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Atlas V 551 | Amazon Leo (KA-01)

Atlas V 551 launched the Amazon Leo (KA-01) mission for United Launch Alliance from Cape Canaveral SFS, FL, USA on Apr 28, 2025 (UTC).

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Launch pad

Space Launch Complex 41 · Cape Canaveral SFS, FL, USA

Atlas V 551 | Amazon Leo (KA-01)

Launched Apr 29, 2025 8:01:00 AMSuccess

48 objects in orbit now

Flight direction

45° NE

measured from the launched orbit · inclination 51.9°

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.

🚀 Where to watch a launch: Cape Canaveral and Kennedy Space Center, Florida →

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.

Objects from this launch still in orbit

Launch time (your time zone)
Tue, Apr 29 · 8:01:00 AM
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