ISRO launched its EOS-05 satellite, also known as GISAT-1A, aboard a GSLV Mk II (F17) rocket from the Satish Dhawan Space Centre on 3 September 2026. The launch vehicle successfully inserted the satellite into a Sub-Geosynchronous Transfer Orbit (Sub-GTO) about 18 minutes after lift-off, with the satellite carrying a launch mass of 2,367 kg. EOS-05 was built to replace EOS-03, also known as GISAT-1, which had been lost in a launch failure in 2021.

GISAT-1A operates from a geostationary-type orbit to enable continuous, near-real-time observation of the Indian subcontinent, particularly for the quick monitoring of natural hazards and disasters. Its imaging payload includes array detectors across Visible and Near-Infrared (VNIR) and Short-Wave Infrared (SWIR) bands, offering 6 multispectral channels at 42-metre ground resolution, 158 hyperspectral VNIR channels at 318-metre resolution, and 256 hyperspectral SWIR channels at 191-metre resolution.

The satellite's data is intended to support applications including agriculture, disaster management, and environmental monitoring, continuing India's effort to maintain persistent, real-time Earth observation capability from geostationary orbit, a capability distinct from the polar sun-synchronous orbits used by most other Indian Earth-observation satellites.