On December 20, 2019 at 03:22 UTC the “Long March – 4B” (“Changzheng-4B”) rocket-carrier was launched from the Taiyuan Satellite Launch Center in north China's Shanxi Province. The rocket orbited the “CBERS-4A” (China-Brazil Earth Resourse Satellite). The rocket also orbited the eight smaller satellites including Ethiopian Remote Sensing Satellite (ETRSS).