T Tauri
The system has three stars: T Tauri North (T Tau N), T Tauri South A (T Tau Sa), and T Tauri South B (T Tau Sb). T Tau N is estimated to be approximately 300 AU away from the southern binary, with the separation of the binary believed to be approximately 7 AU with an orbital period of 27.2±0.7 years. The orbit of T Tau N about the southern binary is poorly constrained, with the period ranging from 400 years to 14,000 years as of 2020. T Tau N has a mass of ~, T Tau Sa is estimated to be , and T Tau Sb is estimated to be approximately .