China just launched three more Yaogan 31 reconnaissance satellites to orbit
China successfully sent three reconnaissance satellites into orbit Tuesday (Feb. 23), according to media reports.
A Long March 4C rocket carrying the Yaogan-31 satellites flew into space from Jiuquan Satellite Launch Center in the Gobi Desert at 9:22 p.m. EST (0222 GMT, or 10:22 a.m. local time Wednesday, Feb. 24), according to a report from China's state news provider CCTV.
"Having entered their planned orbits, the satellites will be used for electromagnetic environment surveys and other related technology tests," CCTV added in the short report.
Video: Blastoff! China launches trio of Yaogan-31 reconnaissance satellites
Related: China is planning to launch at least 3 rockets from the sea this year
Western defense analysts have suggested the Yaogan series is meant for the People's Liberation Army for uses such as surveillance, intelligence or reconnaissance that — considering their orbits — may be similar to satellites that track vessels through radio transmissions, according to Space News.
The satellites may include capabilities to study targets in optical wavelengths or synthetic aperture radar, and could carry electronic intelligence payloads, Space News added. Past launches put the Yaogan satellites at orbits of roughly 680 miles (1,100 kilometers) in altitude and inclined by 63 degrees, passing over maritime regions such as the South Shetland Islands.
This is the third clutch of Yaogan satellites to launch from China. The second group went to space just a few weeks ago, on Jan. 28, according to contractor China Aerospace Science and Technology Corp. The first group reportedly launched in April 2018 in similar orbits, allowing China to shorten the time between when a particular region is visible under the growing constellation.
Get the Space.com Newsletter
Breaking space news, the latest updates on rocket launches, skywatching events and more!
China has had a busy February in space, including the successful arrival of Tianwen-1 in Mars orbit and preparation for a Mars landing, reports that its first space station module is preparing for a flight, and ongoing examinations of rocks on the lunar far side by the Yutu 2 rover and Chang'e 4 lander. About a month ago, a launch by China's iSpace failed to reach orbit.
Follow Elizabeth Howell on Twitter @howellspace. Follow us on Twitter @Spacedotcom and on Facebook.
Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: community@space.com.
Elizabeth Howell (she/her), Ph.D., was a staff writer in the spaceflight channel between 2022 and 2024 specializing in Canadian space news. She was contributing writer for Space.com for 10 years from 2012 to 2024. Elizabeth's reporting includes multiple exclusives with the White House, leading world coverage about a lost-and-found space tomato on the International Space Station, witnessing five human spaceflight launches on two continents, flying parabolic, working inside a spacesuit, and participating in a simulated Mars mission. Her latest book, "Why Am I Taller?" (ECW Press, 2022) is co-written with astronaut Dave Williams.