Complex sentence: Of magnitude 4.05, nearby Iota Persei has been considered a member of the group, but is actually a star very similar to our Sun, located a mere 34 light-years distant and shining with 2.2 times its luminosity.
Split into simpler sentences: Of magnitude 4.05, nearby Iota Persei has been considered a member of the group, but is actually located a mere 34 light-years distant. This star is very similar to our Sun, shining with 2.2 times its luminosity.