OBJECT F

OBJECT F (NORAD ID 54687) is a space object catalogued under China, launched on 2022-12-09 from YSLA on the Jilin-1 launch. It orbits in Low Earth Orbit (LEO) at altitudes between 290 km and 292 km with an inclination of 97.6°. It travels at approximately 27,846 km/h (7.74 km/s), completing one full orbit every 90 minutes — that’s roughly 15.94 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 weeks to months. Orbital Radar tracks OBJECT F in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

OBJECT F orbits at an average altitude of 291 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 OBJECT F’s average altitude, there are currently 328 active payloads and 12 tracked debris or rocket body fragments — notable neighbours include STARLINK-1067, STARLINK-1068, STARLINK-1171. With an inclination of 97.6°, OBJECT F passes over latitudes between 97.6°N and 97.6°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 1,218 active satellites in total, of which 8 share a similar altitude band with OBJECT F.