Minor Bodies of the Solar System Chapter 7. Kepler’s Laws 1. Planets orbit the sun in elliptical...
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Transcript of Minor Bodies of the Solar System Chapter 7. Kepler’s Laws 1. Planets orbit the sun in elliptical...
Minor Bodies of the Solar Minor Bodies of the Solar SystemSystem
Chapter 7Chapter 7
Kepler’s LawsKepler’s Laws
• 1. Planets orbit the sun in elliptical orbits with the sun at one focus of the ellipse
Keper’s Second LawKeper’s Second Law
• As a planet moves in its orbit, a line connecting the planet to the sun sweeps out equal areas in equal times
Kepler’s Third LawKepler’s Third Law
• P2 = a3
(provided the period is in Earth years and the semi-major axis in astronomical units)
The Main Asteroid BeltThe Main Asteroid Belt
Ceres: Largest Main Belt AsteroidsCeres: Largest Main Belt Asteroids
Gaspra and Ida (and Dactyl)Gaspra and Ida (and Dactyl)
Mathilde and ErosMathilde and Eros
NEAR close-ups of ErosNEAR close-ups of Eros
Resonances in the Asteroid BeltResonances in the Asteroid Belt
Main Asteroid TypesMain Asteroid Types
• C type: carbonaceous, low albedo
• S type: stony or stony-metallic, redder
• E type: high albedo, magnesium silicate
• D type: very dark and red
• M type: mostly iron and nickel
• E, S, and M types may be fragments from a larger body that underwent differentiation
Asteroid Light CurvesAsteroid Light Curves
• Antigone
Kuiper Belt and Oort CloudKuiper Belt and Oort Cloud
Pluto: Planet or Kuiper Belt ObjectPluto: Planet or Kuiper Belt Object
PlutoPluto
SednaSedna
Comets: Dirty SnowballsComets: Dirty Snowballs
SOHO CometsSOHO Comets
Comets Hyakutake and Hale-BoppComets Hyakutake and Hale-Bopp
Impact with Comet Tempel 1 at 23,000 mph on July 4, 2005Impact with Comet Tempel 1 at 23,000 mph on July 4, 2005
Shoemaker Levy 9Shoemaker Levy 9
Hits Jupiter July 1994Hits Jupiter July 1994
Meteors and MeteoritesMeteors and Meteorites
Meteor ShowersMeteor Showers