Shuttle/Progress/ISS viewed together

Date: Mon Dec 11 2000 - 05:00:00 PST

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    Last night was a triple-header flyover in twilight as  STS-97, Progress M1-4
    and the ISS were all easily seen flying over Houston just after local
    sunset. The interesting thing about this pass is that all objects reached
    the same brightness of -1.5 at some point in their trajectories. Even with
    the addition of the large solar arrays, the relative brightness of ISS has
    not flared up yet to exceed that of Mir at its brightest. Progress is
    normally +3.5 and when anti-sun, about +2.5. I was really shocked to see it
    shoot up to -1.5 for about 6 or 8 seconds. All three objects were recorded
    on video. STS-97 and Progress were separated by 51 seconds, and Progress and
    ISS separated by 4m 06 seconds in pass time.
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