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GPS BIIR-13 (PRN 02)
GPS Navigation Satellite (Block IIR) · US Space Force
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GPS BIIR-13 (PRN 02), launched in 2004, is the final original Block IIR satellite, completing a dozen-satellite generation built specifically to keep the GPS constellation at full strength through the early 2000s. Its PRN 02 code has been reassigned and reused across GPS history — pseudo-random noise codes are a limited resource shared and recycled as older satellites retire and new ones take their orbital slots, a detail almost no GPS user ever thinks about but that engineers manage constantly.
Its orbit
- Orbit
- Medium Earth Orbita high vantage point, ideal for navigation
- Altitude
- 12,261–12,830 mi (19,732–20,648 km)
- Inclination
- 55.1°
- One orbit
- 12.0 hours2.0 orbits a day
- NORAD ID
- 28474
- Int’l designator
- 2004-045A
- Launched
- 2004
Orbital elements from CelesTrak, as of 22 Sep 2026.
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