Home / Standards / GB/T 29079-2012 GB/T 29079-2012 Active Classification and parameter symbols for orbits and trajectories of spacecraft 航天器轨道分类及常用参数符号 Standard Type GBT ICS 01.040.49 CCS V04 Status 现行 Issue Date 2012-12-31 Implementation 2013-07-01 Responsible Dept 国家标准委 Drafting Unit N/A