Atlas V 551 | Amazon Leo (LA-04)
Atlas V 551 launched the Amazon Leo (LA-04) mission for United Launch Alliance from Cape Canaveral SFS, FL, USA on Dec 16, 2025 (UTC).
Launch pad
Space Launch Complex 41 · Cape Canaveral SFS, FL, USA
Atlas V 551 | Amazon Leo (LA-04)
Launched Dec 16, 2025 5:28:00 PMSuccess
Flight direction
90° E
orbit unknown: due east assumed
Flight path
First-stage drop zone (rough estimate)
Drawn 400–700 km downrange along the flight direction. Official hazard areas are published as NOTAMs and navigational warnings.
About the mission
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. 27 satellites are carried on this launch.
Mission description from Launch Library 2.
- Launch time (your time zone)
- Tue, Dec 16 · 5:28:00 PM
- Status
- Success
- Launch provider
- United Launch Alliance
- Rocket
- Atlas V 551
- Mission type
- Communications
- Target orbit
- LEO
- Launch pad
- Space Launch Complex 41 · Cape Canaveral SFS, FL, USA