eris jonathan ryan cooper corrected

14
ERIS A DWARF PLANET By Jonathan Ryan Cooper

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Page 1: Eris    Jonathan  Ryan  Cooper Corrected

ERIS A DWARF PLANET

By

Jonathan Ryan Cooper

Page 2: Eris    Jonathan  Ryan  Cooper Corrected

What is a Dwarf Planet?What is a Dwarf Planet? A dwarf planet is a celestial body which meets the

following four criteria:

• It must orbit the SunIt must orbit the Sun • It must have sufficient mass that its It must have sufficient mass that its

gravity causes it to be round or gravity causes it to be round or almost round in shape almost round in shape

• It must not be another object's It must not be another object's satellitesatellite

• It must not have cleared the It must not have cleared the neighborhood around its orbitneighborhood around its orbit

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The Dwarf PlanetsThe Dwarf Planets

PLUTOPLUTOCHARONCHARONCERESCERESERISERIS

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PLUTO

USED TO BE

A

PLANET…PLANET…

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Why is Pluto NOT a planet?Why is Pluto NOT a planet?In August 2006, the IAU (International Astronomical Union) voted

on a definition of planet:

1. Must be spherical from its own gravity

2. Must be in orbit around the sun (not around another planet)

3. Must have cleared its orbital path of debris

Pluto met the first 2 criteria, but did not meet the Third. Pluto's orbit takes it into the Kuiper Belt, which has thousands of small objects (debris). If Pluto were discovered today, no one would

even consider calling it a planet because it's clearly a Kuiper-belt object.

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Charon – Double Dwarf PlanetCharon – Double Dwarf Planet

Pluto has 3 moons. Pluto has 3 moons.

Two of them are tiny. Two of them are tiny.

They are called Nix and Hydra. They are called Nix and Hydra.

The other moon is called Charon. The other moon is called Charon.

It is much larger than the others. It is much larger than the others.

Charon and Pluto circle around each Charon and Pluto circle around each other locked by gravity. other locked by gravity.

Some Scientists call Some Scientists call

Pluto and Charon Pluto and Charon

““Double Dwarf Planets”.Double Dwarf Planets”.

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CeresCeresCeres, is the smallest dwarf planet in the Solar

System. It is the only one located in the main asteroid belt.

Ceres is only the size of TEXAS!

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Eris the Largest Dwarf Planetthe Largest Dwarf Planet

Eris is a dwarf planet which lies at the edge of our solar system. Eris is a dwarf planet which lies at the edge of our solar system. Eris has one moon name Dysnomia.Eris has one moon name Dysnomia.

◄ ◄ This is ErisThis is Eris

◄ ◄ This is Dysnomia, Eris’ moonThis is Dysnomia, Eris’ moon

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Facts About ErisFacts About Eris Eris is the most recently Eris is the most recently

discovered Dwarf Planetdiscovered Dwarf Planet

Eris is the most distant Eris is the most distant object discovered so far in object discovered so far in our solar systemour solar system

At the farthest point of its At the farthest point of its orbit, Eris is almost 10 orbit, Eris is almost 10 billion miles away from the billion miles away from the sunsun

It takes eris 557 years to It takes eris 557 years to complete its orbit around complete its orbit around the sunthe sun

Photograph of erisPhotograph of eris

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More Facts About More Facts About ErisEris Eris was first detected in Eris was first detected in

October 2003October 2003

Eris is a little larger than Eris is a little larger than plutopluto

Eris is the largest of the Eris is the largest of the dwarf planetsdwarf planets

Eris has one moon, named Eris has one moon, named DysnomiaDysnomia

Eris’ nickname was XenaEris’ nickname was Xena

The temperature on Eris is -The temperature on Eris is -230 C230 C

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Eris’ OrbitEris’ Orbit

The picture below shows the orbit of Pluto and Eris.The picture below shows the orbit of Pluto and Eris.

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ReviewReview of Erisof Eris1.1. What are the 4 Dwarf Planets?What are the 4 Dwarf Planets?

They are Pluto, Charon, Ceres and Eris.

2. What is the biggest dwarf planet?2. What is the biggest dwarf planet?

The biggest dwarf planet is Eris.

3. How far is Eris at the farthest point of its orbit?3. How far is Eris at the farthest point of its orbit?

Eris is ten billion miles from our sun.

4. How long is Eris orbit?4. How long is Eris orbit?

Eris orbit is 557 earth years.

5. What is the name of Eris’ moon?5. What is the name of Eris’ moon?

Eris’ moon is named Dysnomia.

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