The GSAT-19 satellite was constructed by ISRO based on their standard I-3K bus and carries Ka/Ku-band high throughput communication transponders as well as a Geostationary Radiation Spectrometer (GRASP) payload to monitor and study the nature of charged particles and the influence of space radiation on satellites and their electronic components.

GSAT-19 also features certain advanced spacecraft technologies including miniaturised heat pipe, fibre optic gyro, Micro Electro-Mechanical Systems (MEMS) accelerometer, Ku-band TTC-transponder as well an indigenous Lithium-ion Battery.

The satellite had a lift-off mass of 3,136kgs and was launched on ISRO’s GLSV Mk. III-D1 launch vehicle on June 5th, 2017 from the Satish Dhawan Space Centre (Sriharikota) launch base in India.