Iridium 11, 14 and Other Obs

Mir16609@aol.com
Sat, 31 Oct 1998 22:35:49 EST

More strobe-like flash obs. from Iridiums 11 and 14.  Each of the following
obs. are the center of a series of negative magnitude flashes.  All dates and
times UTC.

29 October 1998
Iridium 14 - 23:03:54;  23:04:25
Iridium 11 - 23:14:29

31 October 1998
Iridium 14 -  00:11:40, 23:38:11
Iridium 11 - 23:36:48

I was not able to observe any of these passes from beginning to end.  I
suspect that there are flashes in each pass that I did not observe.  

Other obs:
Titan IV R/B 21148 was reasonably on time this evening with elset:
Titan IV r/b  
1 21148U 91017B   98292.76068401  .00104000  00000-0  62964-3 0    04
2 21148  67.9800 178.0135 0042000 170.2428 189.7582 15.75956261    00

My *rough* estimate is that it was running about 15 seconds late.  This object
is bright (about a +2.0 mag at 23:30; 31 October) and a fast mover.  I hope to
make more observations before its January 1999 decay.   

Cosmos 2360 R/B (25407):
I observed 10 flashes to a 3.0 mag in 60 seconds beginning ay 23:40:00 UTC 30
October.

Question:
Someone recently posted that objects that are tumbling will have their rate of
rotation slowed by the earth's magnetic field.   Since R/Bs are mostly
aluminum (a non-magnetic metal)  what specifically causes this slow-down?   A
URL with the explanation would suffice.

Cheers
Don Gardner
Homepage: http://hometown.aol.com/mir16609/
76.8419 W, 39.1796 N,  34m ASL