteroids .docx

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Department
Astronomy
Course
CAS AS 101
Professor
Paul Withers
Semester
Fall

Description
AS 101: ASTEROIDS 1 The rocky bits of chapter 12 Questions of the day: • What are asteroid orbits like? • What are asteroids like? • How are meteorites and asteroids connected? Asteroids: • Stars don’t move as fast as asteroids  • The first asteroids was discovered 200 years ago • Took 50 years to discover 10 of them • 150,000 asteroids known today  • Typical distance between asteroids are millions of km • Collisions are rare, but they do occur • Trojan asteroids – Share an orbit with Jupiter  • Some have orbits that pass near Earth  • No gaps visible in belt Asteroid Locations: • There are very few asteroids in the orbit of Mars.  • There are very few asteroids outside about 3.5 AU from the sun.  • The inner boundary of the asteroid belt is very close to the orbit of Mars when the  outer boundary is much farther from orbit of Jupiter.  •  Gap  appear if we arrange as
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