AO-73 : Funcube-1

09 Oct 2020 = 162.1 seconds (from averaged panel temperatures)
10 Oct 2020 = 116.9 seconds (from averaged panel temperatures)
11 Oct 2020 = 163.3 seconds (from averaged panel temperatures)
12 Oct 2020 = 170.8 seconds (from averaged panel temperatures)
13 Oct 2020 = 153.0 seconds (from averaged panel temperatures)
14 Oct 2020 = 158.8 seconds (from averaged panel temperatures)
15 Oct 2020 = 145.5 seconds (from averaged panel temperatures)

On the 9th October AO-73 “snapped out” of its complex attitude and motion and resumed a stable motion and attitude about the Z-Z axis, albeit the spin direction being in the reverse direction.
It has retained this spin direction since the 9th October.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period
02 Oct 2020 = 25.8 seconds (from averaged panel temperatures)
03 Oct 2020 = 30.2 seconds (from averaged panel temperatures)
04 Oct 2020 = 39.8 seconds (from averaged panel temperatures)
05 Oct 2020 = 65.0 seconds (from averaged panel temperatures)
06 Oct 2020 = 81.9 seconds (from averaged panel temperatures)
07 Oct 2020 = 77.3 seconds (from Sun Sensor Data)
08 Oct 2020 = 86.9 seconds (from Sun Sensor Data)

AO-73 continues to exhibit a very complex attitude and motion.

73 de Colin VK5HI.

AO-73 : Funcube-1

Rotation Period

25 Sep 2020 = 16.0 seconds (from averaged panel temperatures)
26 Sep 2020 = 15.5 seconds (from averaged panel temperatures)
27 Sep 2020 = 15.8 seconds (from averaged panel temperatures)
28 Sep 2020 = 16.9 seconds (from averaged panel temperatures)
29 Sep 2020 = 18.6 seconds (from averaged panel temperatures)
30 Sep 2020 = 22.7 seconds (from averaged panel temperatures)
01 Oct 2020 = 25.3 seconds (from averaged panel temperatures)

During this last week on some of the downloads over VK we have observed the Dzhanibekov Effect where the spin motion of AO-73 has reversed back and forth during a single pass. Additionally the spin motion has been either normal or reversed on consecutive passes.
AO-73 is now exhibiting a very complex attitude and motion, refer graphic below.

73 de Colin VK5HI