The designations of the two components as Eta Draconis A and B derives from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).
The designations of the two components as Eta Draconis A and B are based on the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, which was also adopted by the International Astronomical Union (IAU).