Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Lambda Scorpii is the second brightest star system in the constellation Scorpius, and one of the brightest stars in the nighttime sky. Lambda Scorpii is a multiple star with three visible components. The first, Lambda Scorpii A, is classified as a B-type subgiant. The 15th magnitude Lambda Scorpii B has a separation of 42 arcseconds from component A, while the 12th magnitude Lambda Scorpii C is 95 arcseconds from A. It is not known whether or not these components are physically associated with component A. If they both were, B would be approximately 7500 Astronomical Units and C approximately 17,000 AU from A.