Beta Ursae Majoris (β UMa / β Ursae Majoris) is a star in the constellation of Ursa Major. It has the traditional name Merak.
It is more familiar to northern hemisphere observers as one of the "pointer stars" in the Big Dipper, and a line connecting it with nearby Alpha Ursae Majoris (Dubhe) extends to Polaris, the north star. It is also one of the five stars in the Big Dipper asterism that form a part of a loose open cluster called the Ursa Majo...
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Beta Ursae Majoris (β UMa / β Ursae Majoris) is a star in the constellation of Ursa Major. It has the traditional name Merak.
It is more familiar to northern hemisphere observers as one of the "pointer stars" in the Big Dipper, and a line connecting it with nearby Alpha Ursae Majoris (Dubhe) extends to Polaris, the north star. It is also one of the five stars in the Big Dipper asterism that form a part of a loose open cluster called the Ursa Major moving group, sharing the same area of space and not just the same patch of sky by our perspective.
Merak is fairly typical for a main sequence star of its type, although being slightly hotter and larger than our own Sun, it shines several times brighter than our home star. It is distinguished in the fact that evidence shows the star is surrounded by a cooling disk of dust, much like those discovered around Fomalhaut and most notably Vega. No planets have been discovered orbiting Merak, but the presence of the dust indicates they may exist...
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