Amazon Leo (KF-01)

Mission

Amazon Leo (KF-01) on Falcon 9 Block 5. Wed 16 Jul 2025, 06:30 UTC. Reported outcome: Success. Launch site: Space Launch Complex 40. Source: Launch Library 2.

First of a three launches contract for Amazon's Kuiper low Earth orbit satellite internet constellation, with 24 satellites on board. 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.

Mission type

Communications

Orbit

Low Earth Orbit

Programmes: Amazon Leo

Launch timeline

Times are relative to liftoff.

1. T-38 minWed 16 Jul, 07:52 CEST

   GO for Prop Load

   Launch director verifies go for propellant load

2. T-35 minWed 16 Jul, 07:55 CEST

   Stage 1 LOX Load

   Start of liquid oxygen loading in the first stage

3. T-35 minWed 16 Jul, 07:55 CEST

   Prop Load

   Start of propelland loading

4. T-16 minWed 16 Jul, 08:14 CEST

   Stage 2 LOX Load

   Start of liquid oxygen loading in the second stage

5. T-7 minWed 16 Jul, 08:23 CEST

   Engine Chill

   Start of engine chilling

6. T-1 minWed 16 Jul, 08:29 CEST

   Tank Press

   Fuel tanks are pressurized to flight levels

7. T-1 minWed 16 Jul, 08:29 CEST

   Startup

   The onboard computer takes control over the countdown and runs last checks

8. T-45 sWed 16 Jul, 08:29 CEST

   GO for Launch

   Launch director verifies go for launch

9. T-3 sWed 16 Jul, 08:29 CEST

   Ignition

   Start of the engine ignition sequence

10. T-0Wed 16 Jul, 08:30 CEST

    Liftoff

    First upwards movement of the rocket

11. T+1 min 12 sWed 16 Jul, 08:31 CEST

    Max-Q

    Maximum dynamic pressure

12. T+2 min 27 sWed 16 Jul, 08:32 CEST

    MECO

    Cut-off of the main engine

13. T+2 min 31 sWed 16 Jul, 08:32 CEST

    Stage 2 Separation

    Separation of the second stage from the first

14. T+2 min 39 sWed 16 Jul, 08:32 CEST

    SES-1

    First start of the second engine

15. T+3 min 26 sWed 16 Jul, 08:33 CEST

    Fairing Separation

    Separation of the payload fairing

16. T+6 min 15 sWed 16 Jul, 08:36 CEST

    Entry Burn Startup

    Start of the atmospheric entry burn

17. T+6 min 40 sWed 16 Jul, 08:36 CEST

    Entry Burn Shutdown

    End of the atmospheric entry burn

18. T+8 min 6 sWed 16 Jul, 08:38 CEST

    Stage 1 Landing Burn

    Start of the first stage landing burn

19. T+8 min 30 sWed 16 Jul, 08:38 CEST

    SECO-1

    First cut-off of the second engine

20. T+8 min 30 sWed 16 Jul, 08:38 CEST

    Stage 1 Landing

    Landing of the first stage

21. T+52 min 43 sWed 16 Jul, 09:22 CEST

    SES-2

    Second start of the second engine

22. T+52 min 46 sWed 16 Jul, 09:22 CEST

    SECO-2

    Second cut-off of the second engine

23. T+56 min 18 sWed 16 Jul, 09:26 CEST

    Payload Deployment Sequence Start

    Start of the payload deployment sequence

24. T+1 h 3 min 58 sWed 16 Jul, 09:33 CEST

    Payload Deployment Sequence End

    End of the payload deployment sequence.

Slip history

Changes recorded by Space Right Now

No changes since we started tracking on Sat 10 Oct 2026, 11:16 UTC.

Launch pad

Space Launch Complex 40

Cape Canaveral SFS, FL, USA (US)

Coordinates: 28.56194122, -80.57735736