Beta Aquilae

Alschain (Arabic الشاهين al- Shahin, (migrant ) Falcon ') the name of the star is β Aquilae (Beta Aquilae ). Although beta usually means the second brightest star of a constellation, Alschain is only the siebenthellste star of the eagle. It has an apparent magnitude of 3.71 mag and is an orange subgiant of spectral type G8. Its distance is 45 light-years; so Alschain is a relatively nearby star. It has 1.3 times the mass of the Sun and about three times the solar radius. The phase of hydrogen burning in its core is at an end and he will "soon" a luminous red giant will. There might be slight variations in brightness of Alschain with an amplitude of about 0.05 may be detected. He is also a multiple star. Add 12.8 " distance a red dwarf of spectral type M3 and apparent magnitude of 11.4 orbits likes him. This companion is faint and has only 0.3 solar masses, but is much longer than the main component exist. A third companion of the apparent brightness of 10.5 like orbiting the central star in 175 ' away.