SPACEX

Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer D

TBD Falcon 9 →
—
—
Dec 31, 2026 at 00:00 UTC
Polar Orbit Government/Top Secret Vandenberg SFB, CA, USA 100% success
Initializing Launch Globe…
Live Orbit
⏺Fullscreen
Mission Control3D trajectory · Live telemetry · AI narrator · Booster tracking
PADSpace Launch Complex 4E
SITEVandenberg SFB, CA, USA →
ORBITPolar Orbit
TYPEGovernment/Top Secret

Tranche 1 Tracking Layer D 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.

VEHICLE
Falcon 9
AGENCY
SpaceX
MISSION
SDA Tranche 1 Tracking Layer D
MISSION TYPE
Government/Top Secret
TARGET ORBIT
Polar Orbit
COUNTRY
USA
TENTATIVEPrecision: Half-year
LAUNCH LIBRARY 2 PRIMARY
API ID: a9ee8337-127d-4f17-9e3a-a07999f80099
Reported date: Dec 31, 2026 at 00:00 UTC
Last synced: 10 minutes ago
SPACEX API
Cross-referenced with community SpaceX data
This launch date is approximate. The provider has not confirmed an exact date or time yet. The schedule may change.
Loading weather…
Select a location to check if this launch is visible from where you are
MANUFACTURER
SpaceX
VARIANT
Block 5
FLIGHTS
642
SUCCESSES
641
SUCCESS RATE
99.8%

Falcon 9 is a two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of satellites and the Dragon spacecraft into orbit. The Block 5 variant is the fifth major interval aimed at improving upon the ability for rapid reusability.

When is the Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer D launch?
The Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer D is scheduled for Thursday, December 31, 2026 at 12:00 AM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: TBD.
What rocket is being used for SDA Tranche 1 Tracking Layer D?
The Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer D mission uses the Falcon 9 rocket, manufactured by SpaceX. The Falcon 9 has flown 642 times with a 99.8% success rate.
Where is the Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer D launching from?
The launch takes place from Space Launch Complex 4E at Vandenberg SFB, CA, USA.
What orbit is SDA Tranche 1 Tracking Layer D going to?
The SDA Tranche 1 Tracking Layer D mission is targeting Polar Orbit.
Who is launching SDA Tranche 1 Tracking Layer D?
The Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer D is operated by SpaceX.
Can I watch the Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer D launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
Oct 25, 2026 05:14 UTC
Launch added to tracker
Imported from Launch Library 2 API
Oct 25, 2026 05:14 UTC
Launch date set: Dec 31, 2026 at 00:00 UTC
NET (No Earlier Than) confirmed by SpaceX
Last data sync: 10 minutes ago
●Launch Library 210 minutes ago
Launch ID: a9ee8337-127d-4f17-9e3a-a07999f80099
●Open-Meteo Weather1 month ago
Pad weather at 34.63, -120.61

Mission Profile

SDA Tranche 1 Tracking Layer D is a Falcon 9 Block 5 mission operated by SpaceX set to lift off from Space Launch Complex 4E, Vandenberg SFB, CA, USA on December 31, 2026. The flight is tasked with delivering its payload on a government/top secret mission to Polar Orbit.