| Mission type | Multipurpose communication |
|---|---|
| Operator | INSAT |
| COSPAR ID | 1997-027B |
| SATCATno. | 24820 |
| Mission duration | 7 Years |
| Spacecraft properties | |
| Manufacturer | ISRO |
| Launch mass | 2,079 kg (4,583 lb) |
| Dry mass | 995 kg (2,194 lb) |
| Power | 1650watts |
| Start of mission | |
| Launch date | 4 June 1997 |
| Rocket | Ariane-4 |
| Launch site | French Guiana |
| End of mission | |
| Deactivated | 4 Oct, 1997 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Longitude | 93.5 Degree East |
INSAT-2D was an Indiancommunications satellite. Launched on 4 June 1997, and similar toINSAT-2C, INSAT-2D went out of order on October 4, 1997, because of a power inconsistency problem and was later replaced byINSAT-2DT, an in-orbit satellite which was previously known as ARABSAT-1C. The main aim of the satellite was improved communication.[1][2] In the INSAT-2 (Indian National Satellite System) series, INSAT-2D was the fourth consecutive communication satellite. The satellite was launched using anAriane 4 rocket fromFrench Guiana.[2]
The satellite was placed intogeostationary orbit at an inclination of 93.5 degrees east.[3] INSAT-2D's lift-off mass was 2,079 kg (4,583 lb) withpropellants of which 995 kg (2,194 lb) were the dry weight.[1] The satellite was expected to have a nominal lifespan of around 7–9 years.[4][3] But it became inoperable just four months later on 4 October 1997, due to a power bus anomaly and associated problems, most likely a short circuit.[5] The onboard power of the satellite was estimated to be 1,650 watts.[1]
Its communication payload consisted of 16C-bandtransponders (extended C-band, forfixed-satellite service), two high-power C-band transponders (forbroadcasting-satellite service, BSS), one S-band transponder (for BSS), one C/S-band mobile communication transponder, and threeKu-band transponders.[1][2][3][4]
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