AMSAT-Deutschland e.V. https://amsat-dl.org
charitable non-profit organisation, designing, building and operating hamradio #AMSAT satellites since 1973. Home of the Phase3 satellites and first Phase4A geostationary #QO100 S/X transponder
AMSAT-DL
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Tianwen-2 at AOS after arriving at Asteroid AST469219. We are also live streaming on our Youtube channel.
Tianwen-2: At 23:37:00 UTC the signal suddenly faded away. Before it completely disappeared, some sudden frequency jumps in the doppler were noticeable. More later...
Just a quick update on Tianwen-2. We saw several events before LOS- At 23:06:10 UTC the data rate was reduced, probably in preparation for some trajectory maneuvers.
📡Proud to receive this Certificate of Recognition from @NASA
! AMSAT-DL successfully tracked the Orion spacecraft during the Artemis II mission – proving that amateur radio operators can contribute to historic space exploration. Thank you, NASA SCaN! 🌕 #AMSAT #Artemis #HamRadio #Bochum
Tianwen-2 is a Chinese mission that will return samples from the Earth quasi-satellite #Asteroid 469219 Kamoʻoalewa. Today the angular distance of TW-2 from AST469219 is 0.295°. This is reducing at a rate of -0.0559°/day. At that rate TW-2 will reach Kamoʻoalewa on Jun 07 03:20 UTC.
Hello England, after 38 years in the USA I have returned!!
Second, @amsat-dl.org has decoded around 12 hours of telemetry. I run all this telemetry through the same analysis, showing that there are no relevant differences compared to the telemetry received by @radiotelescoop.bsky.social.
Read more: destevez.net/2026/05/an-u...
We think a Tianwen-2 manoever happened early 7 June, as expected. With the Bochum telescope (@amsat-dl.org) and the Dwingeloo telescope, we observe that a) Tianwen-2 is close to the asteroid on the sky and b) the change in the line-of-sight velocity (Doppler) now almost matches that of the asteroid.
Tianwen-2 launched just over a year ago and is expected to perform a burn tomorrow (June 7) Beijing time, setting up a rendezvous with the small, rapidly-spinning asteroid Kamo'oalewa.
I can confirm that QO-100 is still hanging out at its usual location 😀
My first optical satellite tracking observation.
@amsat-dl.org
