Albireo
Albireo is the brightest star in the constellation Cygnus, also known as the Swan. Designated Beta Cygni, it is a binary star system, meaning it consists of two stars orbiting a common center of mass. What makes Albireo particularly famous is the striking visual contrast between its two main components. The primary star, Albireo A, is a vibrant orange giant. Its companion, Albireo B, appears a brilliant blue. When viewed through a telescope, this color difference is highly noticeable and is one of the most beautiful double star systems observable from Earth.
The two stars are separated by a significant distance, estimated to be around 400 astronomical units (AU),