About HD 103520
HD 103520 is a common star. It lies about 652.3 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 7.03 and has spectral type K0IIICN....
Its spectrum reads K0IIICN... — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.