BEESAT-4 retweeted
(1/5) TUBIN/TUBSAT-27 (NORAD 48900) is about to re-enter Earth’s atmosphere in the next week (likely 2025-12-16). It is transmitting a beacon every 10 s at 435.950 MHz. Further information can be found in the @LibreSpace_Fnd forum:
community.libre.space/t/tubi…
#TUBIN #TUBSAT @SatNOGS
While I decayed now over a year ago ☄️, my older brother #BEESAT-1 yesterday celebrated his 15th orbit anniversary 🎉 and thanks to the students @StudOps is now stronger than ever in the last decade 📡🛰️
Happy 15th anniversary #BEESAT! Launched in 2009, operated until 2013, recovered in 2024. This morning we successfully powered up the sun sensors and magnetometers for the first time in over 10 years! Telemetry looks good so far as we continue checking the state of the satellite.
ALT BEESAT during integration
ALT BEESAT is closed during integration
ALT PSLV launch
ALT Separation mechanism of BEESAT
BEESAT-4 retweeted
Many thanks to @SatNOGS and all other radio amateurs, you made observations until the very end possible! In the last weeks over 1300 observations from all over the world tracked and recorded data from BEESAT-4, most likely the last one was “1425 - Eddyosp-UHF” at 15:45:08 UTC.
BEESAT-4 retweeted
Farewell #BEESAT-4,
our CubeSat reentered Earth's atmosphere today. With this last beautiful #imagefromspace, showing the full moon above Earth's horizon, we want to say goodbye. Designed for only one year but in continuous operation for over 7 years, until its decay today.
ALT The last BEESAT-4 image taken, showing the moon over Earth’s horizon. The image was taken on 4th August 2023 at 12:47:22 UTC.
BEESAT-4 retweeted
#BEESAT-4 reentry update:
- Date: 2023-09-23, probably afternoon
- Altitude: ~230 km
- Decay rate: >12 km/day
- TLEs are becoming unprecise, resulting in problems with ground station tracking
- Best-effort to continuously activate transmission of standard telemetry (APID 0,1,2,5)
BEESAT-4 retweeted
#BEESAT-4 will be the first 🛰️of @TUBerlin to de-orbit since the demise of TUBSAT N in April 2002 - more than two decades ago!
It's been one of the work-horses of @StudOps and thanks to their great efforts we hopefully get some insight into how far down it can make it! ❤️🔥
If any HAM enthusiast @SatNOGS wants to listen now is your last chance. BEESAT-4 transmits regularly during passes over our Berlin ground station. At the mark of ~2 days remaining, we will start continuously transmission of standard telemetry. Find more on
tu.berlin/en/raumfahrttechni…
BEESAT-4 retweeted
On #BEESAT-4's 7th orbit jubilee we sadly have to announce its upcoming #reentry in earth’s atmosphere in ~12 days. After all this time it is still regularly used by @StudOps. Find more information about the planned End of Life Operations on our website:
tu.berlin/en/raumfahrttechni…
ALT GMAT-Simulation of the BEESAT-4 orbit hight from 06th September 2023 until its reentry. The hight starts at about 300 km and decreases exponentially until it reches under 100 km on the 21st September 2023
ALT BEESAT-4 Flight Model
Todaay, I am already three years in orbit!
Happy orbitday!
Three years ago, #BEESAT4 was separated by @DLR_en satellite BIROS.
Besides conducting technology demonstration experiments, the CubeSat took images from Earth in the 3rd year of operation.
On May 2, 2019 #BEESAT4 photographed Antarctica during winter time.
ALT Antarctic Peninsula on May 2, 2019 captured by #BEESAT4
BEESAT-4 retweeted
Starting our new weekly series of #ImagesFromSpace taken by #TechnoSat of @TUBerlin over the last 2 years: Checkout New Celedonia and the cool atolls around taken in October 2018!
BEESAT-4 retweeted
Lift Off! BEESAT 9-13 successfully launched from Vostochny Cosmodrome by @roscosmos and @EXOLAUNCH .
Separation of the five picosatellites is scheduled for 10:06 UTC and #BEESAT-9 will activate its beacon at 10:37 UTC @TUBerlin
BEESAT-4 retweeted
BEESAT-9 TLE for tomorrows launch:
1 99990U 19001a 19186.42129861 .00000000 00000-0 00000-0 0 19
2 99990 097.5444 148.1364 0018488 174.4536 124.7361 15.14664823 12
Thank you @EXOLAUNCH for the launch opportunity and the great help during the preparations phase!
On Friday my successor will be launched into orbit! Stay tuned for more information like TLEs and time schedules.
On Friday July 5, 2019 at 07:41 CEST our picosatellites BEESAT 9-13 are launched from the Vostochny Cosmodrome in Russia.
Information for radio amateurs can be found under raumfahrttechnik.tu-berlin.d…
Watch the launch live: roscosmos.ru/26335/
On the 5th of September, I passed BIROS at a very close distance of a few kilometers. I used this opportunity to capture images of the satellite which released me two years ago!
raumfahrttechnik.tu-berlin.d…
ALT STK simulation of the orbit constellation and image frame
ALT The small bright dot is BIROS
Today, BEESAT-3 was heard by @dk3wn! He also decoded some frames. Currently, operations team is using high elevation passes in Berlin around noon to receive some telemetry.
Blog entry from @dk3wn:
dk3wn.info/p/?p=84236
Recent news message:
raumfahrttechnik.tu-berlin.d… teapaw.org/dk3wn/status/953595600…
Telemetry Downlink will be activated at 2017-11-19 00:00 UTC until 2017-11-19 03:10. One Frame every five seconds, alternating both transceivers.