Asteroids & Impact 2010. What is an asteroid? Small, rocky object orbiting the Sun among other planets. Commonly called planetoids because they are considerably.

Slides:



Advertisements
Similar presentations
Chapter 14: Solar System Debris Asteroids What Killed the Dinosaurs? 14.2 Comets 14.3 Beyond Neptune 14.4 Meteoroids Units of Chapter 14.
Advertisements

Unit 2 Lesson 6 Small Bodies in the Solar System
7.5 Other Objects In the Solar System (Pages ) Homework: Page 306 # 1, 3, 7, 8 Key Concepts: (Page 306)
Chapter 8 Vagabonds of the Solar System. What do you think? Were the asteroids a planet that was somehow destroyed? How far apart are the asteroids on.
Origin of the Solar System GCSE ScienceChapter 12.
Asteroids Astronomy 311 Professor Lee Carkner Lecture 15.
Asteroids & Meteors Lectures will be available at: homework.uoregon.edu/pub/elsa/haydock/
Asteroids Astronomy 311 Professor Lee Carkner Lecture 15.
3B Solar System Debris Asteroids, Comets, Meteors, Oh My!
Our Solar System.
How did the Solar System form? 3. What are the broad general characteristics or physical features of our Solar System and how do they illuminate Solar.
National College Iasi Near Space Objects. National College Iasi Learn about NEOs Near-Earth Objects (NEOs) are comets, meteorids and asteroids that have.
Chapter 8, Astronomy. Identify planets by observing their movement against background stars. Explain that the solar system consists of many bodies held.
UNIT NINE: Matter and Motion in the Universe  Chapter 26 The Solar System  Chapter 27 Stars  Chapter 28 Exploring the Universe.
Asteroids. Asteroids are rocky and metallic objects that orbit the Sun but are too small to be considered planets. They are known as minor planets. Asteroids.
Solar System Debris. Asteroids Asteroids are relatively small. Most have eccentric orbits in the asteroid belt between Mars and Jupiter.
Asteroids updated july 19, Titius-Bode Law (1766) The distances between the planets gets bigger as you go out. Titius & Bode came up with a law.
Asteroids (minor planets) Bode’s Law suggests a planet between Mars and Jup. at 2.8 AU: –1801 – Piazzi (It.) discovers Ceres –1804 – Juno disc. –1807 –
The Launch Pad Monday, 9/20/10 Identify  We will have a test this Friday.
Asteroids Asteroid (“star-like”) = rocky or metallic bodies orbiting the sun. Most located in orbit between Mars and Jupiter Size ranges from a few meters.
Welcome to the Party! Why are we here? Celebrate the beginning of Dawn's year-long exploration of new worlds! Share in the excitement as we see something.
Space Asteroids Raynaldo 6B.
Asteroids updated May 16, Titius-Bode Law (1766) The distances between the planets gets bigger as you go out. Titius & Bode came up with a law that.
Our Solar System… 4 terrestrial planets…(M,V,E,M) then a big asteroid belt… 4 gas giant planets…(J,S,U,N) and Pluto, an ice dwarf.
ASTEROIDS By Melissa Goschie.
Most meteorites that fall on Earth are fragments of broken-up asteroids which orbit the Sun mostly between the orbits of Mars and Jupiter. This is indicated.
The facts about Planets.. I have listed the planets in order from the closest to furthest from the sun Planet Facts. Read some really neat facts about.
Asteroids Astronomy 311 Professor Lee Carkner Lecture 15.
is an ASTEROID What is an ASTEROID Asteroids are the rocky remnants of the material from which the planets formed. They have also been called planetoids,
Asteroids & Meteorites 20 October Asteroids Apollo Trojans.
Asteroids, Comets, and Meteoroids Asteroids are small, rocky objects. The name “asteroid” actually means ‘star-like bodies’.
Dwarf Planets According to IAU (International Astronomical Union), a "dwarf planet" is a celestial body that 1) is in orbit around the Sun, 2) has sufficient.
The Sun & The Solar System. Structure of the Sun The Sun has layers which can be compared to the Earth’s core, mantle, crust, and atmosphere All of these.
Asteroids are balls of rock a few feet to several miles in diameter. The are not large enough to be considered planets.. The total mass of all asteroids.
Asteroids Irregular (sometimes spherical) lumps of rock and metal that had never formed into planets during the formation of the solar system Several hundred.
Solar System Note: My beautiful PPT that I showed in class is too big to post on SWIFT so I put all the info on here. Bring your posters finished on Monday!
Don’t flush it all away. Get your missing, late or work you want redone turned in. Only 15 days remaining. Due 12/20/13.
Asteroids. Asteroid Belt What is an Asteroid? A large, irregularly shaped chunk or rock or metal that orbits the sun.
Asteroids,, Comets, and Meteoroids Chapter 5. Bode’s Law In 1772 Johann Bode, a German astronomer, created a mathematical formula now called Bode’s Law.
Asteroids.
THE SOLAR SYSTEM. BODIES IN THE SOLAR SYSTEM Our planet, Earth, is part of a system of planets that orbit a star, the sun. The solar system is comprised.
Other Solar System Bodies next right hand side Key Point (8-4.1): Summarize the characteristics and movements of objects in the solar system.
 An asteroid is any of numerous small planetary bodies that revolve around the sun. Asteroids are also called minor planets or planetoids. Most of the.
Bell Ringer 2/19/16 1.Which astronomer developed the “Law of Universal Gravitation”? 2.What causes planets and other space objects to revolve around the.
Comets, Meteors, and Asteroids. Comets  The word "comet" comes from the Greek word for "hair.”  Our ancestors thought comets were stars with what looked.
UNIT 4: MEMBERS OF THE SOLAR SYSTEM PART IV: VAGABONDS OF THE SOLAR SYSTEM.
The Planets 7.3. What are some of the objects that make up our solar system? Planets Moons The Sun Comets Asteroids Stars.
The Solar System: An Insider’s Guide Friday! What Lies Beyond? Small Bodies and Extrasolar Planets.
Unit 2 Lesson 6 Small Bodies in the Solar System
Asteriods.
Asteroids.
Asteroids By: Braxton and Jontae.
The Solar System The Sun and the Planets.
What kinds of objects are in the solar system?
The Solar System – An overview
minor members of the solar system
Our Solar System… 4 terrestrial planets… (M,V,E,M)
Asteroids, Comets, and Meteoroids
Radiometrc Dating and Aging our Solar System
Asteroids, Asteroid Belt, and Dwarf Planets
Spacecraft Study of Asteroids
Asteroids.
Asteroids Lab 10.
Asteroids.
Asteroids, or Minor Planets
Dwarf Planets and Other Objects
Asteroids, or Minor Planets
2/19/18 - POD FIRST, submit PODs in the black trays. Then, start a new page for PODS. POD #1 - Asteroids are made up of similar components that make.
METEORITE INVESTIGATORS
Asteroids, or Minor Planets
Presentation transcript:

Asteroids & Impact 2010

What is an asteroid? Small, rocky object orbiting the Sun among other planets. Commonly called planetoids because they are considerably smaller than actual planets. Estimated amount of asteroids in our solar system –1,000,000 total

What are asteroids made of and how big are they? Fe and Ni Vary in size and shape, but can be up to 940 miles in diameter.

Who was the first to discover one? Father Giuseppi Piazzi Ceres, largest asteroid (940 km dia.) and first to be discovered. Discovered on January 1, 1801 *Discoverers name their asteroids

Ceres: size comparison

What are some cool asteroids? Vesta- the brightest asteroid Ceres- largest Ida- potato shaped and has a moon named Dactyl Pholus-covered in red, possibly organic, material Trojan Asteroids- orbit Jupiter, one group in front, one group behind

Ida (35X15 miles) and Dactyl

Are there different types of asteroids? Metal or M-class Similar to a core of a planet; made up of 5- 50% Ni and Fe.

Types…2 S-class: silica/Stony-Iron Metal/igneous rock; similar to mantle of a planet Two types: medosiderite and pallasite Pallasite has olivine crystals

Types…3 C-class: carbon Similar to crust of a planet; made of sand with Fe-Ni bits; grains are in irregular lumps called chondrules Achondrite: a chondrite that’s been reheated and lacks chondrules

Identify this asteroid:

Where can asteroids be found? Between Mars and Jupiter in the Asteroid Belt.

Radar image of view from 4179 Toutatis (travels 70,000 mph, often crosses Earth’s path)

How was the belt found? Johann Bode and Johann Titus determined a law giving the approximate distance of the planets from the Sun in Not a true law of relationships Pattern was used to find a planet between Mars and Jupiter, but found the asteroid belt.

What are Apollo Objects/NEO’s/PHA’s? Apollo Objects- about 40, all cross Earth’s orbit & have very elliptical orbits. Near Earth Objects- about 2,000 total which are greater than 1km in diameter PHA’s-Potentially Hazardous Asteroids *Concerned about these impacting Earth

NEO Orbits

Trojan Asteroids orbit with Jupiter (in green color)

“The blue area shows all near-Earth asteroids while the red area shows only large near-Earth asteroids. In this context, "large" is defined as an asteroid having an absolute magnitude (H) of 18.0 or brighter which roughly corresponds to diameters of 1 km or larger.”

Can I discover an asteroid? Unless you have access to the Hubble Telescope, LINEAR, Arecibo Radio Telescope, or an extremely expensive telescope of your own, your chances are slim.

What is LINEAR? LINEAR- Lincoln Near Earth Asteroid Research Project Detects asteroids; has ability to monitor and calculate future asteroid paths Helpful in case Earth might have to deflect any asteroids on a collision path

What is the Arecibo Radio Telescope? Radio telescope Uses radar to determine asteroid sizes, shapes and orbits Detect future impacts Can also map planets in our solar system

Arecibo Radio Telescope, PR

Is there a chance of future impact? There are numerous possibilities, but so far most of the NEO’s have come close enough without getting into Earth’s orbit If a large one were to enter Earth’s orbit, it would look like …

…this!

Or this!

How about this?

Any recent encounters? March 2002, 60 meter diameter asteroid came within 288,000 miles of Earth Wasn’t detected until 4 days later because it was coming from the direction of our Sun. June 2002, a 100-meter asteroid (2002MN) came within 75,000 miles—once again, undetected until 3 days later *largest asteroid to approach that close

Spaceguard Survey The term is from an Arthur C. Clarke novel The goal is to discover 90% of the Near Earth Objects that are 1km diameter or more. Global efforts being made Deflection strategies also being planned

Interesting facts Every asteroid in the Asteroid Belt put together would amount to less mass than Earth’s Moon Vesta can be seen with the naked eye NEAR Shoemaker landed on asteroid Eros, after orbiting for a year