Abstract

We have investigated the stability of the orbital dynamics of a number of planets detected in binary star systems based on the analysis of data from the TESS orbital observatory. For 20 circumstellar planets we have obtained typical estimates of the Lyapunov time (the time of predictable dynamics). The secular orbital dynamics of 18 planets considered is stable with Lyapunov times greater than 6000 years. For the planets TOI-905b and TOI-1634b the calculated Lyapunov times (less than 3000 years) correspond to unstable dynamics and point to possible inaccuracies in the parameters of the planets found. A detailed analysis of the stability of the secular dynamics of the circumbinary planets TOI-1338 and TIC 172900988 has shown that on the stability diagrams the planets are located in regions with relatively large Lyapunov times (more than 7000 years), confirming the reliability of the derived parameters of the planets.

中文翻译：

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双星系统中检测到的 TESS 目录中许多行星的长期动力学

摘要

基于对TESS轨道天文台数据的分析，我们研究了双星系统中检测到的一些行星的轨道动力学稳定性。对于 20 颗环星行星，我们获得了李亚普诺夫时间（可预测动力学时间）的典型估计。考虑的 18 颗行星的长期轨道动力学是稳定的，李雅普诺夫时间大于 6000 年。对于 TOI-905b 和 TOI-1634b 行星，计算出的李雅普诺夫时间（小于 3000 年）对应于不稳定的动力学，并指出所发现行星的参数可能不准确。对环双星行星 TOI-1338 和 TIC 172900988 的长期动力学稳定性的详细分析表明，在稳定性图上，行星位于李雅普诺夫时间相对较大（超过 7000 年）的区域，