In this work, the orbital elements are improved and the total masses of the three close visual binary systems CVBSs: HIP 11352, HIP 70973, and HIP 72479 are precisely calculated. The calculations were performed based on an assessment of the latest Gaia DR2 and Hipparcos trigonometric parallax measurements. The morphology and kinematics of orbits are fitted to the observational data available in the Fourth Catalogue of Interferometric Measurements of Binary Stars, and compared with the earlier orbits published in the Sixth Catalog of Orbits of Visual Binary Stars. The computation of orbital elements allows the determination and estimation of the mass sums for the three systems as: 1.81 ± 0.17 M_⊙, 1.83 ± 0.07 M_⊙, and 1.61 ± 0.26 M_⊙ for HIP 11352, HIP 70973, and HIP 72479 respectively. This suggests that these systems belong to the main sequence stars for both components. This will provide valuable insights into the evolution paths of these systems.

在这项工作中，改进了轨道元素，并精确计算了三个紧密视觉二进制系统CVBS的总质量：HIP 11352，HIP 70973和HIP 72479。基于对最新Gaia DR2和Hipparcos三角视差测量的评估来执行计算。轨道的形态学和运动学适合于第四次双星干涉测量目录中提供的观测数据，并与第六次视觉双星轨道目录中发布的早期轨道进行了比较。轨道参数的计算允许的质量总和的确定和估计三个系统为：1.81±0.17中号_⊙，1.83±0.07中号_⊙，和1.61±0.26中号_⊙分别适用于HIP 11352，HIP 70973和HIP 72479。这表明这些系统属于这两个分量的主序星。这将为这些系统的演进路径提供有价值的见解。