At the time of writing this post, the AX4 mission is scheduled for launch on 25 June at 6:31 UTC. With the launch of the mission, the UHU ground-based TLE observation campaign starts, too.

Regardless of the launch of the AX4 mission, we start the TLE ground observation campaign in the framework of the UHU experiment on 25 June.

We welcome observation materials attempting to capture TLEs anywhere on Earth until 31 July.

We encourage you to make observations and share the recorded media as well as the corresponding metadata with us! More information on how one can contribute to our project can be found in the page ‘I can contribute!‘

We wish you successful and joyful TLE observations and we are looking forward to receiving some input from you!