QIANFAN-139

QIANFAN-139 is an active satellite operated by China, launched on 2026-05-12 from Taiyuan, China on the Qianfan Jigui 09 launch. As a relatively recent addition to the catalogue, its orbital elements are well-characterised. It orbits in Low Earth Orbit (LEO) at altitudes between 945 km and 959 km with an inclination of 89.0°. It travels at approximately 26,560 km/h (7.38 km/s), completing one full orbit every 104 minutes — that’s roughly 13.85 orbits per day. It is part of the Qianfan constellation group. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~100–500 years. Orbital Radar tracks QIANFAN-139 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

QIANFAN-139 orbits at an average altitude of 952 km in the upper LEO band, where atmospheric drag is negligible and objects can persist for centuries to millennia. This altitude is used by broadband constellations like OneWeb and by scientific missions requiring stable orbits far from the densest debris bands. Within ±50 km of QIANFAN-139’s average altitude, there are currently 337 active payloads and 1,103 tracked debris or rocket body fragments. With an inclination of 89.0°, QIANFAN-139 passes over latitudes between 89.0°N and 89.0°S, providing near-global coverage including the polar regions. Polar and near-polar orbits are used for reconnaissance, weather monitoring and Earth-observation missions that need to image every part of the planet. China operates approximately 1,221 active satellites in total, of which 61 share a similar altitude band with QIANFAN-139.