ISRO Launches Advanced Imaging Satellite EOS-05 via GSLV-F17
Subject: GS III — Science and Technology
Context
The Indian Space Research Organisation (ISRO) successfully launched EOS-05, an advanced Earth-observation satellite, aboard the GSLV-F17 from the Second Launch Pad at the Satish Dhawan Space Centre, Sriharikota. Weighing 2,367 kg, the satellite was precisely injected into an intermediate Sub-Geosynchronous Transfer Orbit (Sub-GTO) about 18 minutes after liftoff, marking a major milestone and a confidence boost for India’s space program.
Key Technical Features of the Mission
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First Geosynchronous Imaging Satellite: EOS-05 is India’s first dedicated Earth-observation imaging satellite designed to operate from a geosynchronous orbit (~36,000 km above Earth). Unlike standard Low Earth Orbit (LEO) satellites that provide periodic revisits, a geosynchronous platform matches Earth’s rotation, enabling continuous, high-frequency observation and near-real-time monitoring of large regions.
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Sub-GTO Insertion: The GSLV-F17 placed the satellite into a Sub-GTO to optimize launch vehicle energy. The satellite will use its own onboard propulsion system to execute subsequent orbit-raising maneuvers into its final operational slot.
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Enhanced GSLV Capability: Marking the 19th flight of the GSLV and the 107th launch from Sriharikota, EOS-05 is the heaviest satellite ever lifted by the GSLV. This payload increase (from historical configurations like the 1,536 kg on GSLV-D1) reflects systemic optimizations in structural mass and propulsion systems.
Applications and Strategic Significance
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The “Eye in the Sky”: Equipped with advanced multi-spectral and hyper-spectral imaging payloads, the satellite provides crucial data streams across visible and infrared bands.
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Disaster Management & Weather Tracking: Offers rapid, continuous monitoring for episodic events such as cyclones, floods, cloudbursts, thunderstorms, and forest fires.
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Resource Monitoring: Supports long-term applications in agriculture crop assessment, forestry, and water-resource management.
Strategic Rebound for ISRO
The successful GSLV-F17 mission holds immense programmatic importance, coming after a period of operational caution following earlier launch setbacks (including anomalies in recent PSLV flights) and the historical GSLV-F10/EOS-03 failure in August 2021. By successfully clearing this path, ISRO has reinforced its heavy-lift reliability and restored its launch cadence.
Conclusion
The successful deployment of EOS-05 enhances India’s technological self-reliance in high-altitude imaging and disaster intelligence. By combining indigenous heavy-lift advancements with persistent geosynchronous observation, India joins an elite group of nations capable of continuous real-time space-based surveillance over the subcontinent.
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