Daily current affairs · 19 August 2026
ISRO GISAT 1A Mission Geostationary Imaging Satellite Launch
Why in news
- ISRO announced the launch schedule for GISAT-1A to restore operational cadence following launch vehicle reviews.
Information
- GISAT-1A is a specialized continuous Earth observation satellite designed to operate from Geostationary Earth Orbit.
- Unlike Low Earth Orbit imaging satellites that pass over specific regions periodically, geostationary position allows continuous real-time monitoring of the Indian subcontinent.
- The satellite is built to facilitate rapid disaster management monitoring, border surveillance, and agricultural yield tracking.
- The mission marks ISRO's operational resumption after technical investigations into previous Polar Satellite Launch Vehicle missions.
Key terms
Geostationary Earth Orbit
A circular orbit 35,786 km directly above the Earth's equator where a satellite's orbital period matches Earth's rotation.
Earth Observation Satellite
A satellite specifically designed to collect imagery and data about Earth's physical, chemical, and biological systems.
Prelims facts
- Satellites in Geostationary Orbit maintain a fixed position relative to a specific spot on the Earth's equator.
- Continuous imaging from GEO provides real-time monitoring compared to periodic observations from LEO.
Mains discussion
- Discuss the strategic and socio-economic applications of placing Earth observation payloads in geostationary orbits versus low earth orbits.
Source: The Hindu