About HD 172420
HD 172420 is a trash star. It lies about 462 light-years from Earth, sits in the constellation Pav, shines at apparent magnitude 8.01 and has spectral type A9/F0III.
Its spectrum reads A9/F0III — 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.