Complex sentence: Another binary system is located at an angular separation of 69 arcseconds from δ Velorum, sometimes referred to as δ Velorum C and D. The pair is composed of an 11th magnitude star and a 13th magnitude star, which are 6 arcseconds apart.
Split into simpler sentences: Another binary system is located at an angular separation of 69 arcseconds from δ Velorum. It is composed of an 11th magnitude and 13th magnitude pair, which are 6 arcseconds apart.