About HD 3815
HD 3815 is a trash star. It lies about 567.2 light-years from Earth, sits in the constellation Tuc, shines at apparent magnitude 8.68 and has spectral type K2/K3III.
Its spectrum reads K2/K3III — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.