ALTIUS logotype
Mission typeEarth Observation
OperatorEuropean Space Agency
Mission duration>3 years (design lifetime)
Spacecraft properties
ManufacturerQinetiQ Space
Launch mass266 kilograms (586 lb)[1]
Dry mass254 kilograms (560 lb)[1]
Start of mission
Launch date2025 (2025) (planned)[2]
Launch siteKourou ELV
Orbital parameters
Reference systemSun-synchronous orbit
RegimeLow Earth
Altitude≈668 km[1]
Repeat interval3 days[1]
Main payload
NameALTIUS instrument
TypeMulti-channel tuneable spectral imager
WavelengthsUV: 250-355 nm (tuneable)
VIS: 440-675 nm (tuneable)
NIR 600-1020 nm (tuneable)[1]
Resolution1 to 3 km (vertically)[1]
ALTIUS mission patch
ALTIUS mission logo  

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.[3][4][5] 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.[6][4] The satellite design is based on the PROBA small satellite bus.[3] The payload, developed by OIP Sensor Systems, is an innovative UV, visible and NIR instrument.[7]

The mission is scheduled for launch in 2025 from the Guiana Space Centre.[2]

See also


  1. ^ a b c d e f "Altius". ESA. Retrieved 10 November 2021.
  2. ^ a b "Arianespace to launch with Vega C FLEX & ALTIUS, two ESA programmes at the service of environment". Arianespace (Press release). 11 January 2022. Retrieved 11 January 2022.
  3. ^ a b Fussen, Didier; Dekemper, Emmanuel; Errera, Quentin; Franssens, Ghislain; Mateshvili, Nina; Pieroux, Didier; Vanhellemont, Filip (3 August 2016). "The ALTIUS Mission". Atmospheric Measurement Techniques Discussions: 1–40. doi:10.5194/amt-2016-213.
  4. ^ a b "First ALTIUS Symposium". Space Pole Events. Belgian Institute for Space Aeronomy. 2017-05-02. Archived from the original on 2018-06-12. Retrieved 11 June 2018.
  5. ^ "Earth Observation Programmes". ESA Ministerial Council 2016. European Space Agency. 2016. Retrieved 11 June 2018. ALTIUS: Develop and operate a small mission dedicated to the operational monitoring of stratospheric ozone profiles.
  6. ^ Henry, Caleb (27 January 2020). "QinetiQ to build ozone-monitoring satellite for European Space Agency". SpaceNews. Retrieved 27 January 2020.
  7. ^ "ALTIUS". OIP Sensor Systems. Archived from the original on 2018-06-12. Retrieved 11 June 2018.