Space Launch Hub logoSpace Launch Hub logoSpaceLaunchHub

Explore. Understand. Follow the story.

United Launch Alliance/Vulcan·Space Launch Complex 3E

Vulcan | SDA Tranche 1 Tracking Layer E

Orbit: PO·Type: Government/Top Secret·Agencies: Space Development Agency

Countdown to T-0

GMT Time
Spaceport
To Be Determined
Vulcan | SDA Tranche 1 Tracking Layer E mission image
Vehicle: VulcanCredit: United Launch Alliance · Launch Library 2

Tranche 1 Tracking Layer E is one of five missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Tracking Layer constellation, which will provide global indications, warning, tracking, and targeting of advanced missile threats, including hypersonic missile systems.

Target orbit
PO · Polar Orbit
Mission type
Government/Top Secret
Payload
SDA Tranche 1 Tracking Layer E
Agencies
Space Development Agency
Mission Update

Launch vehicle swap with SDA Tranche 1 Tracking Layer D.

Target liftoff time (UTC)

00:00:00 UTC

Thursday, 31 December 2026

Instantaneous window

Planned T-0 liftoff

00:00:00 UTCWindow open
00:00:00 UTCPlanned ignition
00:00:00 UTCWindow close
Rocket family
Vulcan
Height
61.6m
Diameter
5.4m
Stages
2