| Scheduled for (UTC) | 2026-08-16, 01:50:45 |
|---|---|
| Scheduled for (local) | 2026-08-15, 18:50:45 (PDT) |
| Launch site | SLC-4E, Vandenberg SFB, California, USA |
| Booster | B1088-18 |
| Landing | OCISLY |
| Payload | USSF-366 |
| Mass | unknown |
| Customer | USSF |
| Target Orbit | LEO |
Webcasts
| Stream | Link |
|---|---|
| Space Affairs | https://www.youtube.com/watch?v=kHEJHhUndgk |
| Spaceflight Now | https://www.youtube.com/watch?v=hBRXDnr-b_0 |
| NASASpaceflight | https://www.youtube.com/watch?v=2lJyYhaRcZM |
| The Launch Pad | https://www.youtube.com/watch?v=YNdVaCrmW4s |
| International Rocket Launches | https://www.youtube.com/watch?v=8Dc9Ns92kkE |
| SpaceX | https://x.com/SpaceX/status/2088802485326537112 |
| The Space Devs | https://www.youtube.com/watch?v=GCdmtmYyInM |
Stats
Sourced from NextSpaceflight and r/SpaceX:
Mission info
USSF-366
USSF-366 is a classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites for a US government entity based on SpaceX’s Starshield satellite bus, based on locations of rocket stage drop zones being exact fits with previous Starlink Group 15 launches.
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Nominal liftoff and booster landing.
No coverage of the upper stage, as is typical for USSF missions.
https://bsky.app/profile/planet4589.bsky.social/post/3mu6dytb2ms27
The USSF-366 payloads launched on Aug 16 have now been cataloged on Space-Track as USA 620 to USA 642. No GP elements available but orbits indicated as about 350 km, 70.0 deg.

