GSAT-11 in cleanroom 01.jpg
Mission typeCommunication
COSPAR ID2018-100B
SATCAT no.43824Edit this on Wikidata
Spacecraft properties
BusI-6K Bus
ManufacturerISRO Satellite Centre
Space Applications Centre
Launch mass5,854 kilograms (12,906 lb)
Power13.6 kilowatts
Start of mission
Launch date4 December 2018, 20:37 UTC[1]
RocketAriane 5 VA246
Launch siteGuiana Space Centre
ContractorArianespace, ESA
Orbital parameters
Reference systemGeocentric
Longitude74° East[2]
BandKu/Ka band
Bandwidth16 Gbps
← GSAT-29

GSAT-11 is an Indian geostationary communications satellite.[3][4] The 5854 kg[5] satellite is based on the new I-6K Bus and carry 40 transponders in the Ku-band and Ka-band frequencies (32 Ka × Ku-Band Forward Link Transponders and 8 Ku × Ka band Return Link Transponders), which are capable of providing up to 16 Gbit/s throughput.[5] GSAT-11 is India's heaviest satellite.[6]


Initially the satellite was planned to be launched in May 2018,[7][8] but was delayed after ISRO recalled it back to India from the launch site in French Guiana for additional checks weeks after ISRO lost communication to another communication satellite, the GSAT-6A, soon after its launch in March 2018.[9]

After the satellite was found fit for the launch, the new launch date had been set to 4 December 2018.[8][10] GSAT 11 was launched successfully from the European Spaceport, French Guiana (Guiana Space Center) on 20:37 UTC, 4 December 2018 along with GEO-KOMPSAT-2A of KARI.[11][1]


GSAT-11 was developed at the cost of Rs. 573.68 Crores and its launch was procured at cost of Rs. 810.94 Crores.[12][13][14] The payload consists of 40 high power Ku, Ka band transponders built at Space Applications Centre in Ahmedabad.[15]

See also


  1. ^ a b "Arianespace orbits GSAT-11 and GEO-KOMPSAT-2A for Indian and Korean space agencies: ISRO and KARI". Arianespace. Retrieved 2018-12-05.
  2. ^ "GSAT-11". Archived from the original on 7 January 2014. Retrieved 7 January 2014.
  3. ^ "India's heaviest satellite Gsat-11 is ready for launch".
  4. ^ "Cyclone clouds ISRO's GSAT-29 launch plan".
  5. ^ a b "GSAT-11 press kit" (PDF). 27 November 2018. Archived from the original (PDF) on 27 November 2018. Retrieved 27 November 2018.
  6. ^ "The Hindu Explains: GSAT-11, India's heaviest satellite".
  7. ^ Clark, Stephen (27 April 2018). "Concerns with Indian satellite postpone next Ariane 5 launch". Retrieved 5 December 2018.
  8. ^ a b "ISRO Clears Launch Date Of GSAT 11 On November 30". Headlines Today. 6 August 2018. Archived from the original on 6 August 2018. Retrieved 6 August 2018.
  9. ^ Clark, Stephen (27 April 2018). "Concerns with Indian satellite postpone next Ariane 5 launch". SpaceFlight Now. Retrieved 21 May 2018.
  10. ^ "Isro's heaviest sat launch from French Guiana on Nov 30: Sivan". The Times Of India. 6 August 2018. Retrieved 6 August 2018.
  11. ^ "GSAT-11 Mission - ISRO". Retrieved 2018-12-05.
  12. ^ "India's Most Powerful Satellite, 'The Big Bird', Launched Successfully". Retrieved 2018-12-05.
  13. ^ "Questions : Lok Sabha". Retrieved 2018-12-27.
  14. ^ "Loksabha Question no.2335" (PDF). 26 December 2018. Retrieved 2018-12-27.
  15. ^ K. Raghu (Jul 24, 2009). "Isro to launch GSAT-11 with 40 transponders in 2012". Live Mint. Retrieved March 20, 2013.

External links

  • Official GSAT-11 page