Kosmos 2501


Kosmos 2501
CeBit 2011 - Glosnass-K Satellite Model 11.jpg
Model of a GLONASS-K satellite
Mission typeNavigation
COSPAR ID2014-075A
SATCAT no.40315
Mission duration10 years
Spacecraft properties
SpacecraftGlonass No.702K
Uragan-K1 No. 12L[1]
Spacecraft typeUragan-K1
ManufacturerISS Reshetnev
Launch mass935 kg
Start of mission
Launch date30 November 2014, 21:52:26 (2014-11-30UTC21:52:26Z) UTC
RocketSoyuz-2-1b / Fregat-M
Launch sitePlesetsk, Site 43/4
Orbital parameters
Reference systemGeocentric
RegimeMedium Earth
Perigee altitude19155 km
Apogee altitude19199 km
Period677.6 minutes

Kosmos 2501 (Russian: 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 935 kilograms (2,061 lb) 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 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.

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.


  1. ^ McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 6 March 2020.
  2. ^ a b c Krebs, Gunter. "Uragan-K1 (GLONASS-K1)". Gunter's Space Page. Retrieved 30 November 2014.
  3. ^ McDowell, Jonathan. "Jonathan's Space Report Issue 706". Jonathan's Space Report. Retrieved 30 November 2014.
  4. ^ Zak, Anatoly. "GLONASS-K No. 12 satellite". RussianSpaceWeb. Retrieved 30 November 2014.