Communications
Atlas V 551 — Amazon Leo
This Atlas V 551 mission launches a batch of Amazon Leo broadband satellites into low Earth orbit. Amazon Leo is a planned constellation of more than 3,000 satellites, and ULA's agreement with Amazon covers eight Atlas V and 38 Vulcan launches. After the April 2026 launch (29 satellites), ULA said two Atlas V Amazon Leo missions remained.
- Operator
- United Launch Alliance (launch); Amazon (Amazon Leo satellites)
- Launch vehicle
- Atlas V 551 (five side-mounted solid rocket boosters, 5.4 m medium-length fairing)
- Launch site
- Space Launch Complex-41, Cape Canaveral Space Force Station, Florida
- Target orbit
- Low Earth orbit
- Schedule
- ULA has not published a satellite count or a firm date for this specific flight on the pages checked, and does not call it the last Atlas V 551.
Primary source: ulalaunch.com. Facts checked on 2026-10-10. Dates are the operator's targets and can change; this page does not report launch outcomes.