《物理教学》2011年第7期刊登了杨健生、谷丽雅老师撰写的《“嫦娥二号”探月卫星奔月轨道参数探讨》一文,文章就奔月轨道方程和卫星奔月时间进行了探讨。利用文中推导出的“嫦娥二号”奔月轨道周期T=239.7 h,本文对“嫦娥二号”的入轨速度和远地点速度进行了计算和探讨。本文用到的数据如下:近地点距离h=200 km,远地点距离H=380 000 km,地球平均半径R=6371 km;长半轴α=(h+H+2R)/2,半焦距c=(H-h)/2,短 “Physics Teaching” 2011 seventh issue published Yang Jiansheng, Gu Liya teacher wrote “Chang’e II” lunar orbit lunar orbit parameter discussion "article, the article on the lunar orbit and satellite moon flying time Discussed. Using the deduced lunar orbit Chang-2 trajectory of T = 239.7 h, we calculated and discussed the orbital and apogee velocities of Chang’e II. The data used in this paper are as follows: the perigee distance h = 200 km, the apogee distance H = 380 000 km, the earth’s average radius R = 6371 km; the long axis α = (h + H + 2R) / 2, Hh) / 2, short