Comets and Asteroid
By: Jowb Borja and Alyanna Sharyce D. Aparilla
asteroids
http://waitingforison.wordpress.com
What are Asteroids?
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rocky-metallic
to small to be planets
Planetoids (minorplanets)
leftover material
Solar System
Asteroid Belt
dangerous
Types of Asteroids (primary)
M-TYPE
C-TYPE
S-TYPE
C-TYPE
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Carbonaceous
Common variety
75% of known asteroids
Much darker
en.wikipedia.org
M-TYPE
• Moderately bright
• Made of nickel-iron
• Third most common
abyss.uoregon.edu
S-TYPE
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Second most common
Moderately bright
Consists of iron-magnesium
Dominant
Inner asteroid belt
http://en.wikipedia.org
HOW ARE ASTEROIDS FORMED?
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leftovers
formation of solar system
birth of Jupiter
Prevented planetary bodies
from forming
gap between Mars and Jupiter
Causing small objects
collide with each other
fragment into the asteroids seen today.
What Are Comets ?
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snowy dirtballs
Inhabit the Oort cloud,
Kuiper Belt
Asteroid Belt
Physical characteristics
- Solid nucleus consist
-ice (frozen water)
- dust coated with dark organic material
- ammonia
- carbon dioxide
- carbon monoxide
- methane
• Coma
• Dust tail
• Ion tail
Formation
• material left over from formation of planets
• solar wind pushed remains into the outer
region
• remained to form lumps of frozen gas and
dust.
• temperature :cold enough
Orbital Characteristics
•Elliptical Orbit
•Perihelion
•Kepler’s Law
•Main Belt comets
• Short Period comets (periodic comets)
• Long Period comets
• Single apparition comets
• Sun grazers
Main Belt comets
Comets in the Asteroid belt
Short period comets (Periodic Comets)
•1 orbit takes 200 yrs or less
• originate from kuiper’s belt
• active comets dragged by the gravitational
interactions with inner planets
Long Period comets
• 1 orbit takes 200 yrs or more
• originate from Oort cloud
• get slung inward by gravitational pull of passing
stars
Single apparition comets
Comets that are not bound to the sun
Sun grazers
Comets that smash into the sun
Naming
Named after their discoverer
History
• Thought to be traveling the earths atmospere
• 1577 astronomer Tycho Brahe revealed that comets
travels far beyond the moon
• Isaac newton
a. comets orbit around the sun
b. predicted it will return again and again
Reference For Comets
http://hubblesite.org/reference_desk/faq/answer.php.id=17&cat=solarsystem
http://www.space.com/53-comets-formation-discovery-and-exploration.html
http://cse.ssl.berkeley.edu/segwayed/lessons/cometstale/images/orbit.gif
http://upload.wikimedia.org/wikipedia/commons/2/2b/Tycho_Brahe.JPG
http://mrnussbaum.com/images/isaac_newton.jpg
http://apod.nasa.gov/apod/image/0903/sungrazer_soho.jpg
http://d366w3m5tf0813.cloudfront.net/wp-content/uploads/Oort-Cloud-DonDavis.jpg
http://img.docstoccdn.com/thumb/orig/126651312.png
http://spaceplace.nasa.gov/review/ice-dwarf/solar-system-lrg.png
References For Asteroid
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http://en.wikipedia.org/wiki/S-type_asteroid
http://en.wikipedia.org/wiki/C-type_asteroid
http://en.wikipedia.org/wiki/M-type_asteroid
http://coolcosmos.ipac.caltech.edu/ask/184-What-are-asteroidshttps://www.kickstarter.com/projects/1614576398/solar-circuitracing/posts/168785
http://waitingforison.wordpress.com/updates-september-2013/
http://abyss.uoregon.edu/~js/ast121/lectures/lec18.html
http://www.theguardian.com/science/2014/feb/17/asteroid-2000-em26-fly-closeearth-potentially-hazardous
http://www.myfreewallpapers.net/starwars/pages/asteroids-ring.shtml
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http://quoteko.com/asteroid-impact-fiction.html
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