INSAT-4A

INSAT 4A
INSAT-4A spacecraft in deployed configuration
Mission typeCommunications
OperatorINSAT
COSPAR ID2005-049A Edit this at Wikidata
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]

  1. ^ "Salient features of INSAT-4A". Archived from the original on 28 October 2019. Retrieved 28 October 2019.
  2. ^ "Historical satellite position data for INSAT-4A for the month of October 2019". Retrieved 28 October 2019.
  3. ^ "Insat 4A, 4B".
  4. ^ "Insat-4A - Isro". Archived from the original on 2015-09-27. Retrieved 2017-01-29.
  5. ^ "SALIENT FEATURES OF INSAT-4A". www.ursc.gov.in. Archived from the original on 15 September 2015. Retrieved 2020-01-16.
  6. ^ "Space India, October 2005 - March 2006" (PDF).