"Double double", a multiple system near Vega, in which we can distinguish two components with the naked eye. In a telescope, these components are clearly distinguishable, with magnitudes of 5.1 and 5.4 at a separation of 208". When observed with a telescope of at least 60mm aperture and higher magnification, they split into double stars (companions ε1 with magnitude 6.5 and ε2 with magnitude 5.3). The mutual separation of one pair is 2.6", and the other pair is 2.3", with orbital periods determined to be 1,166 and 585 years. They are located at distances of 162 light-years and 156 light-years.