Flight
- Date and time (UTC)
- August 16, 2026, 01:50
- Launch designation
- 2026-186
- Mission
- SBST R-1
- Flight name
- USSF-366
- Vehicle flight ID
- xxx/B1088.18 F679
- Year
- Launches in 2026
Orbit and payload
- Initial perigee
- 300 km
- Initial apogee
- 300 km
- Inclination
- 70.0°
- Payload mass to orbit
- 16.0 t
- Payloads
- 23
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| USA 620 | 2026-186ANORAD 100333 | US Space Force Space Systems Command | — | — | — |
| USA 621 | 2026-186BNORAD 100334 | US Space Force Space Systems Command | — | — | — |
| USA 622 | 2026-186CNORAD 100335 | US Space Force Space Systems Command | — | — | — |
| USA 623 | 2026-186DNORAD 100336 | US Space Force Space Systems Command | — | — | — |
| USA 624 | 2026-186ENORAD 100337 | US Space Force Space Systems Command | — | — | — |
| USA 625 | 2026-186FNORAD 100338 | US Space Force Space Systems Command | — | — | — |
| USA 626 | 2026-186GNORAD 100339 | US Space Force Space Systems Command | — | — | — |
| USA 627 | 2026-186HNORAD 100340 | US Space Force Space Systems Command | — | — | — |
| USA 628 | 2026-186JNORAD 100341 | US Space Force Space Systems Command | — | — | — |
| USA 629 | 2026-186KNORAD 100342 | US Space Force Space Systems Command | — | — | — |
| USA 630 | 2026-186LNORAD 100343 | US Space Force Space Systems Command | — | — | — |
| USA 631 | 2026-186MNORAD 100344 | US Space Force Space Systems Command | — | — | — |
| USA 632 | 2026-186NNORAD 100345 | US Space Force Space Systems Command | — | — | — |
| USA 633 | 2026-186PNORAD 100346 | US Space Force Space Systems Command | — | — | — |
| USA 634 | 2026-186QNORAD 100347 | US Space Force Space Systems Command | — | — | — |
| USA 635 | 2026-186RNORAD 100348 | US Space Force Space Systems Command | — | — | — |
| USA 636 | 2026-186SNORAD 100349 | US Space Force Space Systems Command | — | — | — |
| USA 637 | 2026-186TNORAD 100350 | US Space Force Space Systems Command | — | — | — |
| USA 638 | 2026-186UNORAD 100351 | US Space Force Space Systems Command | — | — | — |
| USA 639 | 2026-186VNORAD 100352 | US Space Force Space Systems Command | — | — | — |
| USA 640 | 2026-186WNORAD 100353 | US Space Force Space Systems Command | — | — | — |
| USA 641 | 2026-186XNORAD 100354 | US Space Force Space Systems Command | — | — | — |
| USA 642 | 2026-186YNORAD 100355 | US Space Force Space Systems Command | — | — | — |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.