Science
SSTL S1-4
UK Commercial Earth Observation Satellite · SSTL (UK)
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SSTL S1-4, a British high-resolution optical imaging satellite launched alongside NovaSAR-1 in 2018, delivering 1-meter resolution imagery commercially through Surrey Satellite Technology's global customer base — part of the UK's long-running strategy of exporting small-satellite imaging capability to nations building their first Earth observation programs.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 357–361 mi (574–581 km)
- Inclination
- 97.5°
- One orbit
- 96.1 minutes15.0 orbits a day
- NORAD ID
- 43618
- Int’l designator
- 2018-071A
- Launched
- 2018
Orbital elements from CelesTrak, as of 22 Sep 2026.
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