Re: Cosmos 2264 observation!

Bjorn Gimle (bjorn.gimle@online.dextel.se)
01 Aug 1995 12:14:27 GMT

Re: Brilliant Cosmos 2264 (#22808)

I observed Cosmos 2264 on two passes yesterday. On the first pass,
the Sun was 4.5 degrees below the horizon, and I could barely find
Vega with my naked eye. But the EORSAT was as bright as before -
closer to -2 than to -1 !

Then, I observed it on the next pass, in NNW, and it was like a normal
EORSAT. So much for yesterday's wild speculation! 
I also observed Cosmos 2293, #23336, which is identical (6.0 m dia,
2.5 intrinsic magnitude), and followed the track of the first pass
of #22808 ( they were co-planar before #22808 was lowered).
It was also normal magnitude.

USA 86, #22251 was one minute before prediction, and very faint (+7m)
It was steady - no flashes like April to early July this year.

Object Date   UTC  Azimuth Elevation Magnitude QuickSat prediction
#22808 950727 2106   140      35         -1       +1.1
#22808 950728 2051   140      38         -2       +1.0
#22808 950729 2035   140      40         -2       +0.9
#22808 950730 2018   140      41         -2       +0.8
#22808 950731 2000   140      41         -2       +0.8
#22808 950731 2132   330      31         +3.9     +3.1
#23336 950731 2140   140      42         +2.2     +1.8

RCS for #22808 is currently given as 17 m2 - other EORSATS have had 
values up to 100 and over. Does anyone know if it is differently 
shaped, e.g. has a large flat surface ? If it really has an orbit
control system still running, it should be maintaining its 
attitude, and I could have been very lucky with my SE passes !

=========================================================
Bjorn_gimle@lector.kth.se == bjorn.gimle@duesenberg.se ==
== bjorn.gimle@online.dextel.se ;  59.22371 N, 18.22857 E
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