FENGYUN 3D

FENGYUN 3D is an active satellite operated by China Meteorological Administration (China), launched on 2017-11-14 from Taiyuan, China. It orbits in Low Earth Orbit (LEO) at altitudes between 824 km and 828 km with an inclination of 99.0°. It travels at approximately 26,791 km/h (7.44 km/s), completing one full orbit every 101 minutes — that’s roughly 14.20 orbits per day. Its near-polar, sun-synchronous orbit means it passes over any given point on Earth at approximately the same local solar time, ideal for consistent Earth observation lighting conditions. Its near-circular orbit (eccentricity close to zero) means it maintains a very consistent altitude throughout each revolution. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~100–500 years. Orbital Radar tracks FENGYUN 3D in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

FENGYUN 3D orbits at an average altitude of 826 km in a sun-synchronous orbit (SSO), a specialised subset of LEO where the orbital plane precesses to maintain a constant angle relative to the Sun. This provides consistent lighting conditions on every pass — essential for Earth observation, weather monitoring and environmental science. Within ±50 km of FENGYUN 3D’s average altitude, there are currently 379 active payloads and 2,249 tracked debris or rocket body fragments — notable neighbours include NOAA 20, ONEWEB-0179, ONEWEB-0455. With an inclination of 99.0°, FENGYUN 3D passes over latitudes between 99.0°N and 99.0°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 120 share a similar altitude band with FENGYUN 3D.