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GPS BIIF-8 (PRN 03)
GPS Navigation Satellite (Block IIF) · US Space Force
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GPS BIIF-8 (PRN 03), launched in 2015, continues Block IIF's steady replacement of the aging original GPS constellation. Each satellite in this generation carries a rubidium atomic clock stable to within one part in 10^14 — accurate enough that it would drift by less than a second over roughly three million years, a precision level almost impossible to intuitively grasp but absolutely essential to GPS's core function of timing radio signals traveling at the speed of light.
Its orbit
- Orbit
- Medium Earth Orbita high vantage point, ideal for navigation
- Altitude
- 12,435–12,656 mi (20,012–20,368 km)
- Inclination
- 57.1°
- One orbit
- 12.0 hours2.0 orbits a day
- NORAD ID
- 40294
- Int’l designator
- 2014-068A
- Launched
- 2014
Orbital elements from CelesTrak, as of 22 Sep 2026.
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