1.IRNSS consists of constellation of seven satellites of which three are geostationary and four are non-geostationary.
2.Till date 5 satellites of it has been launched.
3.It will provide mapping and tracking services.
4.It was launched on board of PSLV-C30 rocket from Satish Dhawan Space Centre (SHAR), Sriharikota in Andhra   Pradesh.