What kind of star is the Dubhe?

Answer 1

Alpha Ursae Majoris (α UMa / α Ursae Majoris) is the second-brightest star in the constellation of Ursa Major (despite its Bayer designation of "alpha"). It also has the traditional name Dubhe. It forms part of the Big Dipper (also known in English as the Plough or the Great Bear), and is the northern of the pointers, the two stars of Ursa Major which point towards Polaris. However, it is not part of the Ursa Major moving group. Instead, it is an evolved helium-burning star, about 124 light years away. It is a multiple star, orbited by a main sequence companion, Dubhe B, at a distance of about 23 astronomical units (AU), as well as a close pair, Dubhe C, at a distance of about 8000 AU. The traditional name comes from the Arabic for "bear", dubb, from the phrase ظهر الدب الاكبر‎żahr ad-dubb al-akbar "the back of the Greater Bear".

Answer 2

Dubhe is a binary star system located in the constellation Ursa Major. The brighter star, Dubhe A, is a giant star with a spectral classification of K0III. The companion star, Dubhe B, is a magnitude 8.5 star that is roughly ten times fainter than Dubhe A.

Answer 3

Dubhe is part of the constellation called Ursa Major. It is classified as a yellow giant and is the 37th brightest star in Earth's galaxy.

Answer 4

The spectral classification for Dubhe is K0III, but it also has a companion star (with 0.4 times the mass) which is classified as F0V.