IRS-1B was the second satellite in the Indian Remote Sensing (IRS) program, developed and launched by the Indian Space Research Organisation (ISRO) into a polar Sun-synchronous orbit on 29 August 1991 from the Soviet Cosmodrome at Baikonur. This mission was carried out in Vostok launch vehicle and has a mass of 975 Kg. It consists of gyroscope for better orientation sensing, and has time tagged commanding (IRS-1A) facility for more flexibility in camera operation and line count information for better data product generation. The satellite's data contributed to advancements in agricultural practices, forest management, land-use planning, water resources management, and disaster response in India.