恒星视位置的长期计算法

提出了一种不用查表就可实现恒星视位置长期计算方法，即基于球面天文学和天体力学的基本理论，通过对影响恒星视位置的各种因素的误差模型分析，并对ＦＫ４星表的历元平位置经过误差修正而得到恒星视位置，本算法可长期使用，使天文自动定位简单快捷，作者还对导航常用６１颗恒星的视位置进行了计算并与航海天文历进行了比较，结果证明完全能满足航海天文定位的精度要求。

The Algorithm Continuously Used to Calculate the Apparent Place of Stars

This paper presents an algorithm to calculate the apparent place of stars.It can be continuously used,but need not to look up the star catalogue.It is based on the fundamental theories of spherical astronomy and celestial mechanics.From the analysis of the error models of the factors which affect the place of celestial body,the apparent place of stars is obtained by adding various errors to the epoch of mean position of FK4 star catalogue.Astronomical auto-positioning becomes easy and quick by use of this algorithm.This paper also calculates the apparent place of 61stars that are often used in navigation.Compared to NAUTICAL ALMANAC,the result shows that it has reached the precision of navigation positioning completely.