Lecture 1-2 - Basics of our Own Backyard

L hipuploadwikimediaorgwikipediaen669kepler second

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Unformatted text preview: from that? occupies Earth Orbits l༆  Earth’s is NOT quite circular – eccentricity of 0.0167 l༆  365.25 days for a lap, 147m to 152m km either side of ellipse – perihelion and aphelion l༆  Kepler’s 2nd law: the area swept by a line between the sun and a planet remains the same over fixed period of Dme. l༆  hip://upload.wikimedia.org/wikipedia/en/6/69/Kepler- second-...
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