Tags: Star.
Beta Monocerotis (Beta Mon β Monocerotis β Mon) is a triple star system in the constellation of Monoceros. To the naked eye it appears as a single star with an apparent visual magnitude of approximately 3.74 making it the brightest visible star in the constellation. A telescope shows a curved line of three pale blue stars (or pale yellow stars depending on your scope’s focus). The star system consists of three Be stars β Monocerotis A β Monocerotis B and β Monocerotis C.