ISRO Completes Final Orbit Raising Operations of IRNSS-1I Navigation Satellite

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By Indo-Asian News Service | Updated: 16 April 2018 12:37 IST

The Indian Space Research Organisation (ISRO) has successfully carried out the fourth and final orbit raising operations of navigation satellite, IRNSS-1I, the space agency has said.

The orbit raising operation took place at 9.05pm on Sunday, the ISRO said.

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The achieved perigee height (nearest point to the earth) is 35,462.9 km and apogee height (farthest point to the earth) is 35,737.8 km.

The IRNSS-1I was launched on April 12.

After a flight lasting about 19 minutes, the Polar Satellite Launch Vehicle (PSLV) achieved a Sub Geosynchronous Transfer Orbit with a perigee of 281.5 km and an apogee of 20,730 km inclined at an angle of 19.2 degrees to the equator.

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At that point, the IRNSS-1I got separated from the rocket.

Following that ISRO carried out four orbit raising operations on April 13 (first and second), April 14 (third operation) and April 15.

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However, the ISRO did not provide any information for how many minutes the satellites' onboard motors were fired for raising the orbit.

 

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Further reading: Science, India, ISRO, IRNSS-1I
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