IRNSS-1E is the fifth NavIC navigation satellite. PSLV-C31 launched it from Sriharikota on 20 January 2016.
IRNSS-1E is the fifth of the seven satellites in the IRNSS (NavIC) space segment. IRNSS-1E carries two payloads. The navigation payload broadcasts NavIC signals in the L5 and S bands, timed by a rubidium atomic clock. The ranging payload is a C-band transponder that lets ground stations measure the satellite's distance precisely. It also has corner-cube retro-reflectors for laser ranging. You can see the NavIC fleet's estimated positions on the NavIC tracker.
It weighed 1,425 kg at lift-off and shares the design of IRNSS-1A to 1D.
PSLV-C31, the thirty-third PSLV flight, launched it from the Second Launch Pad at Sriharikota at 09:31 IST on 20 January 2016, using the PSLV-XL version. IRNSS-1E works from an inclined geosynchronous orbit tilted about 29°, like IRNSS-1A, 1B and 1D.
The public satellite catalogue lists IRNSS-1E as degraded.