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Sirius

Sirius. By: Michelle Confer. Characteristics. Size- Sirius is about 2.1 times the size of the sun. Diameter- Sirius is about 1.8 million miles, where as the sun is only about 870,000 miles. Temperature- Sirius is 10,000 kelvin and the sun is only 5,777 kelvin.

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Sirius

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  1. Sirius By: Michelle Confer

  2. Characteristics • Size- Sirius is about 2.1 times the size of the sun. • Diameter- Sirius is about 1.8 million miles, where as the sun is only about 870,000 miles. • Temperature- Sirius is 10,000 kelvin and the sun is only 5,777 kelvin. • Color- Sirius is white and the sun is yellow (Sirius is much hotter). • Distance from the sun (light years)- Sirius is about 8.6 light years away from the sun. Sirius A in comparison to the sun.

  3. Sirius in the H-R Diagram • Sirius a is a main sequence star.

  4. Sirius’s Contellation • Sirius is mainly known as “the dog star”, because it’s constellation forms a dog in the night sky. But the Greeks gave this constellation the name “The Scorcher”, because they bieleved it was the reason behind their very hot weather. This constellation is also known as “Canis Major”, meaning big dog in English.

  5. LifeCycle of Sirius • Sirius is a binary star (a star system with two stars in it), because Sirius has two stars in it’s system. There is a Sirius A and Sirius B. • Right now Sirius is a low mass/medium size star. • 1.Sirius was born as a nebula • 2. Then it became a low mass/medium sized protostar. • 3.Then it went into what it is now; a low mass/medium size star. • 4. Next it will become a red giant, then a planetary nebula. • 5. After this it becomes a white dwarf. • 6. Then finally it becomes black dwarf and dies off.

  6. Works Cited

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