Pollux (star)

Pollux is a red giant star. It is the brightest star in the Gemini constellation. It's diameter is . Once a type A star, Pollux has used all the hydrogen in its core and expanded to become a K-type giant star.

It is located at a distance of 34 light years, which makes it the closest giant star to the Sun. In 2006, an extrasolar planet (designated Pollux b, formally named Thestias) was confirmed to be orbiting the star at a distance of 1.64 AU in nearly a circular orbit.

References

Category:Red giants