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°N83°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]
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 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.
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]
The Indian National Satellite SystemINSAT, is a series of multipurpose geostationary satellites launched by ISRO to satisfy telecommunications, broadcasting, meteorology, and search and rescue operations. Commissioned in 1983, INSAT is the largest domestic communication system in the Indo-Pacific Region. It is a joint venture of the Department of Space, Department of Telecommunications, India Meteorological Department, All India Radio and Doordarshan. The overall coordination and management of INSAT system rests with the Secretary-level INSAT Coordination Committee.
The GSAT satellites are India's indigenously developed communications satellites, used for digital audio, data and video broadcasting. As of 5 December 2018, 20 GSAT satellites of ISRO have been launched out of which 14 satellites are in service.
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INSAT 3E is a defunct communication satellite built by Indian Space Research Organisation. It was launched on September 28, 2003, from the European Space Agency's spaceport in French Guiana on board the Ariane rocket. The satellite had a launch mass of 2750 kilograms. It is the 4th satellite launched in the INSAT-3 series for INSAT. It was designed for providing high-speed communication, Television, VSAT & Tele-education services and was an important landmark in Indian Space Programme.
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GSAT-16 is the 11th Indian communication satellite, meant to increase the number of transponders available for satellite-based telecommunication, television, and VSAT services in India. GSAT-16 is similar to GSAT-15 with each satellite weighing 3,150 kg and having power generation capacity of 6.8 kW.
INSAT-4B was an Indian communications satellite which forms part of the Indian National Satellite System. Launched in 2007, it was placed in geostationary orbit at a longitude of 93.48° East.
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GSAT-18 is an Indian communications satellite. Built by ISRO and operated by INSAT, it carries 24 C-band, 12 extended C-band, and 12 Ku-band transponders.
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