天体的会合运动是指地球、太阳及第三方天体在空间运动过程中,第三方天体相对于太阳位置的周期性变化。对于地球作为观测者而言,天体的会合运动位置直接决定了天体的观测时刻和方位。天体会合运动是基础天文学的难点内容,也是科普天文学的重要内容。大学地理课程和中学地理课程的基础天文教育中均不同程度涉及了恒星、行星和月球等会合运动过程,并成为不同章节中的重难点内容。然而,该内容的组织方式忽视了不同天体的视运动背后蕴含的统一的天体会合运动原理,从而 The celestial convergence movement is the periodic change of the third-party celestial body relative to the position of the sun during the spatial movement of the earth, the sun and the third-party celestial bodies. For the Earth as an observer, the celestial body’s convergence movement position directly determines the celestial observation time and orientation. Celestial body movement is the basic astronomy difficult content, but also an important part of science astronomy. The basic astronomy education of university geography courses and middle school geography courses involves the process of convergence and movement of stars, planets and the moon in varying degrees and becomes the heavy and difficult content in different chapters. However, the way the content is organized ignores the unified principle of celestial convergence that is implicit in the apparent movement of different celestial bodies and thus