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 ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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