At 1031 GMT on 10 March 2016, India launched the latest satellite, IRNSS R-1F, in its IRNSS (Indian Regional Navigation Satellite System) satellite constellation from the Satish Dahwan Space Centre, in Sriharikota, India. The launch was by a PSLV-XL launch vehicle and the 1425kg spacecraft separated from the rocket’s fourth state at 1051 GMT. The spacecraft is built by Indian Space Research Organisation (ISRO) and uses its I-1K bus design. The satellite will operate from a highly inclined geosynchronous Earth orbit.