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How big is the northern star?

In: Astronomy, Planetary Science, Constellations [Edit categories]

Answer:

Polaris, our North Star, is about 460 light years away, and appears to us to be second magnitude, although it is increasing in brightness at one of the fastest rates of any known star (it is much brighter today than when observed by Ptolemy about 150 AD). Polaris itself is a white star about 6 times the mass of our sun, with two small companion stars, one close, one farther out. The farther out companion can be seen with any small telescope.

First answer by Melos Antropon. Last edit by Melos Antropon. Contributor trust: 188 [recommend contributor ]. Question popularity: 4 [recommend question].

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