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Clarification: > About 1 half minute later HTV-4 (the Japanese supply vessel passes too, but not as bright) Same general track but a bit lower altitude. What I meant here is that the supply vessel (HTV-4) will pass the same part of sky, approximately a half minute behind the ISS, not to be confused as making its pass a half minute after the ISS completes its pass. So it is possible that both can be seen as they move along ( HTV-4 track relative to any visible stars, is about 30 sec behind ISS and about 8 degrees lower. I might also add that because the pass is earlier than the ISS pass last evening, the sky twilight will be a fair amount brighter. The ISS will appear reasonably bright but the supply vessel may not be as noticeable Sherman W. > THIS EVENING looks like a clear one, so here is another interesting set of passes to see: > > ISS between 9:18 and 9:21 p.m. out of the SW and across the SE (more than half way above the horizon (56 deg in Avonport)) > > About 1 half minute later HTV-4 (the Japanese supply vessel passes too, but not as bright) Same general track but a bit lower altitude. > > A second pass of same I(SS and HTV-4) about 1.5 hr later. This time through the Big Dipper part of the sky (northern) > ISS goes through between 10:55 and 10:56 > HTV-4 goes through between 10:53 and 10:54 . This time the supply vessel is a little ahead of the ISS. > They rendezvous early on Aug 9th > > > Sherman W.
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