CelesTrak
Software Repository

To aid users of this system in obtaining quality satellite tracking software, the following links are provided as a starting point:

• Satellite Tracking Software by T.S. Kelso

  This is an index to some of the software packages I've developed. These include TrakStar, SGP4 Pascal Library, Pass Scheduler, and Pass Update.

• Satellite Tracking Software Index

  A set of links to descriptions of various satellite tracking software packages for MS-DOS, Windows 3.x, Windows 95/98/NT, Unix, Macintosh, and Palm OS. Where possible, there is a link to a page which provides a description of the package and its features, together with sample screen shots and links to download the software or contact the author. This should be the first place you go to find a satellite tracking program.

• Fundamentals of Astrodynamics and Applications by David Vallado

  The latest information on David Vallado's text and how to order it, including source code and errata.