Orbital Period (minutes)
IRNSS-1I is the eighth satellite in the Indian Regional Navigational Satellite System (IRNSS) series of satellites,In actual IRNSS - 1I is the ninth satellite that launched in IRNSS constellation but it is counting as eighth satellite because IRNSS - 1I is an eighth satellite that has launched successfully in IRNSS constellation. The satellite will help in completing the satellite based navigation system of India which is currently under development. The IRNSS space segment consists of seven satellites. After the failure of all three Rubidium Atomic clocks on-board IRNSS-1A and the failure of IRNSS-1H to separate from the heat shield of the launch vehicle, IRNSS constellation remains incomplete without this satellite. This independent regional navigation satellite system is developed by India and is similar to Global Positioning System (GPS) of the US, which has 31 satellites currently in orbit.