This is a spectroscopic binary with an orbital period of and an eccentricity of 0.19. A binary companion was first suspected in 1960, as the spectrum was considered to be composite and there is an ultraviolet excess. The companion was confirmed in 1982, and it was resolved using long baseline interferometry in 2014 and 2015. The system has an a sin i value of , where a is the semimajor axis and i is the (unknown) orbital inclination.
