ISRO to Launch 100 Foreign, 3 Indian Satellites in February

Indian Space Research Organisation (ISRO) is all set to launch 103 satellites, 100 of them foreign, in one go aboard the rocket PSLV-C37, which will be placed in their respective orbits in different directions.

The operation of separating them by angle and time will be crucial so that they never collide with each other in different orbits. The satellites are expected to have a relative velocity of one metre per second to enable lofting off in separate directions.

The relative velocity ensures that once the first satellite gets launched, it will veer off at a relatively faster velocity than the second one, keeping the distance higher, even if their orbit remains the same.

The launch vehicle PSLV-37 is expected to be launched in the first week of February from SDSC SHAR, Sriharikota and reach the orbit, pause for a while for the disturbances to die down and prepare for separation.

At an orbital altitude of 500 km, it takes 90 minutes to complete one orbit and the time is enough for lofting off the 103 satellites. The launch will also take Cartosat-2 Series Satellite, meant for earth observation.

The last launch vehicle PSLV-C36 carried aboard RESOURCESAT-2A on Dec. 07, 2016 successfully. The total number of satellites launched by India’s workhorse launch vehicle PSLV including the last one on Dec. 7, 2016, has reached 122, of which 43 are Indian and the remaining 79 are foreign.

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