The '''Java Astrodynamics Toolkit (JAT)''' is aan [[open-source software|open-source]] [[Library (computing)|library]] of software components for use in spaceflight applications written in [[Java (programming language)|Java]] or [[Matlab]]. It provides features useful when solving problems in [[astrodynamics]], space mission design, and the navigation, guidance and control of spacecraft.<ref>{{Cite web |url=http://aaaprod.gsfc.nasa.gov/TEAS/JAT.pdf |title=Archived copy |access-date=2008-01-13 |archive-url=https://web.archive.org/web/20090320121708/http://aaaprod.gsfc.nasa.gov/teas/JAT.pdf |archive-date=2009-03-20 |url-status=dead }}</ref>
The software, used by [[NASA]], is a major collaboration by the [[University of Texas]] Computer Science department for use by professional computer [[astronomers]], and is used by [[NASA]]. As of 2008 it was one of the most advanced astronomical toolkits available.
