About HD 220757
HD 220757 is a trash star. It lies about 501 light-years from Earth, sits in the constellation Tuc, shines at apparent magnitude 7.13 and has spectral type K3IIICN....
Its spectrum reads K3IIICN... — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.