HIP 53731 is a binary consisting of stars of the spectral types K0 and K9. The orbit of this object was constructed previously by Cvetković et al. and improved by Tokovinin. It should be noted that there is a 180 ambiguity in the position angles of some published measurements. Speckle interferometric observations were obtained in 2007–2020 (21 measurements) at the 6-m telescope of the SAO RAS (BTA) by the authors of this article. The analysis of new data together with previously published ones made it possible to construct an accurate orbit of HIP 53731 and to halve the already known values of the orbital period of the system. As a result of the study, the mass sum, the masses of each component and their spectral types were determined by two independent methods. According to the qualitative classification of orbits, the orbital solution has grade 2 – “good” (observations cover more than half of the orbital period and correspond to different phases).

HIP 53731 是由光谱类型 K0 和 K9 的恒星组成的双星。该物体的轨道是由 Cvetković 等人先前构建的。并由 Tokovinin 改进。应该注意的是，一些已发表的测量值的位置角存在 180 度的模糊度。本文作者于 2007-2020 年在 SAO RAS (BTA) 的 6 米望远镜上获得了散斑干涉观测（21 次测量）。对新数据的分析与以前发布的数据一起，可以构建 HIP 53731 的准确轨道，并将系统轨道周期​​的已知值减半。作为研究的结果，质量总和、每个组分的质量及其光谱类型由两种独立的方法确定。根据轨道的定性分类，