About HR 3099
HR 3099 is a rare variable star. It lies about 1,113.2 light-years from Earth, sits in the constellation Pup, shines at apparent magnitude 6.28 and has spectral type M5/M6III.
Its spectrum reads M5/M6III — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.