An Atlas V rocket operated by United Launch Alliance is scheduled to lift off from Cape Canaveral Space Force Station on April 27, carrying 29 of Amazon’s internet satellites into low Earth orbit during a 29-minute window that opens at 8:52 p.m. EDT.
Coverage of the mission, which ULA calls Amazon Leo 6, will begin about 20 minutes before the scheduled launch. Amazon Leo 6 is set to place 29 satellites into orbit and will likely tie the Atlas V’s recent record payload mark of about 18 tons, a bar set by Amazon Leo 5 on April 4.
The sequence of recent flights shows the program picking up pace: Amazon Leo 5 launched April 4 and boosted the total number of satellites launched to 29. Before that, the first four Atlas V Amazon Leo missions sent 27 satellites skyward. In all, nine Amazon Leo launches have taken place to date — five on Atlas V vehicles, three on SpaceX’s Falcon 9 and one on Arianespace’s Ariane 6.
Amazon has said the Leo broadband constellation is expected to eventually consist of more than 3,200 satellites if all goes to plan, and completing the network will require more than 80 launches by a variety of rockets. The program’s reliance on multiple launch providers — and on repeated heavy lifts like the Atlas V flights — is what has allowed the company to reach this point after nine launches.
The timing of the Atlas V launch places it in a tight international schedule: the 8:52 p.m. EDT window corresponds to 00:52 GMT on April 28, and Arianespace’s Ariane 6 is scheduled to launch an Amazon Leo mission from French Guiana early on April 28. That proximity underscores the program’s rapid cadence and the logistical coordination required when a constellation depends on a long sequence of missions from different rockets.
The Atlas V has now flown five Amazon Leo missions, demonstrating repeated use of the vehicle for Amazon’s heavy payloads. Amazon Leo 5 set a new record for the heaviest payload ever flown by an Atlas V at about 18 tons, and Amazon Leo 6 is expected to match that figure. The program’s progress so far — nine launches, 29 satellites in orbit before Amazon Leo 6 — shows how incremental each launch is toward a much larger goal.
Even with the expected success of Amazon Leo 6, the constellation remains far from complete. More than 3,200 satellites and more than 80 total launches remain the benchmark for the finished network, meaning that dozens of missions still need to fly across a range of launch vehicles. The coming months will test whether that tempo can be sustained and how reliably different rockets can deliver heavy batches of satellites into the intended orbits.
If Atlas V lifts on schedule, Amazon will move to 58 launched satellites in total and add another heavy flight to the rocket’s record. But the larger conclusion is unavoidable: the program’s momentum depends not on any single mission but on dozens more to come, flown by multiple providers across years of launches.
