I hope this is close to on-topic. I'm including the links below because some may find them to be fairly interesting reading. I think it's now solved for sure, if not over-solved, and I won't write about it again. Space-Track.org replied that "TIP" stands for "Trajectory Impact Prediction". Based on that and searching on "impact prediction" (Why didn't I think of that in the first place?!) I found that exact term in this document: USA FEMA "National Warning System Operations Manual", section on "Atmospheric Space Debris Reentry", page 2-6, b.(1) -- http://www.fema.gov/pdf/library/1550_2.pdf That says that FEMA officials are to get re-entry predictions on the last few revolutions before re-entry. Same/similar/related terms: EPA: Federal Register: "Licensing and Safety Requirements for Operation of a Launch Site" -- http://www.epa.gov/fedrgstr/EPA-IMPACT/2000/October/Day-19/i26088.htm "Expected casualty calculations for commercial space launch and reentry missions" -- http://ast.faa.gov/files/pdf/Ac4311fn.pdf Here are pages with the listed variants: "Tracking and Impact Prediction" -- http://users2.ev1.net/~mmccants/faq/Chapter-05.txt http://www.satobs.org/seesat/Dec-1998/0346.html http://www.fas.org/spp/military/docops/usspac/r10_5.htm http://www.fas.org/news/reference/lexicon/act.htm "Tracking Impact Prediction" (Mike McCants sent the first one to me earlier today.) -- http://www.au.af.mil/au/awc/awcgate/au-18/au180008.htm http://www.intelsat.com/resources/glossary.aspx?letter=T "Terminal Imaging Radar Tracking and Impact Prediction" (TIP) and "Telemetry Impact Prediction System" (TIPS) -- just the acronyms -- http://www.lib.cas.cz/www/space.40/ACRONYMS/TACRON-T.HTM "Target Impact Prediction" -- just acronym -- http://www.fas.org/news/reference/lexicon/act.htm Another term I saw was "Instantaneous Impact Prediction" (IIP). Still clouds with chances of rain, but the weather may improve here next week. Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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