Initiated by Prométhée, an emerging French NewSpace operator dedicated to Earth observation, the Japetus constellation will consist of 20 small satellites positioned 500 km above our heads. Its aim is to provide Earth observation data to players in the environment, security and defence sectors, and to contribute to the fight against global warming. The applications are vast, both at civil and military levels.

Toulouse-based Hemeria is in charge of building these satellites, which will weigh around 50kg and offer exceptional performance and capacity in terms of revisit, resolution, responsiveness and global coverage, partly as a result of the use of artificial intelligence.

Given the success of its partnership with SPACEBEL on the Kinéis constellation, Hemeria is once again turning to SPACEBEL for its recognised expertise in the development of modelling and simulation software for Space systems.  
More specifically, our work concerns the development of the satellite simulator, which checks the correct functioning of the software and prepares the operations of the spacecraft in its future environment.

SPACEBEL thus adds a new application in the field of Space simulation, while strengthening our presence in the NewSpace sector.      
This ambitious project also underlines the essential role of our software engineering solutions in protecting our citizens and our planet.

Following the launch of a demonstrator into orbit at the end of 2023, deployment of the dual Japetus Earth observation system is scheduled to start in 2025.