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GSAT0218 (GALILEO 22)
European Navigation Satellite (Galileo) · ESA / European Commission
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GSAT0218 (Galileo 22), completing the December 2017 quadruple launch, pushed the Galileo constellation further toward its full 30-satellite target — 24 operational plus 6 in-orbit spares, a redundancy margin specifically designed so a single satellite failure never meaningfully degrades system-wide positioning accuracy. The full 30-satellite Galileo design deliberately includes six in-orbit spares beyond the 24 needed for basic coverage, insurance so that losing any single satellite to failure never meaningfully degrades positioning accuracy for the roughly four billion smartphones worldwide now capable of receiving its signal.
Its orbit
- Orbit
- Medium Earth Orbita high vantage point, ideal for navigation
- Altitude
- 14,425–14,443 mi (23,215–23,244 km)
- Inclination
- 55.0°
- One orbit
- 14.1 hours1.7 orbits a day
- NORAD ID
- 43058
- Int’l designator
- 2017-079D
- Launched
- 2017
Orbital elements from CelesTrak, as of 21 Sep 2026.
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