Issue 137

China Launches Yaogan-50 01 into Retrograde Orbit

13 Jan 2026: China launched a LM-6A with the Yaogan-50 01 (67433) from the Taiyuan Satellite Launch Center. According to official sources, the satellite “will be used for national land surveys, crop yield estimation, and disaster prevention and mitigation,” which is the generic description China uses for imagery…

13 Jan 2026: China launched a LM-6A with the Yaogan-50 01 (67433) from the Taiyuan Satellite Launch Center. According to official sources, the satellite “will be used for national land surveys, crop yield estimation, and disaster prevention and mitigation,” which is the generic description China uses for imagery satellites.

China placed YG-50 01 into an unusual retrograde orbit with an inclination of 142° which will reach as far north as 38°N and as far south as 38°S. In retrograde orbit the satellite moves from East to West over the surface of the Earth…opposite of the Earth’s rotation. The effect is to increase the relative velocity (ground speed) of the satellite in relation to the Earth’s surface. Relative velocity is an important factor for Synthetic Aperture Radar (SAR) imagery…the greater the relative velocity the better potential imagery resolution (thank you Jim Shell!). This orbit suggests a SAR imagery capability.

YG-50 01 is orbiting at a higher average altitude (823km) than other imaging satellites, however China has launched 1 SAR imager to GEO (36,000km from Earth) and potentially 2 SAR imagers to MEO (7,500km).

To reach this retrograde orbit China launched the LM-6A westward from Taiyuan and over NW India. To track this launch China likely used its tracking station in Karachi and Yuanwang tracking ships in the Indian Ocean. Finally, China continued its unfortunate pattern of leaving the LM-6A upperstage in orbit with an apogee of 831km and perigee of 546km ensuring this object will remain a hazard to other spacecraft for years to come. Launch Video.


LM-6A Launched West from Taiyuan over China and NW India…awaiting images of 1st stage debris (nasaspaceflight.com)


Orbit Visualization Comparing YG-50 01’s 142° Inclination and YG-39 01B’s 35° Inclination. (spaceaware.io)


Map of Chinese Space Tracking Stations (www.wsj.com)


Ground Track of YG-50 01 (142° inclined) & YG-39 01B (35° inclined) Approaching their Southernmost Positions (spaceaware.io)