SENTINEL-6B

SENTINEL-6B is an active satellite operated by ESA / Copernicus (ESA (European Space Agency)), launched on 2025-11-17 from Vandenberg SFB, California. As a relatively recent addition to the catalogue, its orbital elements are well-characterised. It orbits in Low Earth Orbit (LEO) at altitudes between 1,332 km and 1,344 km with an inclination of 66.0°. It travels at approximately 25,886 km/h (7.19 km/s), completing one full orbit every 112 minutes — that’s roughly 12.81 orbits per day. Its near-circular orbit (eccentricity close to zero) means it maintains a very consistent altitude throughout each revolution. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is thousands of years. Orbital Radar tracks SENTINEL-6B in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.

SENTINEL-6B orbits at an average altitude of 1,338 km in the uppermost reaches of Low Earth Orbit. At this altitude, orbital decay is effectively zero without active deorbiting, and coverage footprints are significantly larger than lower LEO, though at the cost of higher latency. Within ±50 km of SENTINEL-6B’s average altitude, there are currently 12 active payloads and 160 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 66.0°, SENTINEL-6B passes over latitudes between 66.0°N and 66.0°S, covering most populated land masses in both hemispheres. This mid-inclination band balances global coverage with efficient launch energy requirements. ESA (European Space Agency) operates approximately 93 active satellites in total, of which 2 share a similar altitude band with SENTINEL-6B.