Luch 5B

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Luch 5B
File:CeBIT 2011 Samstag PD 108.JPG
Model of Luch 5A at CeBIT in 2011
Mission type Communications
Operator Roskosmos
COSPAR ID 2012-061A[1]
SATCAT № 38977[1]
Mission duration 10 years
Spacecraft properties
Bus Ekspress-1000A[2]
Manufacturer JSC Information Satellite Systems
Launch mass 1,148 kilograms (2,531 lb)
Start of mission
Launch date 2 November 2012, 21:04 (2012-11-02UTC21:04Z) UTC
Rocket Proton-M/Briz-M
Launch site Baikonur 81/24[1]
Orbital parameters
Reference system Geocentric
Regime Geosynchronous

Luch 5B (Russian: Луч-5Б meaning ray and sometimes transliterated as Loutch-5B) is a Russian Luch relay satellite which will transmit data from the Russian Orbital Segment of the International Space Station, and from other satellites in low Earth orbit. It will be in geosynchronous orbit.


Luch 5B is one of a planned three Luch relay satellites. Luch 5A was launched on 11 December 2011 and Luch 5V is expected in 2013 or 2014.[2] They are dual purpose satellites with both military and civil uses, and are similar to those in the US Tracking and Data Relay Satellite System.[3]

Luch 5B was built by JSC Information Satellite Systems using the Ekspress-1000A bus. It has 4 S and Ku band channels with repeaters manufactured by Thales Alenia Space and other equipment manufactured by Sumitomo. The Ku band antenna operates at up to 150 Mbit/s and the S band antenna at up to 5 Mbit/s. The satellite also has a "laser-radio channel".[2][4][4][5][6][7][8]

The satellite is designed to relay data from the ISS, satellites in low earth orbit and rocket launch vehicles.[5][7]

Luch 5B is located at 16° W.


Luch 5B was launched on 2 November 2012 with satellite Yamal 300K. It was launched from Baikonur Cosmodrome launchpad 81/24 by a Proton-M rocket with a Briz-M upper stage. It was launched at 21:04 UTC and after four burns of the Briz-M upper stage it was placed into geosynchronous transfer orbit at 06:33 UTC on 3 November.[1]

The launch was delayed from 30 August 2012 due to the failure of the launch of Telkom-3 and Ekspress MD2 in August 2012.[1]


  1. 1.0 1.1 1.2 1.3 1.4 "2012-061". 2012. Retrieved 2012-11-03.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  2. 2.0 2.1 2.2 "Luch 5B". Gunter's Space Page. 2010. Retrieved 2012-11-03.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. "Russian Satellites Reach Orbit – Space Agency". RIA Novosti. 2012-11-03. Retrieved 2012-11-03.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. 4.0 4.1 "Loutch-5A and Loutch-5B DRSs". ISS Reshetnev. 2012-11-03. Retrieved 2012-11-04.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  5. 5.0 5.1 "Loutch-5B and Yamal-300K successfully launched". ISS Reshetnev. 2012-11-03. Retrieved 2012-11-04.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  6. "Thales Alenia Space to supply repeaters equipment for Russian satellites Loutch-5A and Loutch-5B". Thales Alenia Space. 2007-06-19. Retrieved 2012-11-04.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  7. 7.0 7.1 "Proton Successfully Delivers Loutch 5B and Yamal 300K Satellites to Orbit". Khrunichev. 2012-11-03. Retrieved 2012-11-04.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  8. "Luch satellite". Russian Space Web. 2012-10-23. Retrieved 2012-11-04.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>