低轨空间目标光度统计分析  

Statistics and Analysis of LEO Objects' Luminosities

作　　者：张逸平[1,2,3] 赵长印[1,2] 张晓祥[1,2] 平一鼎[1,2] 张晨[1,2,3] 

机构地区：[1]中国科学院紫金山天文台,南京210008 [2]中国科学院空间目标与碎片观测重点实验室,南京210008 [3]中国科学院大学,北京100049

出　　处：《天文学报》2014年第4期322-337,共16页Acta Astronomica Sinica

基　　金：国家自然科学基金项目(11033009;11125315)资助

摘　　要：光度是空间目标的基本特征之一,常用于空间目标的辅助识别,也可用于计算空间目标光学散射截面.空间目标通常因反射太阳光而发亮,其亮度受到多种因素影响.多目标光度观测设备运行以来,积累了大量空间目标的光度数据.对此设备测光的整体精度进行了评估,列出了空间目标相位角-星等关系(PA-m)的几种常见情况,并对2 000多个低轨目标的光度情况进行了统计.As a basic property of space objects,luminosity is frequently used for the identification of space objects,as well as for the calculation of their scattering cross sections.In general,space objects shine only by reflecting sunlight.The luminosity observed by ground stations was affected by many factors.Since the multi-objective photometric observation equipment operated 5 years ago,a large number of photometric data have been accumulated.This article estimates the overall accuracies of the data,and lists some situations through the relation between phase angle and magnitude （PA-m）.And the statistics is conducted on the luminosities of more than two thousand low earth orbit （LEO） objects.

关 键 词：天体测量学 仪器 测光 方法 数据分析 方法 统计 

分 类 号：P123[天文地球—天体测量]