ULA Atlas V 551 launches Amazon Leo Atlas 6 (LA-06) @NASASpaceflight
ULA Atlas V 551 launches Amazon Leo Atlas 6 (LA-06)  @NASASpaceflight
Uploaded April 2026 | Updated September 2026, 2 weeks ago
ULA Atlas V launch of the Amazon Leo Atlas 6 (LA-06) mission from SLC-41.

Launch Window: April 27th from 8:52PM to 9:21PM EDT (00:52-01:21 UTC on the 28th)
Current T0: April 27th at 8:52PM EDT (00:52 UTC on the 28th)

Mission: Atlas V 551 launch of a batch of 29 Amazon Leo satellites into orbit.
Launch location: Space Launch Complex 41 (SLC-41), Cape Canaveral Space Force Station, Earth.
Target orbit: Low-Earth Orbit (LEO); ~450km circular orbit at 51.9º inclination
Booster: Unknown
Configuration: 551
- 5 meter wide, medium length version payload fairing
- 5 GEM 63 solid rocket motors
- 1 RL10C-1-1 engine on Centaur
- Nicknamed "Bruiser"
Rocket trajectory: Northeast flying parallel to the US east coast.
Payload mass: ~16800kg (~37000lbs)
Stats:
- ULA's 172nd launch overall and its 3rd of the year.
- Earth's X orbital launch of the year.
- Atlas V's 108th launch, 21st launch in 551 configuration.
- ULA's 86th launch from SLC-41, 91st launch of Atlas V from SLC-41.
- After this mission, only 8 Atlas V rockets will remain.
- ULA's 7th mission in support of Amazon Leo
- Amazon's 10th operational launch of Leo satellites.
- This mission will bring up to 270 the number of operational Leo satellites launched into orbit.

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ULA Atlas V 551 launches Amazon Leo Atlas 6 (LA-06)

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