RE: NROL-24: updated search elements

From: Ted Molczan (
Date: Mon Dec 10 2007 - 16:19:35 UTC

  • Next message: Ted Molczan: "NROL-24: search elements updated for new launch time"

    I wrote:
    > Visual observers in and near North America's eastern time 
    > zone may be able to observe the Centaur's propellant dump
    Assuming launch on-time, the *very* approximate line of demarcation runs through
    Winnipeg, Kansas City, Tulsa and New Orleans, which would be just inside the
    zone of visibility, i.e. pass occurs soon after local sunset. Observers anywhere
    east (perhaps even a bit west) of that line are in the zone of visibility.
    I do not know the duration of the launch window, but I suspect it to be at least
    about 30 minutes. A launch later in the window would extend the zone of
    visibility westward.
    Ted Molczan
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