Data checked:

Firefly Alpha Block 2 | TacSat
TBD

Firefly Alpha Block 2 | TacSat

TO BE DETERMINED
> T-MINUS (NET)
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Target time only (NET — no earlier than). This launch is not yet confirmed and may slip.

> MISSION DATA

DATEThursday, December 31, 2026
TIME12:00 AM UTC
PROVIDERFirefly Aerospace
ROCKETFirefly Alpha Block 2
PADSpace Launch Complex 2W
LOCATIONVandenberg SFB, CA, USA
ORBITLow Earth Orbit

> MISSION BRIEFING // TECHNOLOGY

First of up to 25 launches of Low Earth Orbit technology demonstration satellites to be built and operated by Lockheed Martin. TacSat is an intelligence, surveillance and reconnaissance spacecraft with a mission to prove specialized sensing and communications capabilities on orbit. The satellite will participate in exercises that highlight cross-domain kill-web connectivity, enabling timely execution of tactical space missions. TacSat will host a proven Lockheed Martin infrared sensor on board that brings previously developed technology to space for the first time. This sensor produces high quality imagery and it can interface with federated Battle Management Command & Control (BMC2) combat systems to provide joint forces with a comprehensive view of threats. The satellite will also feature Lockheed Martin’s first 5G.MIL® payload on orbit. This provides cellular-like networking for military space assets, making satellite constellations more resilient. It also helps enable seamless connectivity with tools in the air, at sea and on land. Launch operation will also again demonstrate responsive space pre-launch operation capabilities.

> SCHEDULE & SOURCE

Source-reported status: To Be Determined. Current date is a placeholder or rough estimation based on unreliable or interpreted sources.

Launch window: 2026-12-31 00:00:00 UTC — 2026-12-31 00:00:00 UTC.

Dates and windows may change. Passing the scheduled time does not confirm a launch outcome.

Launch data from The Space Devs

Understand launch windows and orbits · Launch provider guide