About 9 Cyg
9 Cyg is a common star. It lies about 558.5 light-years from Earth, sits in the constellation Cyg, shines at apparent magnitude 5.39 and has spectral type A0V+....
Its spectrum reads A0V+... — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.