Sun-Synchronous Orbit
Also known as: sso
Definition
A sun-synchronous orbit is a near-polar orbit that precesses at a rate that keeps local solar time approximately constant for each pass.
Key Points
- Used where repeatable lighting conditions matter.
- Common in earth observation and remote sensing missions.
- Requires careful orbital design and station keeping.
- Supports consistent imaging and revisit patterns.
Concept
It is a geometry and timing pattern, not a satellite type.
Explainer
The main value of a sun-synchronous orbit is predictable illumination. That makes it useful for earth observation, mapping, and other missions that depend on repeatable sunlight conditions.
Cite this entry
Sun-Synchronous Orbit. ConnectedEarth Knowledge Base. https://connectedearth.space/knowledge-base/sun-synchronous-orbit/ (updated 13 September 2026).