What is the apparent brightness of Merak?

The apparent brightness of a star is measured by its magnitude, which quantifies how bright the star appears from Earth. Merak, also known as Beta Ursae Majoris, is a significant star in the constellation Ursa Major and exhibits an apparent brightness of 2.37. This value reflects its visibility and luminosity as perceived from our planet.

The apparent magnitude scale is logarithmic, meaning that a decrease in the numeric value indicates a brighter star. Therefore, Merak's apparent brightness, positioned at 2.37, indicates that it is relatively bright and easily visible to the naked eye in clear conditions.

In the context of this question, the other values listed represent different brightness magnitudes, but only 2.37 accurately represents how bright Merak appears from our perspective on Earth. Understanding this concept allows for a clearer grasp of stellar brightness as it pertains to observational astronomy.