Successful Launch of Sentinel-6B Satellite Built by Airbus
The Sentinel-6B satellite, constructed by Airbus, was successfully launched from Vandenberg Space Force Base in California on November 17, 2025, according to a statement from Airbus.
Orbital Deployment and Mission Goals
The Sentinel-6B satellite, developed by Airbus, has been placed into orbit to join its predecessor, the Sentinel-6 Michael Freilich launched in November 2020. These identical satellites are designed to collect crucial data on sea surface heights until 2030. In its first year, Sentinel-6B will work in conjunction with Sentinel-6 Michael Freilich to provide accurate data on global sea levels, which are critical for warning coastal countries of potential dangers and for the continuity of oceanic weather forecasting.
Advanced Measurement Capabilities
The Sentinel-6B satellite is equipped to perform precise topographic measurements of the ocean surface. By emitting radar pulses towards the ocean surface and recording the return time, the measurements achieve an accuracy of a few centimeters. In addition to monitoring sea level rise and ocean circulation, it records vertical profiles of atmospheric temperature and humidity. With the rapid rise in sea levels, these data are crucial for developing climate adaptation and mitigation strategies.
Operational Orbit and International Collaboration
The Sentinel-6B satellite operates in a non-heliosynchronous orbit at an altitude of 1,336 km, with a 66-degree inclination to allow Earth observation at different times of the day and night. Weighing approximately 1.3 tons, the satellite is part of the Sentinel-6 mission of the European Copernicus program for the environment. This international initiative was developed jointly by ESA, NASA, EUMETSAT, and NOAA, with support from CNES, illustrating global collaboration in the space sector.
