IABS R/B

IABS R/B is a spent rocket body associated with United States, launched on 1993-11-28 from Cape Canaveral Space Force Station, United States on the DSCS III B-10 launch. With over 33 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 35,618 km and 36,104 km with an inclination of 13.7°. It travels at approximately 11,060 km/h (3.07 km/s), completing one full orbit every ~24 hours (geosynchronous) — that’s roughly 1.00 orbits per day. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Spent rocket bodies like IABS 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.

IABS R/B occupies geostationary orbit at approximately 35,786 km above the equator, where its orbital period matches the Earth’s 24-hour rotation. From the ground, it appears to hover over a fixed point — ideal for broadcast television, weather monitoring and wideband communications. With an inclination of 13.7°, it traces a small figure-of-eight pattern relative to the equator rather than remaining perfectly stationary, which can indicate aging stationkeeping fuel or a deliberate inclined-orbit strategy. Within ±50 km of IABS R/B’s average altitude, there are currently 75 active payloads and 42 tracked debris or rocket body fragments. United States operates approximately 13,271 active satellites in total, of which 20 share a similar altitude band with IABS R/B.