ARIANE 44LP R/B

ARIANE 44LP R/B is a spent rocket body associated with France, launched on 1988-12-11 from Guiana Space Centre, Kourou on the Skynet 4B launch. With over 38 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Medium Earth Orbit (MEO) at altitudes between 422 km and 35,273 km with an inclination of 6.7°. It travels at approximately 14,605 km/h (4.06 km/s), completing one full orbit every 10 hours 25 minutes — that’s roughly 2.30 orbits per day. Its orbital eccentricity of 0.7195 gives it a noticeably elliptical path, with significant altitude variation between perigee and apogee. Spent rocket bodies like ARIANE 44LP 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.

ARIANE 44LP R/B orbits at an average altitude of 17,848 km in Medium Earth Orbit, the region between LEO and GEO (2,000–35,786 km). MEO’s higher altitude gives each satellite a much larger ground footprint than LEO, meaning fewer spacecraft are needed for global coverage — but signal latency is higher and radiation from the Van Allen belts is a significant design constraint. Within ±50 km of ARIANE 44LP R/B’s average altitude, there are currently 1 active payload and 14 tracked debris or rocket body fragments. This is a relatively sparse altitude band, containing less than 1% of all active satellites. With an inclination of 6.7°, ARIANE 44LP R/B passes over latitudes between 6.7°N and 6.7°S, concentrating coverage over equatorial and near-equatorial regions. Low-inclination orbits maximise revisit rates over specific tropical zones. France operates approximately 115 active satellites in total.