SES-21

SES-21 is an active satellite operated by SES S.A. (SES), launched on 2022-10-04 from Cape Canaveral, Florida. It orbits in Geostationary Orbit (GEO) at altitudes between 35,783 km and 35,792 km with an inclination of 0.0°. It travels at approximately 11,070 km/h (3.07 km/s), completing one full orbit every ~24 hours (geosynchronous) — that’s roughly 1.00 orbits per day. It is part of the Ses constellation group. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks SES-21 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

SES-21 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. Within ±50 km of SES-21’s average altitude, there are currently 714 active payloads and 60 tracked debris or rocket body fragments — notable neighbours include ASTRA 1N, GOES 16, TDRS 13. SES operates approximately 77 active satellites in total, of which 36 share a similar altitude band with SES-21.