To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
Show all languages
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.

From Wikipedia, the free encyclopedia

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.
This page was last edited on 23 January 2021, at 04:30
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.