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Lecture

AST101-Chapter 7&9.txt

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Department
Astronomy
Course
AST101H5
Professor
John Lester
Semester
Fall

Description
Chapter 9 Asteroids Comets and Dwarf PlanetsSolar Systems Smaller Objects1 Solar System has many objects smaller than the major planets1 asteroidsalso called minor planets2 meteoroids 3 comets4 dwarf planets since 2006What are Asteroids1 Aster staroid bodyan object that looks like a star but it orbits the Sun1 largest now known1000 km in diameter2 smallest detectable100m3 more than 400000 asteroids have been catalogued but many more have been detected4 there are probably more than 1 million asteroids larger than 1kmWhere are the Asteroids1 Most asteroids orbit between Mars and Jupitermain asteroid belt2 Jupiters powerful gravity controls the spacing of these orbits3 Also some asteroids are in Jupiters orbit4 Located ahead of or following Jupiter5 These are captured by gravity of JupiterSun6 A few asteroids h
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