ISRO's EOS-05 completes final orbit-raising manoeuvre, reaches geosynchronous orbit
3 entries, oldest to newest.
- 2026-09-01
ISRO to end seven month launch pause with GISAT-1A on 4 September
The Indian Space Research Organisation announced on 31 August 2026 that it will launch the earth observation satellite EOS-05, also called GISAT-1A, aboard the GSLV-F17 rocket from Sriharikota on 4 September 2026. The launch will end a seven month operational pause for ISRO since the PSLV-C62 mission, carrying the EOS-N1 satellite, failed shortly after liftoff on 12 January 2026. GISAT-1A is a replacement for the original GISAT-1, also known as EOS-03, which was lost in August 2021 after the cryogenic upper stage of its launch vehicle failed to ignite.
- 2026-09-04
ISRO's GSLV-F17 successfully launches India's first geosynchronous imaging satellite EOS-05
The Geosynchronous Satellite Launch Vehicle GSLV-F17 successfully placed the EOS-05 Earth observation satellite into its intended Sub-Geosynchronous Transfer Orbit, 18 minutes after lifting off from the Satish Dhawan Space Centre in Sriharikota at 2.55 a.m. on 4 September 2026. Weighing 2,367 kilograms, EOS-05 is India's first ever imaging satellite designed to operate from Geosynchronous orbit, about 36,000 kilometres above Earth, and will provide real time imagery for agriculture, environment and disaster management once operational. ISRO Chairman V Narayanan said this was the 107th launch from Sriharikota and the 19th flight of the GSLV, and the space agency's first successful launch since the failure of the PSLV-C62 mission in January 2026. The EOS-05 mission replaces the payload lost when the GSLV-F10/EOS-03 mission failed in August 2021 due to a cryogenic upper stage anomaly.
- 2026-09-09
ISRO's EOS-05 completes final orbit-raising manoeuvre, reaches geosynchronous orbit
ISRO completed the third and final orbit-raising manoeuvre of its EOS-05 satellite at 8.57 pm on 7 September 2026, firing the Liquid Apogee Motor for 1,247 seconds and placing the satellite into a near circular orbit of about 34,903 km by 35,884 km. EOS-05, launched aboard the GSLV-F17 rocket on 4 September, is India's first imaging or Earth observation satellite designed to operate from geosynchronous orbit, distinct from India's long-standing GSAT communication satellites in that same class of orbit, and will undergo health and systems checks over the coming days before its imaging payload is activated. Two earlier orbit-raising manoeuvres on 5 and 6 September had already reshaped the satellite's orbit from its initial sub-geosynchronous transfer orbit.