TITAN 4B R/B

TITAN 4B R/B is a spent rocket body associated with United States, launched on 2005-04-30 from Cape Canaveral, Florida on the ONYX 5 launch. With over 21 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 392 km and 461 km with an inclination of 57.0°. It travels at approximately 27,567 km/h (7.66 km/s), completing one full orbit every 93 minutes — that’s roughly 15.47 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~1–3 years. Spent rocket bodies like TITAN 4B 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.

TITAN 4B R/B orbits at an average altitude of 427 km in the core of Low Earth Orbit, the most heavily utilised altitude band. The balance of moderate drag (limiting debris accumulation) and short signal path (enabling low-latency links and high-resolution imaging) makes this regime the default for most commercial and government missions. Within ±50 km of TITAN 4B R/B’s average altitude, there are currently 4,371 active payloads and 139 tracked debris or rocket body fragments — notable neighbours include STARLINK-1008, STARLINK-1012, STARLINK-1017. This makes it one of the more crowded altitude bands, containing roughly 25% of all active satellites. With an inclination of 57.0°, TITAN 4B R/B passes over latitudes between 57.0°N and 57.0°S, covering most populated land masses in both hemispheres. This mid-inclination band balances global coverage with efficient launch energy requirements. United States operates approximately 12,413 active satellites in total, of which 4,126 share a similar altitude band with TITAN 4B R/B.