61 Cygni planet. Computer artwork of a hypotheti- cal planet orbiting one of the stars in the 61 Cygni binary star system. 61 Cygni is a double star lying just over 11 light years away in the constellation Cygnus, comprising two orange dwarf stars. The star this planet is orbiting is out of frame at bottom, with the companion star at centre left. The planet has liquid water at one of its poles (far right), and has several small moons.