Full Name Arctic Weather Satellite
aka EPS-Sterna
Status Approved
Mission Agencies ESA, EUMETSAT Launch Date Jun 2024
Mission Links mission site EOL Date Jun 2029
EO Portal Info NORAD Catalog #
International Designator
Orbit Type Sun-synchronous Orbit Period 97 minutes
Orbit Sense Ascending Orbit Inclination 97.79 deg
Orbit Altitude 595 km Orbit Longitude
Orbit LST Repeat Cycle
Objectives and Applications AWS is the protoflight satellite for a planned constellation of meteorological microsatellites providing passive microwave soundings for global atmospheric temperature temperature and humidity profiles soundings in all weather conditions, with frequent revisits over the Arctic and Antarctic polar regions. This constellation (called EPS-Sterna, which is named after the latin name Sterna for the Arctic Tern) will consist of 3 orbital planes with 2 satellites in each orbital plane. With a nominal satellite lifetime of 5 years, a first launch in 2029 and 2 replenishments of each orbit plane, a minimum mission lifetime for the full system of 13 years will be achieved. Local Solar time for AWS is 09:00 - 11:00 and EPS-Sterna Descending LST is 03:30, 07:30, 11:30.
Mission Measurements
AtmosphereAtmospheric Humidity Fields AWS Instrument
Atmospheric Temperature Fields AWS Instrument
Mission Instruments
AWS Instrument - Arctic Weather Satellite Microwave Radiometer
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