Raduga 27 spinup

rkresken@esoc.esa.de
Wed, 9 Jun 1999 09:30:44 +0100

Hi!
Together with Gunnar Glitscher, I had an oportunity to observe
Raduga 27 this morning from 0:05 to 0:45 UTC. We observed
two things:
- The satellite is still spinning up. The period is now 78.5662 +- 0.005
sec
-  We both had the impression that the flashes are not symmetric. It seems
   as if we have a bright -faint -bright -faint pattern, but this is very
elusive.
   Both (if they are different at all) were between mag 6 and 7.
Any deviation from symmetry  would be a possible cause of solar radiation
torques on the satellite and thus explain the continuing spinup. Any other
explanation like venting fuel seems unlikely to me.

Rainer

RADUGA 27
1 21132U 91014A   99155.37960313 +.00000150 +00000-0 +00000-0 0 02422
2 21132 005.1530 067.6897 0003338 203.9877 155.7701 01.00197957030290