ISRO's NVS-03 settles into geosynchronous orbit after four engine burns; satellite healthy

The NVS-03 navigation satellite launched by the Indian Space Research Organisation (ISRO) on October 30, 2026, has reached its intended geosynchronous orbit, the space agency said in an update on Wednesday, November 4, 2026.

ISRO said four orbit-raising manoeuvres had been carried out successfully, with a cumulative burn of 6,164 seconds using the satellite's Liquid Apogee Motor (LAM), an engine used to lift a spacecraft from its initial elliptical path to its final circular orbit. Following these operations, the satellite is now in a geosynchronous orbit of 35,765 km by 36,196 km, at an inclination of 29.98 degrees.

A geosynchronous orbit is one in which a satellite's orbital period matches the Earth's rotation, allowing it to remain over roughly the same region. India's navigation satellites are placed in such orbits so that they can maintain steady coverage over the subcontinent.

The NVS-03 satellite was placed in a 170.3 km by 38,080 km orbit by the Geosynchronous Satellite Launch Vehicle (GSLV) on October 30. The orbit-raising exercises that followed gradually raised the satellite's path to its final operating altitude.

NVS-03 is the third satellite in the next-generation navigation satellite system planned to provide continuity of navigation services for the IRNSS series. The IRNSS constellation, known in India as NavIC (Navigation with Indian Constellation), is the country's regional satellite navigation system, designed to provide positioning and timing services over India and the surrounding region.

According to ISRO, the satellite carries an indigenous atomic clock along with procured clocks. Atomic clocks are central to satellite navigation, as they provide the precise timing signals on which position calculations are based.

NVS-03 also carries an L1 signal in addition to the L5 and S band signals. The addition of the L1 signal is intended to widen compatibility with commonly used civilian receivers, which typically track L1 signals from other global navigation systems. The satellite's coverage extends over the Indian land mass and a region extending 1,500 km around India's geopolitical boundary.

The space agency said the satellite's health is normal. It did not provide further details in the update.

The successful orbit-raising operations are significant in light of the difficulties faced with the previous satellite in the series. In 2025, ISRO was unable to carry out the intended orbit-raising operations for NVS-02 owing to a valve malfunction. NVS-02, the second satellite in the NVS series, had been launched on January 29, 2025.

The NVS series is intended to replenish and upgrade India's regional navigation capacity, with the satellites carrying both indigenously developed and procured components. The programme forms part of India's wider effort to build and maintain independent positioning, navigation and timing services, reducing reliance on systems operated by other countries.

ISRO has not indicated a date for the next satellite in the series or for the operational commissioning of NVS-03 into the NavIC constellation. Such details are typically announced after the satellite has completed in-orbit testing of its payload and signals.