About GL GJ 1239
GL GJ 1239 is a common star. It lies about 68.5 light-years from Earth, sits in the constellation Sgr, shines at apparent magnitude 8.69 and has spectral type K3/K4V.
Its spectrum reads K3/K4V — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.