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Tracking spacecraft from your computer SPACEFLIGHT NOW Updated: 09:40 a.m., December 17, 2000 The standardized 2-line elements below can be used by satellite tracking programs to plot the path of a spacecraft in the night sky, to predict when specified satellites might be visible - or within radio line of sight - from one's home location or to follow a space shuttle over the course of its mission. These elements will be updated daily during shuttle missions and every few days between flights. Links to Macintosh and PC satellite tracking software and on-line tracking systems are provided below. The J-Track java application provided by NASA's Marshall Space Flight Center provides realtime maps showing the current locations of various U.S. spacecraft while the Heavens Above site allows the user to specify viewing locations and/or satellites of interest. The CelesTrak page provides up-to-date 2-line elements for hundreds of spacecraft. The following two-line elements are provided by David Ransom and David Cottle.
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