EUTE 1-F4 (ECS 4)

EUTE 1-F4 (ECS 4) is an active satellite operated by Eutelsat, launched on 1987-09-16 from Guiana Space Centre, Kourou. With over 39 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 36,190 km and 36,282 km with an inclination of 13.8°. It travels at approximately 11,011 km/h (3.06 km/s), completing one full orbit every 24.3 hours — that’s roughly 0.99 orbits per day. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks EUTE 1-F4 (ECS 4) in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

EUTE 1-F4 (ECS 4) 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 13.8°, 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 EUTE 1-F4 (ECS 4)’s average altitude, there are currently 72 active payloads and 15 tracked debris or rocket body fragments. Eutelsat operates approximately 62 active satellites in total, of which 7 share a similar altitude band with EUTE 1-F4 (ECS 4).