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ISRO An Indian Polar Satellite Launch Vehicle (PSLV) rocket lifted off successfully on Thursday afternoon with the country’s seventh and final navigation satellite, ISRO IRNSS-1G, from the rocket port here. The PSLV-XL standing 44.4 metre tall and weighing 320 tonnes, tore into the afternoon skies at 12.50 p.m. breaking free of the earth’s gravitational pull.
ISRO Today  launches IRNSS-1G from Sriharikota

Named the Indian Regional Navigation Satellite System (IRNSS), it consists of a constellation of seven satellites of which six  ISROIRNSS-1A, IRNSS-1B, IRNSS-1C, IRNSS-1D, IRNSS-1E and IRNSS-1F- have already been put into orbit. The seventh satellite in the series – IRNSS-1G – weighing 1,425 kg is expected to soon join the other six.
Just over 20 minutes into the flight, the rocket would put ISRO IRNSS-1G into orbit at an altitude 497.8 km. The satellite’s life span is 12 years.
Till date, ISRO has launched six regional navigational satellites (IRNSS-1A, 1B, 1C, ID, 1E and 1F) as part of a constellation of seven satellites to provide accurate position information service to users across the country and the region.
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IRNSS-1F was launched on the ISRO’s trusted PSLV C32 on March 10. During the countdown, propellant filling operations would be taken up in the four-stage vehicle. The PSLV-C33, carrying IRNSS-1G, in its 35th flight, would be the XL variant that was used during launch of Mars Orbiter Mission, Chandrayaan-1, ASTROSAT besides the six IRNSS satellites.
ALSO READ: ISRO to launch record 22 satellites in single mission by May 2016
The 44.4 metre tall IRNSS-1G has a lift-off mass of 1,425 kg and would be launched in sub-Geosynchronous Transfer Orbit (sub GTO). It has a 12 year mission life.
Sriharikota, 28th April 2016
The Indian Space Research Organisation (ISRO) on Thursday launched PSLV-C33 to place India’s seventh and final navigation satellite IRNSS-1G in the orbit from Andhra Pradesh’s Sriharikota on Thursday.
The launch of the four-stage Polar Satellite Launch Vehicle (PSLV) took place at 12:50 pm from Satish Dhawan Space Centre.
The 54-hour countdown for the launch of ISRO workhorse began at 9.20 am on Tuesday. The satellite with a design life span of 12 years has two payloads for navigation and ranging.
ISRO has launched six regional navigational satellites (IRNSS-1A, 1B, 1C, ID, 1E and 1F) as part of a constellation of seven satellites to date to provide accurate position information service to users across the country and the region.
IRNSS-1F was launched on the ISRO’s trusted PSLV C32 on March 10.
During the countdown, propellant-filling operations will be taken up in the four-stage vehicle.
“In space science, our scientists have achieved many accomplishments. Through space science, lives of people can be transformed. We will determine our own paths powered by our technology with this successful launch. Its a great gift to people,” Prime Minister Narendra Modi said after the launch. — ANI

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