ALTIUS (Atmospheric Limb Tracker for Investigation of the Upcoming Stratosphere) is a satellite mission proposed by the Belgian Institute for Space Aeronomy, developed in collaboration with the European Space Agency. Its primary goal is to track the distribution and changes in stratospheric ozone, a crucial component of the Earth's atmosphere that helps protect the planet from harmful ultraviolet radiation.

The launch date is currently targeted for 2026 (UTC).

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Provider	Arianespace
Vehicle	Vega C
Location	ELA-1 Guiana Space Centre French Guiana
All dates and times should be submitted in UTC timezone. Use Estimated Date if you don't know the official launch date and time; otherwise, use Window Opens/Closes and/or Planned T-0, which will override the Estimated Date.
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Time
Launch Date	2026
Launch Time
— Planned T-0 —
Date	2026
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Date	2026
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Planetary Science

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