 INSAT-4A spacecraft in deployed configuration | |
| Mission type | Communications |
|---|---|
| Operator | INSAT |
| COSPAR ID | 2005-049A |
| SATCATno. | 28911 |
| Website | INSAT 4A |
| Mission duration | Planned: 12 years Achieved: 13 years, 9 months, 29 days |
| Spacecraft properties | |
| Bus | I-3K |
| Manufacturer | ISRO |
| Launch mass | 3,081 kilograms (6,792 lb) |
| Dry mass | 1,386 kilograms (3,056 lb)[1] |
| Dimensions | 2.8 x 1.7 x 2.0 m |
| Power | 5,922 watts |
| Start of mission | |
| Launch date | 21 December 2005, 22:33 (2005-12-21UTC22:33Z) UTC |
| Rocket | Ariane 5GS |
| Launch site | KourouELA-3 |
| Contractor | Arianespace |
| End of mission | |
| Disposal | Moved to a graveyard orbit |
| Deactivated | 21 October 2019 (2019-10-22)[2] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Slot | 83° East (0°N83°E / 0°N +83°E /0; +83) |
| Period | 24 hours |
| Transponders | |
| Band | 12 Ku band 12 C-band |
| Bandwidth | 36 megahertz |
| TWTA power | 140 & 63 watts |
| EIRP | 51 & 38 dbW |
INSAT-4A was the first one in theINSAT-4 Satellites series, providing services in theKu andC 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]
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.
INSAT-4A was launched by anAriane 5, produced byArianespace, on 21 Dec 2005 at 22.33 UTC[7][8] fromKourou,French Guiana. It was placed into a Geosynchronous Transfer Orbit (GTO), 30 minutes after lift-off in 3-axis stabilized mode, with aperigee of 859 km and anapogee of 36,055 km. Its co-passenger on board wasMeteosat-9 ofEUMETSAT.
The satellite was placed in the graveyard orbit on 21 October 2019 after almost 14 years in service.[2] A replacement satelliteGSAT-30 was launched on 21:05 UTC, 16 January 2020 aboardAriane 5 VA251.[9][10]
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