Flights 13 and 14 had Centaur boosting the spacecraft to escape velocity for an early demonstration of circumlunar capability. 第13次和第 14次飞行利用森托尔推进飞船逃离速度限制，这是绕月飞行能力的早期证明。
The circumlunar satellite will experience another three accelerations, which will further shorten its distance to the moon orbit, Zhou said. 周先生说:环月卫星将经历三级加速;进一步缩短它与月球轨道的距离.
The circumlunar satellite separated from the rocket at 6:29 pm and entered into Earth orbit, where it will travel for seven days, according to the Beijing Aerospace Control Center (BACC) . 据北京航空控制中心宣布，“嫦娥一号”绕月卫星于下午6:29分与运载火箭分离并进入绕地轨道，且将绕地球七天。
Analysis of Error Sources for Circumlunar Spacecraft Orbit Determination 影响环月飞行器定轨精度的误差源分析
