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What is 'Rohini-200'?
Rohini is a series of sounding rockets developed by the Indian Space Research Organisation (ISRO) for meteorological and atmospheric study. These sounding rockets are capable of carrying payloads of 2 to 200 kilograms (4.4 to 440 lb) between altitudes of 100 to 500 kilometres (62 to 310 mi). The ISRO currently uses RH-200, RH-300, RH-300 Mk-II and RH-560 Mk-II rockets, which are launched from the Thumba Equatorial Rocket Launching Station (TERLS) in Thumba and the Satish Dhawan Space Center in Sriharikota.

RH-75

The RH-75, the first sounding rocket developed by India, was launched from TERLS on November 20, 1967. It weighed 32 kilograms (71 lb), had a diameter of 75 millimetres (3.0 in) and flew 15 times between November 1967 and September 1968.


RH-125

This rocket was launched on October 9, 1971 from Sriharikota. It was a two-stage rocket using a solid propellant, carrying a 7 kilograms (15 lb) payload to 19 kilometres (12 mi) in altitude. It flew twice between January 1970 and October 1971.


RH-200

The RH-200 has a maximum launch altitude of 70 kilometres (43 mi).[5] A variant, the RH-300 Mk-II, has a maximum launch altitude of 116 kilometres (72 mi).[5] Another variant, the RH-560 Mk-II, can reach a maximum launch altitude of 548 kilometres (341 mi).


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