Space Launch Hub logoSpace Launch Hub logoSpaceLaunchHub

Explore. Understand. Follow the story.

SpaceX/Falcon 9 Block 5·Space Launch Complex 4E

Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer A

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

Countdown to T-0

GMT Time
Spaceport
To Be Determined
Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer A mission image
Vehicle: Falcon 9 Block 5Credit: SpaceX · Wikimedia Commons

Tranche 1 Tracking Layer A 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 A
Agencies
Space Development Agency
Mission Update

NET May-Q2 (unclear which of the lettered groups will fly first).

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
Falcon
Height
70m
Diameter
3.7m
Payload to LEO
22,800kg
Liftoff thrust
7,607kN
Stages
2
Falcon 9 | SDA Tranche 1 Tracking Layer A | Space Launch Hub