Comets and Asteroid By: Jowb Borja and Alyanna Sharyce D. Aparilla

asteroids

What are Asteroids? rocky-metallic to small to be planets Planetoids (minorplanets) leftover material Solar System Asteroid Belt dangerous

Types of Asteroids (primary) M-TYPES-TYPE C-TYPE

Carbonaceous Common variety 75% of known asteroids Much darker C-TYPE en.wikipedia.org

Moderately bright Made of nickel-iron Third most common M-TYPE abyss.uoregon.edu

Second most common Moderately bright Consists of iron-magnesium Dominant Inner asteroid belt S-TYPE

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. 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. HOW ARE ASTEROIDS FORMED?

snowy dirtballs Inhabit the Oort cloud, Kuiper Belt Asteroid Belt What Are Comets ?

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

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 Formation

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 Davis.jpg

racing/posts/ racing/posts/ earth-potentially-hazardous earth-potentially-hazardous References For Asteroid