Mission info
| Scheduled for (UTC) | 2025-05-18, 00:29 |
|---|---|
| Scheduled for (local) | 2025-05-19, 05:59 (IST) |
| Launch site | First Launch Pad, Satish Dhawan Space Centre, India |
| Launch Vehicle | PSLV-XL |
| Payloads | EOS-09 (RISAT-1B) |
| Payload mass | 1,696.0 kg |
| Mission success criteria | Sun-Synchronous Orbit |
Webcasts
| Stream | Link |
|---|---|
| ISRO | https://www.youtube.com/watch?v=y63x4kjvAc0 |
| Space Affairs | none |
| The Launch Pad | https://www.youtube.com/watch?v=s3_oy1jK96Y |
| The Space Devs |
Stats
Sourced from NextSpaceflight:
☑️ 1st PSLV mission this year, 63rd overall
☑️ 2nd ISRO mission this year, 98th overall
Mission details
EOS-09 (RISAT-1B)
EOS-09, also named RISAT (Radar Imaging Satellite)-1B, is a series of Indian radar imaging reconnaissance satellites built by ISRO. They provide all-weather surveillance using synthetic aperture radars (SAR).
First and second stages performed normally, but the third stage did not:
https://x.com/isro/status/1923907158133047606
Today 101st launch was attempted, PSLV-C61 performance was normal till 2nd stage. Due to an observation in 3rd stage, the mission could not be accomplished.
https://bsky.app/profile/planet4589.bsky.social/post/3lpfxttzqic25
LAUNCH at 0029 UTC May 18 and FAILURE of ISRO’s PSLV-61 carrying the EOS-09 radar satellite. Third stage failed, fourth stage and satellite did not reach orbit.
https://bsky.app/profile/nasaspaceflight.com/post/3lpfvtaew322e
On ISRO’s live broadcast, we heard “We are seeing an observation.” It appears there was a third-stage mishap which will cause EOS-09 to not make orbit. Image here shows a telemetry deviation at approx T+365 seconds.
https://x.com/dpoddolphinpro/status/1923905851611332868
LAUNCH FAILURE: EOS-09 will not be making it to orbit due to a 3rd stage mishap. We can see a huge telemetry deviation approximately 365 seconds into flight. @ISRO: “We are seeing an observation”.
This marks the first failure of a PSLV-family rocket since 2017, and the third total-failure since debut in 1993.
