Space Launch CalendarHome › 2021 › Atlas V 551
STPSAT-6/LDPE-1 on Atlas V 551, 2021-12-07 (Success)
ResultSuccess
Date2021-12-07 10:19 UTC
VehicleAtlas V 551Atlas V 551
Atlas V 551 flight no.10success rate so far 100%
No. in 2021125 / 144orbital attempts
Agency countryUnited StatesULAL
| Item | Value |
|---|---|
| Launch site | Cape Canaveral Air Station, Florida |
| Payload | STPSAT-6/LDPE-1 |
| GCAT launch tag | 2021-118 |
| Orbit | 155 × 210 km · 28.3° |
| Mass to orbit | 1.5 t |
Neighbouring Atlas V 551 launches
| Date | Payload | Vehicle | Site | Result |
|---|---|---|---|---|
| 2016-06-24 | MUOS 5 | Atlas V 551 | CC | Success |
| 2018-04-14 | CBAS/EAGLE | Atlas V 551 | CC | Success |
| 2018-10-17 | AEHF 4 | Atlas V 551 | CC | Success |
| 2019-08-08 | AEHF 5 | Atlas V 551 | CC | Success |
| 2020-03-26 | AEHF 6 | Atlas V 551 | CC | Success |
| 2021-12-07 | STPSAT-6/LDPE-1 | Atlas V 551 | CC | Success |
| 2023-09-10 | SILENT BARKER | Atlas V 551 | CC | Success |
| 2024-07-30 | USSF-51 | Atlas V 551 | CC | Success |
| 2025-04-28 | KA-01 | Atlas V 551 | CC | Success |
| 2025-06-23 | KA-02 | Atlas V 551 | CC | Success |
| 2025-09-25 | KA-03 | Atlas V 551 | CC | Success |
Atlas V 551 launches per year
Counts orbital launch attempts (successes and failures); suborbital flights excluded. Countries are those of the launching agency.