From: University of California Berkeley
Posted: Thursday, January 3, 2002
The following note was sent out to the EUVE Guest Observers email list.
For more information on this mission and its termination see:
Dear EUVE GOs,
It is looking like re-entry might be this month -- a couple months sooner than we all thought.
We are no longer relying on FDF for info on the orbit decay.
Heavens-above.com shows it at 302 km altitude today (this is down from the original ~527 km). Apparently, once it gets down to about 300 km it will be fall very quickly.... and death is imminent at 200 km. It has been losing at least a km every day now for the last couple weeks.
Former EUVE scheduler Bryce Roberts found a website with reentry predicts at www.wingar.demon.co.uk/satevo/current.htm. This isn't always up to date, but the guy provides a script (www.wingar.demon.co.uk/satevo/#Download) that takes realtime NORAD data (www.celestrak.com/NORAD/elements/science.txt) and comes up with re-entry predicts. Using the script with the more recent numbers, the latest is January 21!!!!
NORAD's data is *usually* only good for the next 24 hours. Because of the way they measure the drag component for orbits the data is very unrelaible for reentry predictions. So, the above can never be very accurate...
Soon, the Aerospace Corporation will be following the EUVE reentry at www.reentrynews.com/upcoming.html. They will start predictions once they think we are about a month before the reentry.
I will likely email you all again before burn-up, but these sites will be the best way for you to keep on top of it.
Happy New Year!
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