Atlas V 551 | Amazon Leo (KA-03)
Launch Successful
L - -- : -- : -- : --
Launch Window
Sept. 25, 2025, 12:09 p.m. - Sept. 25, 2025, 12:38 p.m.
Sept. 25, 2025, 12:09 p.m. - Sept. 25, 2025, 12:38 p.m.
ULA's Atlas V rocket is delivering another batch of Project Kuiper satellites into space for Amazon. Project Kuiper is Amazon's low Earth orbit satellite broadband network. Its mission is to provide fast, reliable internet to customers around the world, including those in unserved and underserved co...
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.
Launch trajectory and telemetry simulations provided by Flight Club - a rocket launch simulator and orbital trajectory visualiser for all things space!
Launch success.
Liftoff.
Official Webcast by United Launch Alliance has started
Tweaked T-0.
Updated launch weather, 95% GO.
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.
United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
INFO WIKI
This is the third time that United Launch Alliance will launch these broadband satellites, but it’s the fifth batch heading to orbit overall for the constellation. Liftoff is scheduled for 8:09 a.m. EDT (1230 UTC).
A busy slate of launches is planned for the last full week of September, including… The post Launch Roundup: Kuiper, Starlink, IMAP headline launch manifest appeared first on NASASpaceFlight.com.
A batch of 25 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A pair of Chinese satellites reported to be for "Earth observation technological testing and validation" purposes. Actual usage not known.
A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…
Firefly Alpha's Flight 7 is a test flight and return-To-Flight for the launch vehicle after its April 2025 launch failure. It will test and validate …
EchoStar 25 is a direct broadcast satellite, built on the proven Maxar 1300 series platform, which will deliver content across North America. It will…
A batch of 25 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Note: Payload and customer identities were not publicly announced. 4th of the BlackSky Gen-3 high resolution Earth-imaging satellites.
Third flight of the KAIROS launch vehicle. 5 satellites will be on board: * TATARA-1R * SC-Sat1a * HErO * AETS-1 * Nutsat-3 (TASA/Taiwan)
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
View in Flightclub