|Mission type||Earth Observation|
|Operator||European Space Agency|
|Mission duration||>3 years (design lifetime)|
|Launch mass||270 kilograms (600 lb)|
|Start of mission|
|Launch date||2023 (planned)|
|Reference system||Sun-synchronous orbit|
|Type||Multi-channel tuneable spectral imager|
|Wavelengths||UV: 250-400 nm (tuneable)|
VIS: 400-800 nm (tuneable)
NIR 800-1800 nm (tuneable)
ALTIUS (Atmospheric Limb Tracker for Investigation of the Upcoming Stratosphere) is a satellite mission proposed by the Belgian Institute for Space Aeronomy and currently under development by the European Space Agency. Its main objective is to monitor the distribution and evolution of stratospheric ozone in the Earth's atmosphere. The industrial consortium is led by QinetiQ Space, acting as mission prime. The satellite design is based on the PROBA small satellite bus. The payload, developed by OIP Sensor Systems, is an innovative UV, visible and NIR instrument.
ALTIUS: Develop and operate a small mission dedicated to the operational monitoring of stratospheric ozone profiles.