Themis Demonstrator T1H-1

Themis Demonstrator · European Space Agency

NET December 2026

Mission brief

What is happening

European Space Agency is launching T1H-1 on a Themis Demonstrator from Launch Complex 3B at Esrange Space Center. It is a test flight heading to Suborbital. The first stage, T1H, is making its first flight, and will attempt a landing back at the launch site.

Why it matters

Test flights exist to find out what a vehicle can do, so an outcome short of complete success can still be a useful result for the programme.

What stands out

Suborbital flightTest flightNew booster, first flight

At a glance

Destination: Suborbital
Payload: T1H-1
Mission type: Test Flight
Rocket: Themis Demonstrator
Provider: European Space Agency
Booster: T1H · flight 1
Landing: Return to launch site
Launch site: Launch Complex 3B

First low-altitude hop test of a Themis demonstrator, with a targeted altitude up to 100 m.

What changed

Every change to this schedule, logged as it happened. Most trackers only ever show you today's date.

OCT 6 · 2:45 PM UTC
Date precision now Q4
Detected by RocketRune
OCT 6 · 2:45 PM UTC
Window closes 92 days later
2026-09-30 00:00 UTC → 2026-12-31 00:00 UTC
Detected by RocketRune
OCT 6 · 2:45 PM UTC
Window opens 92 days later
2026-09-30 00:00 UTC → 2026-12-31 00:00 UTC
Detected by RocketRune

4 more entries in the full history of this launch. RocketRune Pro shows every change and every dated note.

Schedule confidence

LOW

Treat this date as provisional.

Why does RocketRune rate it this way?

Only a target quarter has been announced.
The provider has not committed to this date.
The launch time has held for 20 days.

This is a RocketRune assessment of how firm the published schedule is, not a prediction of launch success. It is calculated from the date precision and status published by the launch provider, plus the schedule changes RocketRune has recorded for this mission.

Launch site: Launch Complex 3B, Esrange Space Center
Vehicle: Themis Demonstrator
Provider: European Space Agency
Orbit: Sub
Payload: T1H-1
Status: To Be Determined
Booster: T1H
Landing: Return to Launch Site
Vehicle height: 28 m
Liftoff thrust: 980 kN

Can you see this launch from where you are?

RocketRune works out the direction to look, how high the rocket will sit in your sky, the cloud forecast over you and whether the plume will be lit, then scores it out of 100.

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