Hello everyone,
Yesterday , I made an interessant observation of Intelsat 4A6 Rk (78035B
10779). First, I counted 50 flashes, and during this observation, I remarked
that two consecutive flashes had not the same aspect : one was more bright
and sharp, the other one was smoother, like a flare. It suggested that I was
counting the HALF period.
3' 52.84" / 50 = 4.66" * 2 = 9.32" for the whole period
Then I used my stop watch and I found an asymetrical period : 4.73" between
the sharp flash and the smoother
4.58" for the other interval
But at the end of this second sequence of measures, the two periods were
less and less different and suddenly (at 22:10 UT), a little flash appeared
short after the sharp one : F f A F with following intervals :
F-f = 1.28"
f-A = 3.35"
A-F = 4.69"
which gives again a period of 1.28+3.35+4.69 = 9.32"
How can be explained this modification of the pattern? synodic effect?
Michel
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