ROSAT has re-entered

From: Bob King (nightsky55@gmail.com)
Date: Sun Oct 23 2011 - 03:01:42 UTC

  • Next message: Kevin Fetter: "So darn bight = AEHF with gras scope"

    Hi everyone,
    According to the German Aerospace Center, ROSAT re-entered Earth's
    atmosphere between 1:45 and 2:15 UTC. No confirmation on any falling
    debris. Check their Facebook page: http://www.facebook.com/DLRen
    
    Bob
    
    On Sat, Oct 22, 2011 at 7:55 PM, Ted Molczan <ssl3molcz@rogers.com> wrote:
    > I have updated my plot of decay predictions of ROSAT (1990-049A / 20638), made by myself, The Aerospace Corporation,
    > USSTRATCOM, and Harro Zimmer.
    >
    > http://satobs.org/seesat_ref/misc/ROSAT_decay_predictions_v11.pdf
    >
    > 1. Updated since my previous report:
    >
    > USSTRATCOM's latest TIP prediction, issued Oct 22 at 23:59 UTC, predicts decay on Oct 23 at 02:04 UTC, +/- 2 h:
    >
    > http://www.space-track.org
    >
    > 2. Unchanged since my previous report
    >
    > The Aerospace Corporation's latest prediction, based on the epoch 11294.8581050 TLE, is Oct 23 at 11:12 UTC +/- 10 h:
    >
    > http://reentrynews.aero.org/1990049a.html
    >
    > Harro's latest prediction, issued Oct 22 at 14:30 UTC, is 23 October, 04:17 UTC +/- 4 h:
    >
    > http://satobs.org/seesat/Oct-2011/0233.html
    >
    > My latest Satevo prediction, based on the epoch 11294.8581050 TLE, is Oct 23 near 10:22 h UTC. Uncertainty is about 7 h,
    > based on the 20 percent of time remaining to decay rule of thumb.
    >
    > I am also experimenting with Alan Pickup's Satana program, which attempts to fit more realistic decay terms to the
    > existing TLEs. Using that method, I obtain predicted decay on Oct 23 at 01:37 UTC. I have included two new plots, which
    > include the Satana results at daily intervals since Oct 13. The results seem interesting, but I am still learning how to
    > use this method, so beware!
    >
    > Ted Molczan
    >
    >
    >
    > _______________________________________________
    > Seesat-l mailing list
    > http://mailman.satobs.org/mailman/listinfo/seesat-l
    >
    _______________________________________________
    Seesat-l mailing list
    http://mailman.satobs.org/mailman/listinfo/seesat-l
    



    This archive was generated by hypermail 2b29 : Sun Oct 23 2011 - 03:02:36 UTC