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ISRO’s PSLV-C31 places IRNSS-1E satellite in orbit
Taking yet another step to put India in the company of selected nations which have their own navigation systems, the Indian Space Research Organisation (ISRO) successfully placed in orbit IRNSS-1E, the fifth of the seven satellites that would form a constellation of navigation satellite network. PSLV-C31 (Polar Satellite Launch Vehicle) carrying 1,425 kg IRNSS-1E (Indian Regional Navigation Satellite System) lifted off from the second launch pad at the Satish Dhawan Space Centre in Sriharikota This was PSLV's 33rd flight.
As in the previous four launches, Isro used an XL version of the rocket. Around 20 minutes after lifting off from Sriharikota, PSLV-C31 placed IRNSS-1E in an inclined geosynchronous orbit. IRNSS-1E has two types of payloads - a navigation payload which will transmit navigation service signals to the users and a ranging payload consisting of a C-band transponder which facilitates accurate determination of the range of the satellite. The satellite also has a highly accurate rubidium atomic clock and a corner cube retro reflectors for laser ranging.
The first four satellites in the series, which Isro launched in the past, are functioning from their designated orbits. The space agency says three more satellites, including the one that was launched would make the system more accurate and efficient. The next two IRNSS satellites 1F and 1G are likely to be launched in the coming months.