WHY IN NEWS
- ISRO successfully launched GSLV-F17 carrying EOS-05 on 4 September 2026.
- The mission is significant because EOS-05 is India's first imaging satellite designed for geosynchronous-orbit Earth observation.
- It strengthens high-frequency monitoring for disaster management, agriculture, weather-linked observation and other civil applications.
TOP DATA & FACTS
- Launch date: 4 September 2026.
- Launch time: 02:55 AM IST.
- Launch vehicle: GSLV-F17.
- Launch site: Satish Dhawan Space Centre, SHAR, Sriharikota.
- Launch pad: Second Launch Pad.
- Satellite: EOS-05.
- Mission type: Earth Observation.
- ISRO describes EOS-05 as India's first ever imaging satellite from geosynchronous orbit.
- The launch vehicle placed the spacecraft into Sub-GTO.
- Geosynchronous orbit has an orbital period equal to Earth's rotation period.
- A geostationary orbit is a special circular, equatorial geosynchronous orbit that appears fixed over one longitude.
- High temporal revisit is useful for rapidly changing events.
- Earth-observation satellites support agriculture, disaster assessment, land use and resource monitoring.
HISTORICAL PERSPECTIVE
- India's remote-sensing programme developed through the IRS series and later specialised Earth-observation missions.
- Most high-resolution imaging satellites operate in low Earth or sun-synchronous orbits.
- Geosynchronous observation trades some spatial detail for persistent or frequent viewing of a broad region.
- Earlier GISAT/EOS programme attempts faced delays and setbacks.
- EOS-05 therefore represents an important step in India's high-temporal-resolution imaging capability.
ECONOMIC PERSPECTIVE
- Satellite data can reduce information costs in agriculture, insurance, infrastructure and disaster response.
- Domestic launch capability reduces dependence on foreign launch services for strategic missions.
- Earth-observation services can support commercial geospatial applications.
- Better disaster information can reduce economic losses through earlier response.
- Space infrastructure requires high upfront investment but serves multiple sectors over its mission life.
GEOGRAPHICAL PERSPECTIVE
- Sriharikota lies on the east coast of Andhra Pradesh and provides a suitable launch corridor over the Bay of Bengal.
- Geosynchronous spacecraft operate at much greater altitude than low-Earth-orbit imaging satellites.