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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]
| Mission type | Navigation |
|---|---|
| Operator | VKS (to December 2011) VKO (from December 2011) |
| COSPAR ID | 2011-009A |
| SATCAT no. | 37372 |
| Mission duration | 10 years, 8 months and 16 days |
| Spacecraft properties | |
| Spacecraft | Glonass No.701K Uragan-K1 No.11L [1] |
| Spacecraft type | Uragan-K1 |
| Bus | Ekspress-1000A |
| Manufacturer | ISS Reshetnev |
| Launch mass | 935 kg |
| Start of mission | |
| Launch date | 26 February 2011, 03:07:15 UTC |
| Rocket | Soyuz-2-1b/Fregat-M |
| Launch site | Plesetsk, Site 43/4 |
| End of mission | |
| Disposal | Deactivated |
| Deactivated | 11 November 2021, 13:37 UTC[2] |
| Orbital parameters | |
| Reference system | Geocentric orbit[3] |
| Regime | Medium Earth orbit |
| Perigee altitude | 19121 km |
| Apogee altitude | 19150 km |
| Inclination | 64.90° |
| Period | 675.69 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]
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