Cosmos 839 Rk Flashing?

Sue J. Worden (worden@uts.cc.utexas.edu)
Sat, 31 Oct 1998 18:57:05 -0600 (CST)

For those of you who may be interested, Cosmos 839 Rk (9013 / 76 67B)
*may* be flashing again.  Unfortunately, I did not get an accurate
flash timing, but it was on the order of several seconds.  The most
recent PPAS report from 1979 for this object indicated a 200 second
flash period.

I do not entirely trust my observation and hope that others will be
able to confirm whether this object is indeed flashing again.  I was
looking for another object when I instead stumbled across this one,
and only later did I identify it.  Also, I would not be surprised if
the "flashing" I saw was due to some atmospheric effect, rather than
tumbling of the Rk.  Or it could have even been another object that
I overlooked in the process of identification.

--Sue (worden@uts.cc.utexas.edu)

------------------------------------------------------------------------
Cosmos 839 Rk    7.4  2.4  0.0  5.5 v
1 09013U 76067B   98280.10000978 -.00000042 +00000-0 +44696-4 0 01285
2 09013 065.8620 303.0109 0720954 225.8016 128.1554 12.35162949003279
------------------------------------------------------------------------
  30.317  98.258  970.   Pedernales Falls Corral  2000 10.0 15  (UTC-5)
***  1998 Oct  15  Thu evening  *** Times are PM CDT  ***  1945  652
 H  M  S  Tim Al Azi C Dir  Mag Dys F  Hgt Shd  Rng  EW Phs  R A   Dec
 9013 Cosmos 839 Rk  76 67B                12     B 3.5
 9 18 39  0.0 35 278    68  7.2   9 5 13021192 1870 0.5 114 1717  22.7
 9 20 22  0.0 39 293    80  7.0   9 5 13051153 1791 0.5 109 1718  35.1
 9 22  4  0.0 39 310 C  93  6.9   9 5 13061105 1771 0.6 103 1714  48.1
 9 23 46  0.0 37 326   105  6.9   9 5 13041050 1814 0.5  98 17 3  60.9
 9 25 28  0.0 33 340   115  7.0   9 5 1299 987 1914 0.5  93 1632  72.5
Using 10x50 binoculars in clear skies with limiting magnitude about +5
on zenith, but may have had slight haze in west.
------------------------------------------------------------------------