T1H-1 — time, objective & broadcast

Themis Demonstrator: Q4 2026 · UTC. A test flight checking rocket and mission systems.

Times in Dates and times account for daylight saving changes.

TentativeEuropean Space Agency

Themis Demonstrator

T1H-1

Mission objective

A test flight checking rocket and mission systems.

ORBIT: Sub

APPROXIMATE COUNTDOWN

Schedule to be refined

Q4 2026 · UTC

Tentative quarter · Schedule may change

FOLLOWING YOUR FIRST LAUNCH?

Understand this mission

HOW HIGH?

Maximum altitude not provided

Suborbital flight · SUB

A flight without a full orbit of Earth. The label alone does not specify its altitude.

Exact altitude for this mission: unavailable in our source.

Orbit explanation · ESA ↗

Logarithmic scale compresses large distances. The range describes the payload’s orbit, not the maximum altitude of the whole rocket.

Compare with the Moon and learn the basics ↗

What is it for?

Test: checking a rocket or technology for future missions.

Explanation of the mission category reported by the source.

Rocket or payload?

Themis Demonstrator is the launch vehicle. Its payload is what it carries, such as a satellite, probe or spacecraft. Rocket stages can follow different paths.

How a launch works · NASA ↗

Quick glossary: orbit, stage, apogee and perigee

Orbit: A path around a body such as Earth. Reaching orbit requires enough speed as well as altitude.
Rocket stage: A rocket section with its own propulsion for part of the flight.
Apogee / perigee: The farthest / nearest point to Earth on an orbit. This is why altitude is often described by two numbers.

WHERE DOES IT LAUNCH?

Esrange Space Center

Launch Complex 3B

67.87737°, 21.16500°

Open the exact location ↗

WATCH THE MISSION

Launch broadcasts

No broadcast link has been published in our source yet. Check back closer to launch.

Launch window

31 Dec 2026, 00:00 → 31 Dec 2026, 00:00 · UTC

What does a launch window mean? ↗

Calendar downloads are one-time entries and do not track rescheduling.

The data could not be confirmed as current. Showing a saved dataset; verify the schedule with the operator.

Explore with Orbivo

All rocket launches ↗Learn the basics of space ↗Past launches & outcomes ↗Next SpaceX launch ↗Next Starship flight ↗What is a launch window? ↗Why do launches slip? ↗