The system of subdwarfs G89-14 is one of the most metal-poor multiple stars with an atmospheric metal abundance \mathrm { [ m / H ] } = -1.9 . Speckle interferometry at the 6-m BTA telescope has revealed that G89-14 consists of four components . Measurements of the magnitude difference between the components and published data have allowed their masses to be estimated : M _ { A } \approx 0.67 M _ { \odot } , M _ { B } \approx 0.24 M _ { \odot } , M _ { C } \approx 0.33 M _ { \odot } , and M _ { D } \approx 0.22 M _ { \odot } . The ratio of the orbital periods of the subsystems has been obtained , 0.52 yr : 3 000 yr : 650 000 yr ( 1:5769:1250000 ) , indicative of a high degree of hierarchy of G89-14 and its internal dynamical stability . The calculated Galactic orbital elements and the low metallicity of the quadruple system suggest that it belongs to the Galactic halo .