 The star 8 Herculis forms a naked-eye pair with Kappa Herculis away.κ Herculis (Latinised to "Kappa Herculis") is the system's Bayer designation.The designations of the components as "Kappa Herculis A", "B" and "C" derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).