Update on Iridium 27 reentry

From: Matson, Robert (ROBERT.D.MATSON@saic.com)
Date: Thu Jan 31 2002 - 18:33:29 EST

  • Next message: Ed Cannon: "Re: Update on Iridium 27 reentry"

    Hi All,
    The decay trend is improving on Iridium 27 for southern California.  A few
    hours ago I
    would have put the odds of it occurring during the L.A. pass at about 1%.
    Drag seems
    to have increased a little more than expected, backing up the reentry time.
    I would
    now say the chances are pretty good that reentry will occur within +/- 1 rev
    of the
    California-Nevada-Oregon-Washington pass, and I'm inclined to increase our
    of observing it to 5% based on our favorable location downrange of a
    satellite local
    altitude minima.
    Those in Texas, Oklahoma, Kansas, eastern Nebraska and western Iowa we'll be
    encouraged to hear that their chances have improved dramatically as well --
    rev earlier than the California pass.  The track looks like it goes
    northbound a bit
    west of Houston around 20:18 CST, and almost directly over Dallas a minute
    later.  Oklahoma City is also pretty close to the reentry track, as is
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    This archive was generated by hypermail 2b29 : Thu Jan 31 2002 - 18:39:32 EST