SpaceX began flight testing their satellite technologies in 2018,[13] with the launch of two test satellites. The two sats were called MicroSat-1a and MicroSat-1b during development, but were named Tintin A and Tintin B upon orbital deployment in February 2018. The satellites will orbit in a circular low Earth orbit at 625 kilometers (388 mi) altitude in a high-inclination orbit for a planned six to twelve-month duration. The sats will communicate with three testing ground stations in Washington and California for short-term experiments of less than ten minutes duration, roughly daily.[12][35] Both microsats were originally slated to be launched into 625 km circular orbits at approximately 86.4 degrees inclination, and to include panchromatic video imager cameras to film image of Earth and the satellite.[36] MicroSat-1a and 1b were planned, as of June 2015, to be the first of up to eight[36] prototype sats to be flown before deployment of the operational constellation.[37] At the time of the June 2015 announcement, SpaceX had stated plans to launch the first two demonstration satellites in 2016,[12] but the target date was subsequently moved out to 2018.[13] The two test sats were successfully launched to a sun-synchronous low Earth orbit on 22 February 2018, and were renamed Tintin A and Tintin B.[6][38]  

计划轨道626公里高，倾角86度。

实际进入轨道514公里，97度倾角。