Atlas V 551 | Amazon Leo (KA-02)

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.

Communications · Low Earth Orbit (LEO)

No booster details available.

• Rocket Launch: Atlas V Kuiper 2 — United Launch Alliance
• Watch live: ULA Atlas 5 launches from Cape Canaveral with 27 Kuiper satellites for Amazon — Spaceflight Now
• ULA's Atlas V Launches Amazon's Project Kuiper (KA-02) — NASASpaceflight

1. T−2.7SIgnition
2. T+1SLiftoff
3. T+34.6SSupersonic
4. T+45.6SMax-Q
5. T+1M46.2SBoosters Separation
6. T+3M4.8SFairing Separation
7. T+4M23.1SBECO
8. T+4M29.1SStage 2 Separation
9. T+4M39SSES-1
10. T+18M14.9SSECO-1

• Launch success.

  Cosmic_Penguin · 6/23/2025 · source

• Liftoff.

  Cosmic_Penguin · 6/23/2025 · source

• Official Webcast by United Launch Alliance has started

  LL2 · 6/23/2025 · source

• Updated launch weather, 85% GO.

  Cosmic_Penguin · 6/23/2025 · source

• Tweaked T-0.

  Cosmic_Penguin · 6/23/2025 · source

• Updated launch weather, 80% GO.

  Cosmic_Penguin · 6/22/2025 · source

• GO for launch.

  Cosmic_Penguin · 6/21/2025 · source

• New launch window.

  Cosmic_Penguin · 6/20/2025 · source

• Delayed to NET June 23 per new NOTAMs.

  Cosmic_Penguin · 6/17/2025 · source

• NET June 20 per new marine navigation warnings.

  Cosmic_Penguin · 6/17/2025 · source