Atlas V 551 | Amazon Leo (LA-04)
Launch Successful
45 days ago • 12/16/2025, 8:28:00 AM
Rocket
Launch Probability
90%
Mission Description
Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.
Weather Conditions
Cumulus Cloud Rule
Launch Videos
Rocket Launch: Atlas V Leo 4
Rocket Launch: Atlas V Leo 4
youtube.com
ULA Atlas V 551 launches Amazon Leo Atlas 4 (LA-04)
youtube.com
Watch live: ULA Atlas 5 rocket launches 27 Amazon Leo satellites from Cape Canaveral
Mission Updates
Cosmic_Penguin
12/14/2025, 6:43:00 PM
Delayed to December 16 due to launch site ground winds.
More Info →
Launch Details
Launch Window
12/16/2025, 8:28:00 AM
to 12/16/2025, 8:57:00 AM
Rocket Details
Atlas V 551
Family: Atlas
Variant: 551
Launch Facility
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
