| Kosmos 2501 | |
| Mission Type: | Navigation |
| Operator: | VKO |
| Cospar Id: | 2014-075A |
| Satcat: | 40315 |
| Mission Duration: | 10 years |
| Spacecraft: | Glonass No.702K Uragan-K1 No. 12L[1] |
| Spacecraft Type: | Uragan-K1 |
| Spacecraft Bus: | Ekspress-1000A |
| Launch Mass: | 935 kg |
| Launch Date: | UTC |
| Launch Site: | Plesetsk, Site 43/4 |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Medium Earth |
| Orbit Periapsis: | 19155 km |
| Orbit Apoapsis: | 19199 km |
| Orbit Inclination: | 64,8° |
| Orbit Period: | 677.6 minutes |
| Apsis: | gee |
Kosmos 2501 (ru|Космос 2501 meaning Cosmos 2501), also known as Glonass-K1 No.12L is a Russian navigation satellite which was launched in 2014. The second Glonass-K satellite to be launched, it is the second of two Glonass-K1 spacecraft which will serve as prototypes for the operational Glonass-K2 spacecraft.[2]
Kosmos 2501 is a 935kg (2,061lb) satellite, which was 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 will broadcast signals in the L1, L2 and L3 navigation bands for Russian military and commercial users.[2] In addition to its navigation payloads, the satellite also carries a Cospas-Sarsat search and rescue payload.[2]
The satellite is located in a medium Earth orbit with a perigee of, an apogee of, and 64.8° of inclination.[3] It is equipped with two solar panels to generate power, and is expected to remain in service for ten years.
Kosmos 2501 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 21:52:26 UTC on 30 November 2014.[4] The launch successfully placed the satellite into a Medium Earth orbit. It subsequently received its Kosmos designation, and the International Designator 2014-075A. The United States Space Command assigned it the Satellite Catalog Number 40315.