C* 2228, a Tselina-D, observed Flashing !

Walter Nissen (dk058@cleveland.Freenet.Edu)
Sun, 31 Aug 1997 12:38:44 -0400 (EDT)

At 19970831 021050 UTC I observed 
Cosmos 2228      6.0  2.0  0.0  5.2 v 
1 22286U 92094A   97240.16313533 +.00000120 +00000-0 +14860-4 0 01573 
2 22286 082.5287 291.0929 0026456 150.3743 209.8972 14.73806285251270 
(many thanks to Mike McCants for this elset from Ted Molczan's file) 
emerging from the shadow of our Earth.  She was flashing rapidly and 
brightly with a period of 2 seconds (I would have better figures, but both 
of my stopwatches are now inoperative from undeterminable (as yet anyway) 
causes).  I believe this is the first detection of flashing in 2228 (I 
haven't yet figured out how to get the new PPAS into the restricted memory 
of my machine), but whether it is or not, it is confirmation that, as a 
Tselina-D, 2228 has followed her sister ships into dramatic flashing 
behavior.  (You may recall the possibility raised very recently by Leigh 
Palmer that he saw C* 1953 giving a very bright glint).  As she flew 
lower, and dimmer, during the pass, the flashing evolved to where only two 
flashes were visible each 8 seconds or so, separated by about 2 seconds, 
with the second flash the brighter.  She was virtually invisible between 
I had observed 2228 as steady in 1997 March, most recently on March 24, at 
mag 3 or so, naked eye. 
Observations are eagerly welcomed.  Previously C* 1933 and C* 1953 
appeared to lose angular momentum, so perhaps C* 2228 will so do as well, 
presenting most all of you with a fine opportunity to see the flashing 
period evolve.  Apparently for mid-northern latitudes, roughly, there will 
be good passes every coupla days or so for at least the next month or so 
(I tried latitudes 50N, 40N, and 30N for my longitude). 
Thanks for any assistance in monitoring this one. 
Walter Nissen                   dk058@cleveland.freenet.edu 
-81.8637, 41.3735, 256m elevation 
My heart is deeply saddened at the news of the tragedy a Paris.  How ironic 
that the most luminous personality of the world may have died because of the 
very force she seemed finally to be having some success in harnessing to serve 
her humanitarian causes.  My heart goes out, especially, to her young Princes.