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我国成功发射的第二颗卫星“科学实验二号”,于一九七一年三月三日入轨,卫星本体一九七九年六月十七日陨落,末级运载火箭一九七六年二月十六日陨落。中国科学院人造卫星系统对这两个空间目标,长期进行了光学跟踪观测、测轨和预报;对所积累的大量观测资料,进行轨道分析,为卫星大气动力学研究和有关任务提供了宝贵的轨道资料。本文就是对“科学实验二号”跟踪观测和轨道分析的总结;同时扼要地介绍了国外对这两个空间目标的跟踪和研究情况。
The second satellite, “Scientific Experiment 2” successfully launched by our country, entered the orbit on March 3, 1973 and the satellite body fell on June 17, 1979. The last-stage launch vehicle, 1976 February 16, fall. The satellite system of the Chinese Academy of Sciences has carried out long-term optical tracking observation, orbit determination and forecasting on these two spatial targets. The orbital analysis of a large amount of observed data has provided valuable orbits for satellite atmospheric dynamics research and related tasks data. This article is a summary of the follow-up observation and orbit analysis of “Scientific Experiment II”; at the same time, it briefly introduces the foreign countries’ follow-up and research on these two space targets.