The astrometric observations of the apparent close approaches between near-Earth asteroids and the Gaia stars provide high quality data for studies on the dynamics of these objects. We present the technique of data analysis that allows us to decrease the distortion-dependent positional errors and observational results of eight of such events performed with the ‘Saturn-1m’ telescope of the Pulkovo Observatory in 2019–2020. The mean value of the astrometric accuracy of the relative ‘star - asteroid’ positions is ±30 mas.

中文翻译：

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Pulkovo 对 2019-2020 年近地小行星与盖亚星之间明显接近的观测

近地小行星和盖亚恒星之间明显接近的天体测量观测为研究这些物体的动力学提供了高质量的数据。我们展示了数据分析技术，该技术使我们能够减少2019-2020 年使用普尔科沃天文台的“Saturn-1m”望远镜进行的 8 个此类事件的失真相关位置误差和观测结果。相对“恒星-小行星”位置的天体测量精度的平均值为±30 mas。