Engineering:INSAT-4A

From HandWiki
Short description: Communications satellite
INSAT 4A
Render of INSAT-4A spacecraft in deployed configuration.jpg
INSAT-4A spacecraft in deployed configuration
Mission typeCommunications
OperatorINSAT
COSPAR ID2005-049A
SATCAT no.28911
WebsiteINSAT 4A
Mission durationPlanned: 12 years
Achieved: 13 years, 9 months, 29 days
Spacecraft properties
BusI-3K
ManufacturerISRO
Launch mass3,081 kilograms (6,792 lb)
Dry mass1,386 kilograms (3,056 lb)[1]
Dimensions2.8 x 1.7 x 2.0 m
Power5,922 watts
Start of mission
Launch date21 December 2005, 22:33 (2005-12-21UTC22:33Z) UTC
RocketAriane 5GS
Launch siteKourou ELA-3
ContractorArianespace
End of mission
DisposalMoved to a graveyard orbit
Deactivated21 October 2019 (2019-10-22)[2]
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Slot83° East ( [ ⚑ ] : 0°N 83°E / 0°N +83°E / 0; +83)
Period24 hours
Transponders
Band12 Ku band
12 C-band
Bandwidth36 megahertz
TWTA power140 & 63 watts
EIRP51 & 38 dbW
 

INSAT-4A was the first one in the INSAT-4 Satellites series, providing services in the Ku and C band frequency bands. At the time of launch, it was the heaviest satellite India had produced. The Ku transponders cover the Indian main land and C-Band transponders cover an extended area. It has a dozen Ku transponders and another dozen of C-band transponders. This spacecraft was placed at 83°E along with INSAT-2E and INSAT-3B, by Ariane launch vehicle (ARIANE5-V169).[3][4][5][6]

Overview

INSAT-4A was a communication satellite intended for providing high quality television, telecommunication, broadcasting services and was the first satellite to be launched in the INSAT-4 series.

Launch

INSAT-4A was launched by an Ariane 5, produced by Arianespace, on 21 Dec 2005 at 22.33 UTC[7][8] from Kourou, French Guiana. It was placed into a Geosynchronous Transfer Orbit (GTO), 30 minutes after lift-off in 3-axis stabilized mode, with a perigee of 859 km and an apogee of 36,055 km. Its co-passenger on board was Meteosat-9 of EUMETSAT.

Payload

  • 12 Ku band transponders. It was being used by Tata Sky.
  • 12 C-band transponders

End Of Life and Replacement

The satellite was placed in the graveyard orbit on 21 October 2019 after almost 14 years in service.[2] A replacement satellite GSAT-30 was launched on 21:05 UTC, 16 January 2020 aboard Ariane 5 VA251.[9][10]

References

  1. ↑ "Salient features of INSAT-4A". https://www.ursc.gov.in/communication/html/insat-4a.jsp. 
  2. ↑ 2.0 2.1 "Historical satellite position data for INSAT-4A for the month of October 2019". https://www.satellite-calculations.com/Satellite/getpositionhistory.php?28911?archive/2019/October/2019_October_. 
  3. ↑ "Insat 4A, 4B". http://space.skyrocket.de/doc_sdat/insat-4a.htm. 
  4. ↑ "Insat-4A - Isro". http://www.isro.gov.in/Spacecraft/insat-4a. 
  5. ↑ "SALIENT FEATURES OF INSAT-4A". http://www.isac.gov.in/communication/html/insat-4a.jsp. 
  6. ↑ "Space India, October 2005 - March 2006". https://www.isro.gov.in/media_isro/pdf/ResourcesPdf/SpaceIndia/publication(7).pdf. 
  7. ↑ "Ariane: 5 for 5 in 2005, Successful launch of Insat 4A and MSG-2" (in en-US). https://www.arianespace.com/press-release/ariane-5-for-5-in-2005-successful-launch-of-insat-4a-and-msg-2/. 
  8. ↑ "INSAT-4A Launched Successfully". 2006-05-07. http://www.isro.org/pressrelease/Dec22_2005.htm. 
  9. ↑ "Press Release: India's communication satellite GSAT-30 launched successfully - ISRO". https://www.isro.gov.in/update/17-jan-2020/press-release-india%E2%80%99s-communication-satellite-gsat-30-launched-successfully. 
  10. ↑ "Flight VA251 – first Arianespace mission of 2020 a success: EUTELSAT KONNECT and GSAT-30 in orbit" (in en-US). https://www.arianespace.com/press-release/flight-va251-first-arianespace-mission-of-2020-a-success-eutelsat-konnect-and-gsat-30-in-orbit/. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Engineering:INSAT-4A&oldid=3260368"