Rotation Period

29 May 2020 = 20.9 seconds (from averaged panel temperatures)
30 May 2020 = 20.3 seconds (from averaged panel temperatures)
31 May 2020 = 20.0 seconds (from averaged panel temperatures)
01 Jun 2020 = 20.8 seconds (from averaged panel temperatures)
02 Jun 2020 = 21.2 seconds (from averaged panel temperatures)
03 Jun 2020 = 21.5 seconds (from averaged panel temperatures)
04 Jun 2020 = 21.1 seconds (from averaged panel temperatures)

This week AO-73 has commenced its complex tumbling phase due to its non-central Moment of Inertia.

73 de Colin VK5HI.

Rotation Period

22 May 2020 = 30.5 seconds (from averaged panel temperatures)
23 May 2020 = 28.9 seconds (from averaged panel temperatures)
24 May 2020 = 26.8 seconds (from averaged panel temperatures)
25 May 2020 = 25.4 seconds (from averaged panel temperatures)
26 May 2020 = 23.8 seconds (from averaged panel temperatures)
27 May 2020 = 22.2 seconds (from averaged panel temperatures)
28 May 2020 = 21.5 seconds (from averaged panel temperatures)

AO-73 over the last week has exhibited increased Nutation with increasing rotational spin (reduced spin period).
This week we may see AO-73 commence tumbling due to its non-central Moment of Inertia.

73 de Colin VK5HI.