10 facts about the Polaris

Polaris Star Facts, Polaris Astronomy, Polaris The North Star Facts, Facts About Ursa Minor, Ursa Minor Facts, Surface Temperature Of Polaris.

Astronomy Science ~ Polaris (α Umi / α Ursae Minoris / Alpha Ursae Minoris, sometimes referred to as the North Star or Pole Star) is the brightest star in the constellation Ursa Minor.

Search Terms: Polaris Star Facts, Polaris Astronomy, Polaris The North Star Facts, Facts About Ursa Minor, Ursa Minor Facts, Surface Temperature Of Polaris.

And here are some interesting facts about the star Polaris

1. Polaris is about 430 light years from Earth and the brightest star in the constellation Ursa Minor.

2. Polaris is a three-star system consisting of a yellow supergiant Polaris Aa and two companions were smaller.

3. The companion star called Polaris Ab and B. Both stars are main sequence yellow-white, with surface temperatures similar to their giant neighbor.

4. Polaris Ab is about 2 billion miles (3.2 billion km) from Aa Polaris, and Polaris B orbiting at a distance of approximately 240 billion miles (389 billion km) from Polaris Aa.

Polaris image by Hubble telescope
Polaris image by Hubble telescope
Search Terms: Polaris Star Facts, Polaris Astronomy, Polaris The North Star Facts, Facts About Ursa Minor, Ursa Minor Facts, Surface Temperature Of Polaris.5. Now discovered two distant stars associated with Polaris, the invention makes Polaris into the 5 star system Aa Polaris (α Umi Aa), Polaris Ab (α Umi Ab), Polaris B (α Umi B), Polaris C ( α Umi C) and Polaris D (α Umi D).

6. Polaris is the only star in the night sky that appear and remain silent in place, this is because at this time, the star is above the northern axis of rotation of the earth.

7. Because the star is always pointing north, Polaris helped navigators for centuries, although it is only visible in the northern hemisphere.

8. Polaris has aligned over the North Pole in a span of about 2,000 years, but after 2100 years, Earth's northern axis will begin to move away from the Polaris.

9. Polaris Aa is a yellow supergiant star with a radius of about 22 million miles (35 million km), which is about fifty times the radius of the sun.

Search Terms: Polaris Star Facts, Polaris Astronomy, Polaris The North Star Facts, Facts About Ursa Minor, Ursa Minor Facts, Surface Temperature Of Polaris.

10. Polaris Aa estimated have a mass of about 4.5 times greater than the mass of the sun. And the surface temperature of about 5700 C (10,300 F), which is similar to the sun's surface temperature. Because Polaris Aa surface area larger than the Sun, it has a luminosity about 2,500 times larger than our sun.
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Astronomy Science: 10 facts about the Polaris
10 facts about the Polaris
Polaris Star Facts, Polaris Astronomy, Polaris The North Star Facts, Facts About Ursa Minor, Ursa Minor Facts, Surface Temperature Of Polaris.
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