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COSMOS 2557 (706K)
Russian Navigation Satellite (GLONASS-K) · Roscosmos / ISS Reshetnev
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Cosmos 2557 (GLONASS-K), launched July 7, 2022, is part of the generation that finally let Russia's navigation system speak the same digital language as GPS, Galileo, and BeiDou. Every earlier GLONASS satellite broadcast using FDMA — each one on its own slightly different frequency, a Soviet-era design choice that forced receiver manufacturers to build genuinely separate hardware just to support GLONASS. GLONASS-K added CDMA signals, the shared broadcasting method every other major navigation system uses, while cutting satellite mass nearly in half by dropping the pressurized housing older GLONASS generations relied on.
Its orbit
- Orbit
- Medium Earth Orbita high vantage point, ideal for navigation
- Altitude
- 11,871–11,911 mi (19,104–19,169 km)
- Inclination
- 64.2°
- One orbit
- 11.3 hours2.1 orbits a day
- NORAD ID
- 52984
- Int’l designator
- 2022-075A
- Launched
- 2022
Orbital elements from CelesTrak, as of 21 Sep 2026.
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