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ISRO launches GSAT 31 satellite from French Guiana

Date: 06 February 2019 Tags: Space

Indian Space Research Orgnisation (ISRO) successfully launched communication satellite GSAT-31 from French Guiana. It was launched onboard of Ariane-5 rocket along with Saudi Geostationary Satellite Hellas Sat 4 from Kourou Launch Base. This was 23rd successful launch of Indian satellite by Ariane vehicle. In December, 2018 Arianespace had launched India’s heaviest satellite Gsat-11 weighing 5,854 kg


  • It has lift-off mass of 2,535-kg. It will replace dying satellite INSAT-4CR and will have mission life of 15 years. It will be located at Geosynchronous Transfer Orbit (GTO).
  • It is India’s 40th communication satellite and derives its heritage from ISROs earlier INSAT/GSAT satellite series.
  • It has been configured on ISRO's enhanced I-2K Bus for utilising maximum bus capabilities of this type to offer seamless services.
  • Eleven such satellites are already in operation, serving nation in space. They together make one of the largest constellations of its class communication satellites in the world.


  • It will provide continuity to operational services on some of in-orbit satellites and augment Ku-band transponder capacity in Geostationary Orbit.
  • It will also provide wide beam coverage to facilitate communication over large oceanic region comprising large part of Arabian Sea, Bay of Bengal and Indian Ocean using wide band transponder.
  • It will also provide transponder capacity for DTH television and connectivity to services like VSATs for ATMs, stock-exchanges, Digital Satellite News Gathering DSNG and e-governance applications.
  • It will also be used for cellular backhaul connectivity and many such applications of emerging telecommunication applications.