AO-73 : Funcube-1

Rotation Period

20 May 2022 = 4.12 seconds (from the Sun Sensor Data)
21 May 2022 = 3.13 seconds (from the Sun Sensor Data)
22 May 2022 = 3.71 seconds (from the Sun Sensor Data)
23 May 2022 = 3.52 seconds (from the Sun Sensor Data)
24 May 2022 = 3.25 seconds (from the Sun Sensor Data)
25 May 2022 = 3.22 seconds (from the Sun Sensor Data)
26 May 2022 = 3.11 seconds (from the Sun Sensor Data)

AO-73 continues spinning about the Z-Z axis with the Z-Z axis slowly precessing about AO-73’s centre of mass in a non-stable attitude.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

13 May 2022 = 5.19 seconds (from the Sun Sensor Data)
14 May 2022 = 5.38 seconds (from the Sun Sensor Data)
15 May 2022 = 5.29 seconds (from the Sun Sensor Data)
16 May 2022 = 5.00 seconds (from the Sun Sensor Data)
17 May 2022 = 4.71 seconds (from the Sun Sensor Data)
18 May 2022 = 7.10 seconds (from the Sun Sensor Data)
19 May 2022 = 4.31 seconds (from the Sun Sensor Data)

AO-73 continues spinning about the Z-Z axis with the Z-Z axis slowly precessing about AO-73’s centre of mass in a non-stable attitude.

73 de Colin VK5HI.

AO-73 : Fucube-1

Rotation Period

06 May 2022 = 5.36 seconds (from the Sun Sensor Data)
07 May 2022 = 5.33 seconds (from the Sun Sensor Data)
08 May 2022 = 5.55 seconds (from the Sun Sensor Data)
09 May 2022 = 5.25 seconds (from the Sun Sensor Data)
10 May 2022 = 5.24 seconds (from the Sun Sensor Data)
11 May 2022 = 5.25 seconds (from the Sun Sensor Data)
12 May 2022 = 5.33 seconds (from the Sun Sensor Data)

AO-73 continues spinning about the Z-Z axis with the Z-Z axis slowly precessing about AO-73’s centre of mass in a non-stable attitude.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

29 Apr 2022 = 5.43 seconds (from the Sun Sensor Data)
30 Apr 2022 = 5.55 seconds (from the Sun Sensor Data)
01 May 2022 = 5.50 seconds (from the Sun Sensor Data)
02 May 2022 = 5.10 seconds (from the Sun Sensor Data)
03 May 2022 = 5.15 seconds (from the Sun Sensor Data)
04 May 2022 = 5.50 seconds (from the Sun Sensor Data)
05 May 2022 = 5.29 seconds (from the Sun Sensor Data)

AO-73 continues spinning about the Z-Z axis with the Z-Z axis slowly precessing about AO-73’s centre of mass in a non-stable attitude.
The “event” on the 22nd April appears to have affected both the spin and the attitude of AO-73 this last week.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

22 Apr 2022 = 8.75 seconds (from the Sun Sensor Data)
23 Apr 2022 = 5.24 seconds (from the Sun Sensor Data)
24 Apr 2022 = 5.23 seconds (from the Sun Sensor Data)
25 Apr 2022 = 5.40 seconds (from the Sun Sensor Data)
26 Apr 2022 = 5.45 seconds (from the Sun Sensor Data)
27 Apr 2022 = 5.36 seconds (from the Sun Sensor Data)
28 Apr 2022 = 5.40 seconds (from the Sun Sensor Data)

AO-73 continues spinning about the Z-Z axis with the Z-Z axis slowly precessing about AO-73’s centre of mass in a non-stable attitude.
The “event” on the 22nd April has affected both the spin and the attitude of AO-73 and the latest WOD of 28th April is attached below.

The most recent WOD downloaded from AO-73 on the 0604utc pass over VK on 28th April 2022.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

15 Apr 2022 = 4.31 seconds (from the Sun Sensor Data)
16 Apr 2022 = 4.44 seconds (from the Sun Sensor Data)
17 Apr 2022 = 4.48 seconds (from the Sun Sensor Data)
18 Apr 2022 = 4.67 seconds (from the Sun Sensor Data)
19 Apr 2022 = 4.83 seconds (from the Sun Sensor Data)
20 Apr 2022 = 4.94 seconds (from the Sun Sensor Data)
21 Apr 2022 = 5.09 seconds (from the Sun Sensor Data)

AO-73 continues spinning about the Z-Z axis with the Z-Z axis slowly precessing about AO-73’s centre of mass in a non-stable attitude. AO-73 continues to exhibit small incremental increases in rotational period.
73 de Colin VK5HI.

MIR-SAT 1 (MO112) has de-orbited

MIR-SAT1    2022-04-18 0:00:00  decay_msg

Jean Marc Momple, 3B8DU reports: “It seems to be confirmed that MIR-SAT 1 re-entered.
The last valid telemetry signals of MIR-SAT 1 (worldwide) was received in Mauritius with the UoM ground station by YOG-3B8 (Dr Yogesh Beeharry,
Lecturer of the Department of Electrical and Electronic Engineering, Faculty of Engineering of the University of Mauritius). Yogesh, member of this forum
led a team of UoM students who build their own ground station. This was at 01:36 Hrs local time this morning and JA0CAW (Tetsu, an experience Satellite
HAM) confirmed to me by mail that no signals was received from MIR-SAT 1 at 05:03 (MRU time). More many other regular reporting HAMs confirmed to me
that no signals received from our bird today.

This confirms that MIR-SAT 1 re-entered between 01:36 and 05:03 Hrs and probably burned up around 110Km in a blast of flame, unfortunately the
location is not known as mainly over oceans during the time window.
I also confirm that a few minutes before last observation from Yogesh that I received the TLM of MIR-SAT 1 and also made successful Digipeats through it
(see attached screenshot), the bird was at about 160km altitude at that time, this was my farewell to MO-112.
Congratulations to Yogesh to be the last recorded person on this planet to have successfully decoded our 3B8 bird.
RIP MIR-SAT 1, you have been a great tool for educational and HAM experiments.
One page turned and the next (better) opens, MIR-SAT 2 ??? why not?, just a question of vision, willingness, motivation and hard work.

73, Jean Marc, 3B8DU”

AO-73 : Funcube-1

Rotation Period

08 Apr 2022 = 3.61 seconds (from the Sun Sensor Data)
09 Apr 2022 = 3.73 seconds (from the Sun Sensor Data)
10 Apr 2022 = 3.83 seconds (from the Sun Sensor Data)
11 Apr 2022 = 3.93 seconds (from the Sun Sensor Data)
12 Apr 2022 = 4.00 seconds (from the Sun Sensor Data)
13 Apr 2022 = 4.07 seconds (from the Sun Sensor Data)
14 Apr 2022 = 4.22 seconds (from the Sun Sensor Data)

AO-73 continues spinning about the Z-Z axis with the Z-Z axis slowly precessing about AO-73’s centre of mass in a non-stable attitude.
This week AO-73 has continued to exhibit small incremental increases in rotational period.

The WOD of 13th April displaying the non-stable attitude.

73 de Colin VK5HI.