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COSMOS 2501 (702K)
Russian Navigation Satellite (GLONASS-K, First of Generation) · Russian Aerospace Forces
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Cosmos 2501 (GLONASS-K), launched February 2011, is the first satellite of GLONASS's next generation — smaller, lighter, and designed for a 10-year operational life, nearly 40% longer than GLONASS-M. GLONASS-K's most significant upgrade is its new CDMA signal, the same broadcasting method GPS, Galileo, and BeiDou all use, finally letting receiver manufacturers build simpler, cheaper multi-constellation chips capable of using all four global navigation systems through a single unified design rather than needing separate hardware for GLONASS's older frequency-division approach.
Its orbit
- Orbit
- Medium Earth Orbita high vantage point, ideal for navigation
- Altitude
- 11,856–11,926 mi (19,081–19,193 km)
- Inclination
- 63.6°
- One orbit
- 11.3 hours2.1 orbits a day
- NORAD ID
- 40315
- Int’l designator
- 2014-075A
- Launched
- 2014
Orbital elements from CelesTrak, as of 21 Sep 2026.
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