COSMOS 434 DEB

COSMOS 434 DEB is a tracked piece of space debris attributed to Russia (CIS), launched on 1971-08-12 from Baikonur Cosmodrome, Kazakhstan on the T2K No. 3 launch. After more than 55 years in orbit, it is one of the longest-surviving objects in the space catalogue. It orbits in Low Earth Orbit (LEO) at altitudes between 560 km and 636 km with an inclination of 49.5°. It travels at approximately 27,226 km/h (7.56 km/s), completing one full orbit every 97 minutes — that’s roughly 14.90 orbits per day. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is ~3–10 years. As orbital debris, COSMOS 434 DEB poses a potential collision risk to operational satellites in nearby orbits and is continuously monitored by the U.S. Space Surveillance Network and other tracking systems.

COSMOS 434 DEB orbits at an average altitude of 598 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 COSMOS 434 DEB’s average altitude, there are currently 1,670 active payloads and 706 tracked debris or rocket body fragments — notable neighbours include ONEWEB-0050, STARLINK-3005, STARLINK-3090. This makes it one of the more crowded altitude bands, containing roughly 8.9% of all active satellites. With an inclination of 49.5°, COSMOS 434 DEB passes over latitudes between 49.5°N and 49.5°S, covering the tropical and temperate zones where most of the world’s population resides. Low-to-mid inclination orbits are efficient to reach from equatorial and mid-latitude launch sites. Russia (CIS) operates approximately 1,537 active satellites in total, of which 28 share a similar altitude band with COSMOS 434 DEB.