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ISRO to launch IRNSS navigation sat; countdown ongoing

countdown began at 8.04 p.m. on Tuesday

Despite the GSAT-6A setback or so it seems for now, the Indian Space Research Organization has begun a 32-hour countdown for Thursday’s early launch of the IRNSS-1L navigation satellite.

The countdown is progressing smoothly at the Sriharikota rocket port, it was confirmed by the ISRO sources.

The countdown began at 8.04 p.m. on Tuesday.

The latest IRNSS satellite is weighing 1,425-kg satellite and part of the Indian Regional Navigation Satellite System (IRNSS).

It will be launched on board Polar Satellite Launch Vehicle (PSLV) rocket XL variant.

This will be the ninth of the IRNSS satellite series and will be a replacement for IRNSS-1A as its rubidium atomic clocks have failed. The atomic clocks are important to provide the accurate positional data.

The Rs 1,420-crore Indian satellite navigation system NavIC consists of nine satellites — seven in orbit and two as substitutes.

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