Overall mission / Lancement Multiples Sun Synchronous Orbit Technology Readiness Level Taiyuan Satellite Launch Center Vega Secondary Payload Adapter Xichang Satellite Launch Center / Bit Error Rate Chinese Academy of Science Characterising Exoplanet Satellite End of Life ESA / Space Centre Geo-stationary Transfer Orbit Interface International Organization for Standardization International Traffic / African Union / Guyana Space Centre / /