Starting Line

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Starting Line
1. turn in Homework 1 2. book check 3.
topic selections
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Asteroids 2003semimajor axis
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Asteroids 2003semimajor axis
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Asteroids 2009semimajor axis
Jupiter Trojan Asteroids
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Lagrangian Points
where objects feel no net force in rotating
frame gravitational force of two masses cancels
centrifugal force because of rotation 5 per two
body system Trojan asteroids at Jupiter (3000),
Mars (4), Neptune (6) small moons at Sat/Tethys
(TelestoCalypso) and Sat/Dione(HelenePolydeuces)
Earth orbiting spacecraft
SOHO
WMAP
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KBOs and Comets 2003
KBOs red classical KBOs white
Plutinos magenta scattered disk orange tri
Centaurs cyan tri unusual
COMETS solid blue sqr numbered open blue squ
others
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KBOs and Comets 2009
KBOs red classical KBOs white
Plutinos magenta scattered disk orange tri
Centaurs cyan tri unusual
COMETS solid blue sqr numbered open blue squ
others
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KBOs and Comets 2009
Plutinos/TNOs 1093 known Pluto Quaoar Ixion Varu
na Orcus Centaurs/SDOs 242 known Chiron Sedna N
essus Asbolus Eris
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TNOs/SDOs and Friends
Hydra
Nix
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Pluto Has 3 Moons!
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The New Solar System
KBO Plutino Dwarf Planet Plutoid
Eris
but wait, theres more
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The Outer Limits
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Hyakutake and Hale-Bopp
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Comet SOHO-6
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Asteroids, KBOs, Oort Cloud
Asteroid Belt Kuiper Belt Oort
Cloud Orbital a 2.1 3.3 AU 30 100 AU
50,000 AU Orbital e 0.0 0.4 medium nearly
1.0 Orbital i low medium any! Composition roc
ky rocky/icy icy/dusty
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Comet Exploration
Exploration Halley Giotto, Vega Tempel 1 Deep
Impact dropped a bullet Wild 2 Stardust
sample return
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Comet Damage
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Comet Damage
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Comet Damage Tunguska 1908
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Asteroids Bye Bye Dinosaurs

• 65 million years ago

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Game Over?
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Location, Location, Location
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Jovians Good or Bad?
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Disk Protostellar or Debris?
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Fomalhaut Planet
background star
movie
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Homework 2
Calculate the space densities in units of
objects per cubic km of Main Belt asteroids,
KBOs, and Oort Cloud comets. Assume the
following a. Asteroid Main Belt is a disk
containing 106 objects stretches from 2 AU to 3
AU and is 1 AU thick b. Kuiper Belt is a
disk containing 105 objects stretches from
30 AU to 100 AU and is 10 AU thick c. Oort
Cloud is a sphere containing 1012 objects
stretches from 20,000 AU to 100,000 AU DUE
THURSDAY, JANUARY 22