About HD 220400
HD 220400 is a rare star. It lies about 3,229.3 light-years from Earth, sits in the constellation Scl, shines at apparent magnitude 7.39 and has spectral type M1/M2III.
Its spectrum reads M1/M2III — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.