this post was submitted on 30 Jul 2025
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Mission info

| Scheduled for (UTC) | 2025-07-30, 12:10 | |


|


| | Scheduled for (local) | 2025-05-30, 17:40 (IST) | | Launch site | Second Launch Pad, Satish Dhawan Space Centre, India | | Launch Vehicle | GSLV Mark II | | Payloads | NISAR | | Payload mass | 2,393.0 kg | | Mission success criteria | Sun-Synchronous Orbit |

Webcasts

| Stream | Link | |


|


| | ISRO | https://www.youtube.com/watch?v=OgC1MxtCwq4 | Space Affairs | https://www.youtube.com/watch?v=yFLaJHWwNN8 | The Launch Pad | none | International Rocket Launches | https://www.youtube.com/watch?v=UJqzghdm8m4

Stats

Sourced from NextSpaceflight:

โ˜‘๏ธ 2nd GSLV mission of 2025, 18th overall

โ˜‘๏ธ 3rd ISRO mission this year, 99th overall

Mission details

The NASA-ISRO Synthetic Aperture Radar, or NISAR satellite, will use advanced radar imaging to map the elevation of Earth's land and ice masses 4 to 6 times a month at resolutions of 5 to 10 meters. It is designed to observe and measure some of the planet's most complex natural processes, including ecosystem disturbances, ice-sheet collapse, and natural hazards such as earthquakes, tsunamis, volcanoes and landslides.

Under the terms of the agreement, NASA will provide the mission's L band synthetic aperture radar (SAR), a high-rate telecommunication subsystem for scientific data, GPS receivers, a solid-state recorder, and a payload data subsystem. ISRO will provide the satellite bus, an S band synthetic aperture radar, the launch vehicle, and associated launch services.

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https://bsky.app/profile/planet4589.bsky.social/post/3lv6otzz3uc2d

LAUNCH at 1210 UTC Jul 30 of a GSLV Mk II from Satish Dhawan spaceport with the NISAR radar satellite

https://bsky.app/profile/planet4589.bsky.social/post/3lv75zocljs27

NISAR cataloged in a 734 x 749 km x 98.4 deg sun-sync orbit with 1800 LTDN orbit plane; GSLV upper stage in a similar orbit.

Third stage cutoff, NISAR spacecraft separation, and nominal orbit insertion. Launch success!

GS2 cutoff, GS2 separation, and third stage ignition.

S139 burnout, L40 shutoff, GS2 ignition, GS1 separated, fairing separation.