How old is polaris?

Answer 1

As with a lot of astronomical objects, defining their age is just not possible.

Because of it's type, it could be about 4 billion years old, and has about another 2 billion years left, but these are just guesses based on it's spectral type.

Answer 2

Better telescopes show that "Polaris" is actually several stars, but the one you must have in mind is a supergiant, so its lifespan will be short, perhaps as little as another million years.

The one worth watching is Arcturus, not too far away (angularly); it should go supernova in the next 5-10,000 years. Could be tonight.

Answer 3

Polaris, also known as the North Star, is estimated to be around 4.5 billion years old, slightly younger than the Sun. It is a yellow supergiant star in the constellation Ursa Minor.