Study of 95 binaries closer than 18pc from the Sun

We test whether or not the orbital poles of the systems in the solar neighbourhood are isotropically distributed on the celestial sphere. The problem is plagued by the ambiguity...本研究旨在检验太阳邻域（solar neighbourhood）内各天体系统的轨道极（orbital pole）是否在天球（celestial sphere）上呈各向同性分布。该研究问题饱受歧义性的困扰。