一日双箭 中国成功发射遥感四十七号卫星

Group 1 - The core point of the article is the successful launch of the Yaogan-47 satellite by China on December 9, 2023, marking a significant achievement in the country's space exploration efforts [1][3] - The launch took place at the Jiuquan Satellite Launch Center using the Long March 4B rocket, which is part of the Long March series that has now completed its 614th flight [3] - The Yaogan-47 satellite is primarily designed for applications in land surveying, urban planning, road network design, crop yield estimation, environmental management, and comprehensive disaster prevention and reduction [1][3] Group 2 - The Long March 4B rocket is a three-stage launch vehicle developed by the China Aerospace Science and Technology Corporation, capable of launching various types of satellites into different orbits, with a payload capacity of 2.5 tons to a 700 km sun-synchronous orbit [3] - This launch was the second space mission conducted by China on the same day, following the successful launch of the Long March 6 modified rocket at the Taiyuan Satellite Launch Center earlier that morning [3]