依巴谷天体测量卫星的阶段成果  

Preliminary Progress in the Hipparcos Astrometry

作　　者：王叔和[1] 须同祺[1] 萧耐园[2] 凌兆芬[2] 

机构地区：[1]中国科学院上海天文台,上海200030 [2]南京大学天文系,南京210008

出　　处：《天文学进展》1994年第2期142-149,共8页Progress In Astronomy

基　　金：国家自然科学基金

摘　　要：本文综合介绍依巴谷天体测量卫星自1989年11月开始观测以来，由头两年获得的观测资料取得的空间天体测量的阶段性成果，以及空间天体测量结果与地面观测结果相互之间的比较。成功地用于解算天体测量参数的星数已达112444颗。由依巴谷天体测量卫星的头两年观测资料进行归算处理，得到恒星位置、视差和年自行的预期精度分别为3、4和2mas。由此从整体上全面地检验了依巴谷科学计划，包括观测纲要、输入星表、卫星本身及其所有功能和资料归算处理整体流程等方面的性能和正确性。In this paper, the developments in the space astrometry which are obtained from the observing data of first two years collected by Hipparcos space astrometric satellite since begining of Hipparcos observation in September 1989 and the comparison between the results of the space observations and the ground observations are described. The astrometric parameters has been successfully calculated with 112 444 stars. The predicted accuracies of the positions, the trigonometric parallaxes and annual proper motions are 3,4 and 2 mas respectively. These results examined the Hipparcos project as a whole,such as the satellite, its operation, the observing programme, 'Input Catalogue ', the processing of the Hipparcos data and the system of the data reduction software

关 键 词：天体测量卫生 观测数据 精度 

分 类 号：P111.5[天文地球—天文学]