About HD 137787
HD 137787 is a rare variable star. It lies about 3,106.2 light-years from Earth, sits in the constellation Nor, shines at apparent magnitude 8.45 and has spectral type M2/M3III.
Its spectrum reads M2/M3III — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.