Launch success.
Atlas V 551 · Communications

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. 29 satellites are carried on this launch.
Start of the engine ignition sequence
First upwards movement of the rocket
Vehicle is supersonic
Maximum dynamic pressure
Separation of the side boosters
Separation of the payload fairing
Booster Engine Cutoff
Separation of the second stage from the first
First start of the second engine
First cut-off of the second engine
Start of the payload deployment sequence
End of the payload deployment sequence.
Second start of the second engine
Second cut-off of the second engine
Activity appears when ORBITAL observes a change between source records. No historical events are invented.
Launch success.
Liftoff.
New T-0.
Official Webcast by United Launch Alliance has started
Updated launch weather, 85% GO.
New T-0.
Moved up to July 2.
NET July 3.
NET July.
NET Q2.
No changes recorded
Changes are recorded when ORBITAL retrieves data. The detection time may differ from the time the source changed its information.
Atlas V is an expendable launch system in the Atlas rocket family. It was formerly operated by Lockheed Martin and is now operated by United Launch Alliance (ULA), a joint venture with Boeing. Each Atlas V rocket uses a Russian-built RD-180 engine burning kerosene and liquid oxygen to power its first stage and an American-built RL10 engine burning liquid hydrogen and liquid oxygen to power its Centaur upper stage. The RD-180 engines are provided by RD Amross, while Aerojet Rocketdyne provides both the RL10 engines and the strap-on boosters used in some configurations. The standard payload fairing sizes are 4 or 5 meters in diameter and of various lengths. Fairings sizes as large as 7.2 m in diameter and up to 32.3 m in length have been considered. The rocket is assembled in Decatur, Alabama and Harlingen, Texas.
Amazon Leo (LA-08)
Payload details are described in the mission overview. No independently structured payload manifest or payload mass has been provided by the source.
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
Official mission broadcast. Stream availability is controlled by the provider.
Source links and confidence are preserved with each mission. Official updates take priority when verified.
Mission photographs are provided by the original sources. Their rights remain with their creators; consult the source before reusing an image.