CZ-8 R/B

CZ-8 R/B is a spent rocket body associated with China, launched on 2026-04-07 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 709 km and 808 km with an inclination of 89.0°. It travels at approximately 26,918 km/h (7.48 km/s), completing one full orbit every 100 minutes — that’s roughly 14.40 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~25–100 years. Spent rocket bodies like CZ-8 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-8 R/B orbits at an average altitude of 759 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-8 R/B’s average altitude, there are currently 357 active payloads and 2,014 tracked debris or rocket body fragments — notable neighbours include ONEWEB-0179. With an inclination of 89.0°, CZ-8 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 1,219 active satellites in total, of which 52 share a similar altitude band with CZ-8 R/B.