Atlas V 551 | MUOS-2
United Launch Alliance flew Atlas V 551 | MUOS-2 on a Atlas V 551 out of Cape Canaveral SFS, FL, USA, placing its payload in GTO.
- Launch time
- Status
- SUCCESS
- Operator
- United Launch Alliance
- Mission type
- Government/Top Secret
- Rocket
- Atlas V 551
- Launch site
- Cape Canaveral SFS, FL, USA
- Launch pad
- Space Launch Complex 41
- Payload
- —
- Target orbit
- GTO

Mission timeline
- 2013-07-19T13:00:00.000ZLiftoff confirmed — Atlas V 551 is airborne.
- Max Q — Atlas V 551 endures peak structural stress during ascent.
- First-stage main engine cutoff (MECO) confirmed.
- The spent first stage separates from the upper stage.
- Upper stage ignites, continuing the journey toward orbit.
- The mission reaches GTO, successfully entering orbit.
- The mission concludes successfully.