Launch index
Launch Successful

Atlas V 551 | Amazon Leo (KA-03)

September 25, 2025 at 12:09 PM UTC

Cape Canaveral SFS, FL, USA

Atlas V 551 | Amazon Leo (KA-03) launch image
Mission imagery · Atlas V 551

Launch details

LAUNCH IN

T−00d00h00m00s

September 25, 2025 at 12:09 PM UTC

Status: Launch Successful · Live feed refreshes every 30 seconds

Space Launch Complex 41

Cape Canaveral SFS, FL, USA · 28.5834, -80.5830

Open map
Launch site
Space Launch Complex 41

Cape Canaveral SFS, FL, USA

Launch probability
95%
Window opens
September 25, 2025 at 12:09 PM UTC
Window closes
September 25, 2025 at 12:38 PM UTC
Feed updated
November 21, 2025 at 4:09 PM UTC

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 concern: Cumulus Cloud Rule
Vehicle

Atlas V 551

Atlas · 551

Height

59.7 m

Diameter

3.8 m

LEO capacity

18,850 kg

Successful launches

23

Launch complex

Space Launch Complex 41

Cape Canaveral SFS, FL, USA

Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.

Open map

Official links

Mission updates

Launch success.

September 25, 2025 at 1:59 PM UTC · Cosmic_Penguin

Liftoff.

September 25, 2025 at 12:09 PM UTC · Cosmic_Penguin

Official Webcast by United Launch Alliance has started

September 25, 2025 at 11:49 AM UTC · LL2

Tweaked T-0.

September 25, 2025 at 9:29 AM UTC · Cosmic_Penguin

Updated launch weather, 95% GO.

September 24, 2025 at 6:04 PM UTC · Cosmic_Penguin