Geostationary
MTG-S1
Geostationary Atmospheric Sounder · EUMETSAT / ESA
Right now
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Europe's first geostationary infrared sounder — a completely new capability for European meteorology. MTG-S1 doesn't image clouds; it measures temperature and humidity in 3D across Europe and Africa every hour in 3,600 spectral channels. Scientists compare it to replacing a 2D weather map with a 3D scan — the leap MRI brought to medicine, applied to the sky. Expected to extend severe storm warnings by 30 minutes.
Its orbit
- Orbit
- Geostationaryappears to hang motionless over one spot on the equator
- Altitude
- 22,232–22,251 mi (35,779–35,810 km)
- Inclination
- 0.6°
- One orbit
- 23.9 hoursabout one orbit a day
- NORAD ID
- 64723
- Int’l designator
- 2025-143A
- Launched
- 2025
Orbital elements from CelesTrak, as of 22 Sep 2026.