ISRO Prepares to Launch GISAT-1A (EOS-05) Satellite
Science & Technology · Thursday, 20 August 2026
ISRO is set to launch the GISAT-1A Earth observation satellite aboard the GSLV-F17 rocket in September 2026, enabling near real-time, continuous monitoring of the Indian subcontinent.
Quick highlights
- GISAT-1A will operate from a Geostationary Orbit (~36,000 km altitude).
- Will launch aboard the GSLV Mk-II (Flight F17) featuring an indigenous Cryogenic Upper Stage.
- Provides imaging of the Indian mainland every 30 minutes at a 42-meter resolution.
- Equipped with advanced Multispectral and Hyperspectral sensors.
Context
Unlike conventional remote sensing satellites in Low Earth Orbit (LEO), GISAT-1A remains fixed over the Indian subcontinent, unlocking unprecedented continuous surveillance capabilities.
Key Facts
Built on the I-2K satellite bus with a 10-year mission life, it features rapid target steering capable of capturing high-priority areas every 5 minutes. Its sensors span VNIR and SWIR bands to detect surface mineralogy and crop stress.
Significance
This mission revolutionizes disaster management (tracking cyclones, floods, cloudbursts) and bolsters national security surveillance. It also validates the GSLV Mk-II platform for upcoming critical missions like Gaganyaan.
Exam Angle
Important for GS Paper III (Space Technology). Differentiate between Geostationary Orbits (GEO) and Low Earth Orbits (LEO) regarding Earth Observation applications.
Remember this
- GISAT-1A is designated as EOS-05.
- It operates from a Geostationary Orbit, unlike most EOS which use LEO.
- Launched by GSLV Mk-II featuring the CE-7.5 cryogenic engine.