 INSAT-4A spacecraft in deployed configuration | |
| Mission type | Communications |
|---|---|
| Operator | INSAT |
| COSPAR ID | 2005-049A |
| SATCAT no. | 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 UTC |
| Rocket | Ariane 5GS |
| Launch site | Kourou ELA-3 |
| Contractor | Arianespace |
| End of mission | |
| Disposal | Moved to a graveyard orbit |
| Deactivated | 21 October 2019[2] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Slot | 83° East (0°N 83°E / 0°N +83°E) |
| 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 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]
- ^ "Salient features of INSAT-4A". Archived from the original on 28 October 2019. Retrieved 28 October 2019.
- ^ "Historical satellite position data for INSAT-4A for the month of October 2019". Retrieved 28 October 2019.
- ^ "Insat 4A, 4B".
- ^ "Insat-4A - Isro". Archived from the original on 2015-09-27. Retrieved 2017-01-29.
- ^ "SALIENT FEATURES OF INSAT-4A". www.ursc.gov.in. Archived from the original on 15 September 2015. Retrieved 2020-01-16.
- ^ "Space India, October 2005 - March 2006" (PDF).