Engineering:GSAT-12

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GSAT-12
Mission typeCommunications
OperatorISRO
COSPAR ID2011-034A
SATCAT no.37746
Mission durationPlanned: 8 years
Duration: 11 years, 8 months, 8 days
Spacecraft properties
Launch mass1,412 kilograms (3,113 lb)
Dry mass559 kilograms (1,232 lb)[1]
Start of mission
Launch date15 July 2011, 11:18 (2011-07-15UTC11:18Z) UTC
RocketPSLV-XL C17
Launch siteSatish Dhawan SLP
ContractorISRO
End of mission
DisposalGraveyard orbit
DeactivatedMarch 2023
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Longitude48°E (Relocated: 19 Mar 2021.)
83°E (till 9 Feb 2021)
Perigee altitude35,782 kilometres (22,234 mi)
Apogee altitude35,803 kilometres (22,247 mi)
Inclination0.01 degrees
Period23.93 hours
Epoch25 December 2013, 01:49:32 UTC[2]
Transponders
Band12 Extended C band
← GSAT-8
GSAT-10 →
 

GSAT-12 was a communication satellite designed and developed by the Indian Space Research Organisation. It was the second satellite to be launched and placed on a GTO using PSLV.[3]

Satellite

GSAT-12 was considered to be a replacement of the aged satellite INSAT-3B. It provided services like tele-education, tele-medicine, disaster management support and satellite internet access.[4]

Payloads

GSAT-12 was equipped with 12 Extended C-band transponders.

Launch

GSAT-12 was launched onboard PSLV-XL C17 from second launch pad of Satish Dhawan Space Centre on July 15, 2011.[5] The tentative life of satellite was 8 years.[6][7]

Replacement and relocation

While GSAT-12 was still operational a replacement satellite CMS-01(formerly GSAT-12R) was launched on 17 December 2020.[8] GSAT-12 was relocated from 83°E slot to 48°E slot on 19 March 2021.[9]

End of mission

In March 2023 GSAT-12 was retired from its operational service. After seven maneuvers to raise the satellite to a circular graveyard orbit, 390 km above GEO belt.[10][11][12]

References

  1. ↑ "UCS Satellite Database". Union of Concerned Scientists. http://www.ucsusa.org/assets/documents/nwgs/UCS_Satellite_Database_9-1-13.txt. 
  2. ↑ Peat, Chris (25 December 2013). "GSAT 12 - Orbit". Heavens Above. http://www.heavens-above.com/orbit.aspx?satid=37746. 
  3. ↑ "GSAT-12/12R". Gunter Space Page. https://space.skyrocket.de/doc_sdat/gsat-12.htm. 
  4. ↑ "GSAT-12 reaches its home in a circular geo-synchronous orbit". The Hindu. Jul 15, 2011. http://www.thehindu.com/news/national/gsat12-reaches-its-home-in-a-circular-geosynchronous-orbit/article2260309.ece. 
  5. ↑ "ISRO successfully launches latest communication satellite GSAT-12". Economic Times. Jul 15, 2011. http://articles.economictimes.indiatimes.com/2011-07-15/news/29777953_1_gsat-5p-communication-satellite-gsat12. 
  6. ↑ "GSAT-12". space.skyrocket.de. http://space.skyrocket.de/doc_sdat/gsat-12.htm. 
  7. ↑ "GSAT-12 powered by PSLV is ready to launch". engineersworldonline.com. http://engineersworldonline.com/GSAT-12.html. 
  8. ↑ "ISRO gearing up for rocket launches with Virtual Launch Control Centre". The Tribune. 5 October 2020. https://www.tribuneindia.com/news/schools/isro-gearing-up-for-rocket-launches-with-virtual-launch-control-centre-151412. 
  9. ↑ "Historical satellite position data for GSAT-12 for the month of March 2021". https://www.satellite-calculations.com/Satellite/getpositionhistory.php?37746?archive/2021/March/2021_March_. 
  10. ↑ "Monthly Summary of Department of space for the month of March 2023". 20 April 2023. https://www.isro.gov.in/media_isro/pdf/Monthly_summary/MonthlySummar_March2023.pdf. "The post mission disposal of GSAT-12 was successfully carried out through 7 manoeuvres to raise the satellite to a circular super-GEO synchronous orbit 390 km above GEO belt." 
  11. ↑ "Historical satellite position data for GSAT-12 for the month of March 2023Satellite launced: 2011-07-15". https://www.satellite-calculations.com/Satellite/getpositionhistory.php?37746?archive/2023/March/2023_March_. 
  12. ↑ "Post Mission Disposal of GSAT-12". https://www.isro.gov.in/PostMissionDisposal_ofGSAT_12.html. 



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