NVS-03 Completes First Orbit Manoeuvre of NavIC Mission

India's own navigation constellation has gained another spacecraft. The Indian Space Research Organisation (ISRO) carried out the GSLV-F18/NVS-03 flight late on 30 October 2026, lifting off at 23:51 hours from the Satish Dhawan Space Centre at Sriharikota. The satellite has since begun climbing towards the orbit it will work from.

From transfer orbit to its slot

The rocket left NVS-03 in a Geosynchronous Transfer Orbit. Such a path is elliptical: its nearest point to Earth is low, while the farthest point of a standard transfer orbit sits roughly 35,786 km above the surface. Lifting a spacecraft out of that ellipse is the work of an apogee motor, and on this satellite the task fell to a Liquid Apogee Motor, a chemical rocket engine. The first of those burns was finished on 31 October 2026 at 16:48 hours. Further manoeuvres are planned before the satellite settles into the slot set aside for it at 111.75 degrees East.

Why this satellite matters

NVS-03 is the third member of a five-satellite second-generation series running from NVS-01 to NVS-05, built to renew and widen NavIC. The flight was also the 20th mission of the Geosynchronous Satellite Launch Vehicle. The spacecraft broadcasts on the L1, L5 and S bands, and putting L1 alongside the older L5 and S pair widens the range of receivers able to use the service. It carries an atomic clock built in India together with bought-in clocks; precise timekeeping is what lets a receiver turn signal travel time into a position on the ground.

NavIC in brief

NavIC, once called the Indian Regional Navigation Satellite System, supplies position, navigation and timing data over the country and about 1,500 km past its boundary. The original design used seven satellites, three of them in geostationary orbit and four in inclined geosynchronous orbit, backed by ground stations working round the clock. Two grades of service are offered. The open Standard Positioning Service serves ordinary users and works alongside GPS, Glonass, Galileo and BeiDou signals; the encrypted Restricted Service is kept for authorised strategic users.

The launch vehicle

GSLV is a three-stage rocket whose distinguishing feature is an Indian-built cryogenic upper stage burning liquid hydrogen with liquid oxygen, which took the place of the Russian-supplied stage flown on earlier missions. Its strap-on boosters, known as the L-40, run on liquid propellant. This vehicle stood roughly 50 metres tall, weighed about 420 tonnes at lift-off, carried a metallic payload fairing 3.4 metres across and a satellite of around 2,250 kg.