TechnicalSSO
Sun-Synchronous Orbit
A near-polar orbit where the satellite passes over any given point on Earth's surface at the same local solar time.
SSO is critical for Earth observation, providing consistent lighting conditions.
Characteristics
- Altitude: typically 600-800 km
- Inclination: ~98° (retrograde)
- Period: ~100 minutes
Applications
- Earth observation
- Weather satellites
- Environmental monitoring
Regulatory Aspects
- Standard LEO debris rules apply
- End-of-life disposal; the EU Space Act proposal (COM(2025) 335) leaves the maximum LEO lifetime to an implementing act (Annex V point 3.4.2)