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ULA Atlas V 551 launches Amazon Leo Atlas 4 (LA-04)

Publisher

NASASpaceflight

December 16, 2025 at 7:27 AM

ULA Atlas V 551 launches Amazon Leo Atlas 4 (LA-04) video artwork

Video type

Unofficial Webcast

Source

youtube.com

Language

English

Priority

12

About this video

ULA Atlas V launch of the Amazon Leo Atlas 4 (LA-04) mission from SLC-41. Launch Window: December 16th from 3:28AM to 3:57AM EST (08:28-08:57 UTC) Current T0: December 16th at 3:49AM EST (08:28 UTC) Mission: Atlas V 551 launch of a batch of 27 Amazon Leo satellites Launch location: Space Launch Complex 41 (SLC-41), Cape Canaveral Space Force Station, Earth. Target orbit: Low-Earth Orbit (LEO) Booster: AV-XXX Configuration: 551 - 5 meter wide, medium length version payload fairing - 5 GEM 63 solid rocket motors - 1 RL10C-1-1 engine on Centaur - Nicknamed "Bruiser" Rocket trajectory: Northeast flying parallel to the US east coast. Payload mass: ~15,400kg (~34,000lbs) Stats: - ULA's 169th launch overall and its 6th and last of the year. - Earth's X orbital launch of the ye...

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Atlas V 551 | Amazon Leo (LA-04)

December 16, 2025 at 8:28 AM

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