SIRIUS XM-11

SIRIUS XM-11 is an active satellite operated by United States, launched on 2026-06-29 from Cape Canaveral, Florida. As a relatively recent addition to the catalogue, its orbital elements are well-characterised. It orbits in Medium Earth Orbit (MEO) at altitudes between 200 km and 19,628 km with an inclination of 27.0°. It travels at approximately 17,811 km/h (4.95 km/s), completing one full orbit every 5 hours 45 minutes — that’s roughly 4.17 orbits per day. Its orbital eccentricity of 0.5965 gives it a noticeably elliptical path, with significant altitude variation between perigee and apogee. Orbital Radar tracks SIRIUS XM-11 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

SIRIUS XM-11 orbits at an average altitude of 9,914 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 SIRIUS XM-11’s average altitude, there are currently 1 active payload and 5 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 27.0°, SIRIUS XM-11 passes over latitudes between 27.0°N and 27.0°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. United States operates approximately 12,446 active satellites in total.