Vulcan VC6L | Amazon Leo (LV-01)
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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.
45 satellites will be carried on each Vulcan launch.
Mission Profile
Launch Date
Mar 31
2026
Time
00:00
UTC
Rocket
Vulcan VC6L
VC6L
Site
ll-location-12
ll-pad-29
Orbit
LEO
Low Earth Orbit
history
Launch Timeline
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Countdown Begins
Final vehicle activation and systems checks.
Tanking
Liquid natural gas (LNG), liquid oxygen (LOX), and liquid hydrogen (Centaur stage) begin loading.
Terminal Count
Final automated sequence begins.
Internal Power
The rocket switches to internal battery power.
Main Engine Ignition
The two BE-4 engines ignite and throttle up.
Liftoff
SRBs ignite and the hold-down bolts release.
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Max Q
Maximum aerodynamic pressure.
SRB Burnout and Jettison (6 SRBs)
Six solid rocket boosters burn out and are jettisoned in three pairs.
BECO
Booster Engine Cutoff: BE-4 engines shut down.
Stage Separation
Vulcan core stage separates from the Centaur V upper stage.
MES-1
Main Engine Start 1: twin RL10C engines ignite on Centaur V.
Fairing Jettison
5.4 m payload fairings are discarded.
SECO-1
Centaur reaches its initial parking orbit.
Deployment
Payload is released once precise orbital parameters are met.
Tank Venting / De-orbit
Centaur performs a disposal maneuver and vents remaining propellant, or de-orbits for reentry.
Mission Payload
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. 45 satellites will be carried on each Vulcan launch.