Kosmos 2471


Kosmos 2471 (Russian: Космос 2471 meaning Cosmos 2471), also known as Glonass-K1 No. 11L or Glonass-K No. 701, was a Russian navigation satellite which was launched in 2011. The first Glonass-K satellite to be launched, it was one of two Glonass-K1 spacecraft which served as prototypes for the operational Glonass-K2 spacecraft.[4]

Kosmos 2471
Mission typeNavigation
OperatorVKS (to December 2011)
VKO (from December 2011)
COSPAR ID2011-009A Edit this at Wikidata
SATCAT no.37372
Mission duration10 years, 8 months and 16 days
Spacecraft properties
SpacecraftGlonass No.701K
Uragan-K1 No.11L [1]
Spacecraft typeUragan-K1
ManufacturerISS Reshetnev
Launch mass935 kg
Start of mission
Launch date26 February 2011, 03:07:15 UTC
Launch sitePlesetsk, Site 43/4
End of mission
Deactivated11 November 2021, 13:37 UTC[2]
Orbital parameters
Reference systemGeocentric orbit[3]
RegimeMedium Earth orbit
Perigee altitude19121 km
Apogee altitude19150 km
Period675.69 minutes

Kosmos 2471 is a 935 kg satellite built by ISS Reshetnev based on the Ekspress-1000A satellite bus. The spacecraft has three-axis stabilisation to keep it in the correct orientation, and broadcast signals in the L1, L2 and L3 navigation bands for Russian military and commercial users.[4] In addition to its navigation payloads, the satellite also carries a Cospas-Sarsat search and rescue payload.[4]

The satellite is located in a medium Earth orbit with an apogee of 19,150 km (11,900 mi), a perigee of 19,121 km (11,881 mi), and 64.8° of inclination.[5] It is equipped with two solar panels to generate power. It entered service by the end of 2011.[6]

Kosmos 2471 was launched from Site 43/4 at the Plesetsk Cosmodrome in northwest Russia. A Soyuz-2.1b carrier rocket with a Fregat upper stage was used to perform the launch, which took place at 03:07:15 UTC on 26 February 2011.[7] The launch successfully placed the satellite into a Medium Earth orbit. It subsequently received its Kosmos designation, and the International Designator 2011-009A. The United States Space Command assigned it the Satellite Catalog Number 37372.[8]

Kosmos 2471 remained in service for ten years. On 11 November 2021, the satellite was decommissioned and removed from the operational GLONASS constellation.[2]


  1. ^ McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 30 November 2013.
  2. ^ a b "Спутник "Глонасс-К" вывели из состава орбитальной группировки" ["Glonass-K" satellite removed from orbital constellation]. TASS (in Russian). 12 November 2021. Retrieved 12 November 2021.
  3. ^ Peat, Chris (30 November 2013). "COSMOS 2471 (GLONASS) - Orbit". Heavens Above.
  4. ^ a b c Krebs, Gunter. "Uragan-K1 (GLONASS-K1)". Gunter's Space Page. Retrieved 14 March 2011.
  5. ^ McDowell, Jonathan. "Issue 639". Jonathan's Space Report. Retrieved 15 March 2011.
  6. ^ "Russia To Start Operating New Glonass-K Satellite By Year End". Space Daily. 7 March 2011.
  7. ^ Zak, Anatoly. "GLONASS-K". RussianSpaceWeb. Archived from the original on 29 July 2015. Retrieved 15 March 2011.
  8. ^ Christy, Robert. "Space events - 2011". Zarya. Archived from the original on 19 October 2012. Retrieved 14 March 2011.