On September 12, 2019 at 03:26 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 3 satellites. The primary payload was the “Ziyuan-02D” Earth observation satellite. The satellite will support applications including natural resources asset management, ecological monitoring, disaster prevention and control, environmental protection, urban construction, transportation and contingency management.