QIANFAN-77

QIANFAN-77 is an active satellite operated by China, launched on 2025-03-11 from Wenchang, China. As a relatively recent addition to the catalogue, its orbital elements are well-characterised. It orbits in Low Earth Orbit (LEO) at altitudes between 897 km and 917 km with an inclination of 89.0°. It travels at approximately 26,642 km/h (7.40 km/s), completing one full orbit every 103 minutes — that’s roughly 13.96 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-77 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

QIANFAN-77 orbits at an average altitude of 907 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-77’s average altitude, there are currently 214 active payloads and 1,270 tracked debris or rocket body fragments. With an inclination of 89.0°, QIANFAN-77 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 1,219 active satellites in total, of which 81 share a similar altitude band with QIANFAN-77.