conjunctions_data

Excel file containing data on 10,960 conjunction events occurred in 2022 between space objects in Low-Earth Orbit. The dataset is represented as a table, where each row corresponds to a unique conjunction event and each column corresponds to a different conjunction feature. The first row of the table reports the columns names. For each conjunction, the following features are provided: the two objects' names ('name_1', 'name_2'), the two objects' Norad numbers ('norad_1', 'norad_2'), a Two-Line Element (TLE) set for each object ('TLE_1', 'TLE_2'), the time difference (in days) between each TLE epoch and the Time of Closest Approach (TCA) ('prop_1', 'prop_2'), the minimum predicted distance at TCA ('min_range') and the predicted relative velocity at TCA ('rel_vel'). To propagate the objects' trajectories and reconstruct the conjunction kinematics, the only necessary conjunction features are the two TLE sets and the two propagation time-spans.

本数据集包含2022年间在低地球轨道中发生的10,960次空间物体联合事件的数据，以Excel文件形式呈现。数据集以表格形式展现，其中每一行代表一个独特的联合事件，每一列则对应不同的联合特征。表格的第一行报告了各列的名称。对于每一次联合事件，提供以下特征：两个物体的名称（'name_1'、'name_2'）、两个物体的诺拉德编号（'norad_1'、'norad_2'）、针对每个物体的两行元素（TLE）集（'TLE_1'、'TLE_2'）、每个TLE纪元与最近接近时刻（TCA）之间的时间差（以天为单位）（'prop_1'、'prop_2'）、TCA时的最小预测距离（'min_range'）以及预测的相对速度（'rel_vel'）。为了推演物体的轨迹和重构联合动力学，所需的唯一联合特征为两个TLE集以及两个推演时间跨度。