Kosmos 2501 (Russian: Космос 2501 meaning Cosmos 2501), also known as Glonass-K1 No.12L is a Russian navigationsatellite 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 935-kilogram (2,061 lb) satellite, which was built by ISS Reshetnev based on the Ekspress-1000Asatellite 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 19,155 kilometres (11,902 mi), an apogee of 19,199 kilometres (11,930 mi), 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.
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).
