INSAT-3E

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INSAT-3E
Insat3e.jpg
Mission type Communications
Operator ISRO
COSPAR ID 2003-043E
SATCAT № 27951
Mission duration 10 years, 5 months, 5 days
Spacecraft properties
Bus I-2K
Manufacturer ISRO
Launch mass 2,750 kilograms (6,060 lb)
Dimensions 2.0×1.77×2.8 metres (6.6×5.8×9.2 ft)
Power 2,400 watts
Start of mission
Launch date 27 September 2003, 23:14:46 (2003-09-27UTC23:14:46Z) UTC[1]
Rocket Ariane 5G V162
Launch site Kourou ELA-3
Contractor Arianespace
End of mission
Disposal Moved to a graveyard orbit
Orbital parameters
Reference system Geocentric
Regime Geostationary (till 2014)
Graveyard Orbit
Longitude 55° east (till 2014)
Periapsis 35,764 kilometres (22,223 mi) (till 2014)
Apoapsis 35,819 kilometres (22,257 mi) (till 2014)
Inclination 0.06 degrees
Period 23.93 hours
Epoch 30 October 2013, 02:33:58 UTC[2]
Transponders
Band 24 C-band
12 Extended C-band

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 of ISRO.It was designed for providing high-speed communication, Television, VSAT & Tele-education services and was an important landmark in Indian Space Programme.

In April 2014, almost eleven years after being launched, the satellite ran out of oxidizer and a few days later, was decommissioned by the ISRO. In a few days time, it will be moved to a graveyard orbit.[3]

Launch[edit]

INSAT 3E was launched from Kourou, French Guyana on September 28, 2003 on European consortium Ariane space's Ariane 5-V162 launcher along with two other satellites viz. Eurobird 3 of Eutelsat and SMART-1 of European Space Agency at at 4.44 am IST.It was placed into a Geosynchronous Transfer Orbit (GTO) 30 minutes after the lift-off, in 3-axis stabilised mode, with a perigee of 649 km and an apogee of 35,923 km and an inclination of 7 deg. with respect to the equator. Its Master Control Facility(MCF) is at Hassan,Karnataka(India).

Payload[edit]

INSAT 3E payload consists of C-band and extended C-band tranponders. It has 24 C-band transponders, having India beam coverage providing an Edge Of Coverage-Effective Isotropic Radiated Power (EOC-EIRP) of 38.5 dBW and 12 upper extended C-band transponders having India beam coverage providing an EOC-EIRP of 38 dBW.

Retirement[edit]

On April 1, 2014, Dr. K. Radhakrishnan, while speaking to the Indian English newspaper "The Hindu", said that INSAT 3E had been decommissioned. The newspaper reported that a few days before, the satellite had run out of the on-board oxidiser, which is essential to burn the fuel that kept it Earth-locked (fixed over India) and running its daily functions. The ISRO had apparently expected that the satellite, positioned at 55 degrees E longitude, would last a few more months and that it would be smoothly replaced with GSAT-16. The Master Control Facility at Hassan is due to move the expired satellite into a graveyard orbit.[3]

Services[edit]

  • Television
  • VSAT
  • Communication
  • Tele-education providing education to the poor and needy
  • Tele-medicine administering medical services from the metros to villages & remote areas

References[edit]

[4] [5] [6] [7] [8] [9] [10]

External links[edit]