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GSAT0204 (GALILEO 8)
European Navigation Satellite (Galileo) · ESA / European Commission
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GSAT0204 (Galileo 8), launched alongside GSAT0203 in March 2015, continues Galileo's Full Operational Capability rollout. Galileo satellites carry passive hydrogen maser atomic clocks — a more advanced and stable timekeeping technology than the rubidium and cesium clocks GPS relies on, giving Galileo a genuine technical edge in raw timing precision, even though the overall system reached full global coverage years after GPS.
Its orbit
- Orbit
- Medium Earth Orbita high vantage point, ideal for navigation
- Altitude
- 14,425–14,442 mi (23,215–23,243 km)
- Inclination
- 56.8°
- One orbit
- 14.1 hours1.7 orbits a day
- NORAD ID
- 40545
- Int’l designator
- 2015-017B
- Launched
- 2015
Orbital elements from CelesTrak, as of 15 Sep 2026.
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