About HD 169757
HD 169757 is an uncommon star. It lies about 597.4 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 8.04 and has spectral type A3III/IV.
Its spectrum reads A3III/IV — 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.