Results are presented from a study of the binary star ADS 7251 (STF 1321) based on a uniform series of observations on the 65-cm refractor at Pulkovo from 1962 through 2018. The errors in the yearly average positions ρ and θ are equal to 0′′.004 and 0°.02 for the photographic and 0.”003 and 0.°01 for the CCD observations. A new orbit is calculated from the found relative position and the exact parallax of Gaia. The comparisons use modern observations of Hipparcos and Gaia, as well as observations from the distant past in the nineteenth century by Struve. This study yielded better convergence with the distant observations when the Gaia parallax was used. The errors calculated from O-C are 0′′.008 ÷ 0′′.011 . They are comparable to those obtained for other binary stars close to the sun, as well as to the corresponding estimates for stars rotating around the central body of the galaxy and observed on the Keck and VLT telescopes. The importance of observations of the components A and B of ADS 7251 as possible parent stars for exoplanets is noted.

结果是根据对1962年至2018年普尔科沃65厘米折射镜的一系列一致观测结果，对双星ADS 7251（STF 1321）进行研究得出的。年平均位置ρ和θ的误差等于0对于照相，'。004和0°.02，对于CCD观察为0.” 003和0.°01。根据找到的相对位置和Gaia的精确视差，计算出一个新轨道。比较使用的是Hipparcos和Gaia的现代观测，以及Struve在19世纪遥远的观测。当使用盖亚视差时，该研究与较远的观测结果具有更好的收敛性。根据OC计算的误差为0''。008÷0''。011。它们可与其他接近太阳的双星获得的结果相比，以及对绕星系中心旋转并在凯克和VLT望远镜上观测到的恒星的相应估计。指出了观测ADS 7251的组分A和B作为系外行星可能的母星的重要性。