The NVS-1 is part of the second-generation of satellites called Navigation Indian Constellation (NavIC), which succeeds the first-generation Indian Regional Navigation Satellite System (IRNSS).
Each of the seven satellites currently in the Indian Regional Navigation Satellite System (IRNSS) constellation, operationally named NavIC, weighed much less around 1,425 kg at liftoff. They all rode the lighter PSLV, ISRO’s workhorse launch rocket.
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