Kosmos 2471
Kosmos 2471, also known as Glonass-K1 No.11L is a Russian navigation satellite which was launched in 2011. The first Glonass-K satellite to be launched, it is one of two Glonass-K1 spacecraft which will serve as prototypes for the operational Glonass-K2 spacecraft.
Kosmos 2471 is a 935 kg 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. In addition to its navigation payloads, the satellite also carries a Cospas-Sarsat search and rescue payload.
The satellite is located in a medium Earth orbit with an apogee of, a perigee of, and 64.8° of inclination. It is equipped with two solar panels to generate power, and is expected to remain in service for ten years. It is expected to enter service by the end of 2011.
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. 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.
