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The North Star

Polaris. The North Star. Who discovered Polaris?. Polaris was discovered by astronomer William Herschel in the year 1780. Apparent and Absolute Magnitude.

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The North Star

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  1. Polaris The North Star

  2. Who discovered Polaris? Polaris was discovered by astronomer William Herschel in the year 1780.

  3. Apparent and Absolute Magnitude • Apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere • Polaris has an apparent magnitude of 1.97v • Absolute magnitude is the measure of a celestial object's intrinsic brightness • Its absolute magnitude is -3.64

  4. Distance From Earth How far away is Polaris? Astronomers estimate Polaris’ distance at 430 light-years Which means it must be pretty bright!

  5. What color is Polaris? •  white and slightly yellowish Polaris

  6. How hot is it on Polaris? Surface temperature The surface temperature of Polaris is 7200 degrees Kelvin. That is the equivalent of 12500.33 degrees Fahrenheit. It is also comparable to 6926.85 Celcius

  7. Where can I find Polaris? Polaris is located in the constellation of Ursa Minor, the Little Bear. The best way to find your way to Polaris is to use the so-called “Pointer” stars in the bowl of the Big Dipper, Dubhe and Merak.  Just draw a line, between these two stars and extend it out about 5 times, and you eventually will arrive in the vicinity of Polaris.

  8. What kind of star is Polaris? • Polaris is a hot, blue bright giant star. More specifically it is a Cepheid Variable star, which means that it is a pulsating variable star that pulsates with a period of almost four days.

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