Satis (spacecraft)

Satis

Mission type	Planetary defense & asteroid exploration
Operator	ESA
Spacecraft properties
Spacecraft type	12U CubeSat
Start of mission
Launch date	April 2028 (planned)

Satis is a proposed deep-space CubeSat mission under development by the European Space Agency (ESA) as part of the agency's planetary defence activities. If approved, Satis will launch in April 2028 in order to study the properties of the near-Earth asteroid Apophis before, during, and after its closest approach to Earth in April 2029. Satis will be a 12-unit CubeSat based on a similar European mission M-ARGO. ^{[1] [2] [3] [4] [5] [6]}

See also

• List of European Space Agency programmes and missions
• Ramses
• Other European deep-space CubeSat missions:
  • HENON — launch in 2026, a space weather mission, ESA's first ever stand-alone deep space CubeSat
  • M-Argo — launch in 2027, a mission to an asteroid
  • LUMIO — launch in 2027, a mission to characterize the impacts of near-Earth meteoroids on the lunar far side
  • VMMO — launch in 2028, a mission to map the distribution of water ice and ilmenite on the Moon

References

1. Kulu, Erik. "Satis". Nanosats Database. Retrieved 2025-09-25.
2. Moissl, R. (2024). "ESA Mission Options to Asteroid Apophis During the 2029 Close Approach with Earth: Programmatic and Strategic Perspective". Apophis T-5 Workshop. 3006: 2033. ISSN   0161-5297.
3. Satis: a fast-response ESA Planetary defence mission
4. "Planetary Defence Projects and Core Activities - CM22". www.esa.int. Retrieved 2025-09-25.
5. "SATIS: a mission study for a deep-space CubeSat to observe (99942) Apophis, a near-Earth potential hazardous asteroid, before, during, and after the Earth fly-by". Proceedings Volume 13546, Small Satellites Systems and Services Symposium (4S 2024); 135461O. doi:10.1117/12.3061583.full.
6. "Redwire Leading ESA Planetary Defense Mission Study". Redwire Space. 2024-06-12. Retrieved 2025-09-25.