CZ-6 R/B

CZ-6 R/B is a spent rocket body associated with China, launched on 2021-08-04 from Taiyuan, China on the KL-Beta launch. It orbits in Low Earth Orbit (LEO) at altitudes between 578 km and 882 km with an inclination of 89.0°. It travels at approximately 26,972 km/h (7.49 km/s), completing one full orbit every 99 minutes — that’s roughly 14.49 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~25–100 years. Spent rocket bodies like CZ-6 R/B are among the largest pieces of uncontrolled space debris and are priority targets for collision avoidance manoeuvres and future active debris removal efforts.

CZ-6 R/B orbits at an average altitude of 730 km in the mid-LEO band, where atmospheric drag is minimal but radiation exposure remains manageable. Objects at this altitude persist for decades to centuries, making debris mitigation critical. This regime is popular for remote sensing constellations and scientific instruments that need stable, long-duration orbits. Within ±50 km of CZ-6 R/B’s average altitude, there are currently 358 active payloads and 1,855 tracked debris or rocket body fragments — notable neighbours include TERRA, AQUA, LANDSAT 9. With an inclination of 89.0°, CZ-6 R/B 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 49 share a similar altitude band with CZ-6 R/B.