The file master.dir in this directory is a complete listing of the space-
related programs, data, and documentation available for download from the
Celestial BBS, 205/*409-9280*, which operates at 300/1200/2400/4800/9600 bps,
24 hours/day.  Due to the extensive nature of these files, it is impossible
for me to maintain two sources, with the exception of the weekly postings
of two-line element sets (tle.*) and these key programs:

  * spacetrk.zip (LaTeX documentation and FORTRAN source code for the NORAD
        orbital models needed for using the two-line element sets),
  * sat-db13.zip (a complete database of all payloads launched into orbit),
  * sgp4-pl2.zip (a library of Turbo Pascal units to implement SGP4/SDP4),
  * trakstr2.zip (an implementation of sgp4-pl2 to output satellite ECI
        position, subpoint, look angles, and right ascension/declination),
  * passupdt.zip (a package for quickly and easily updating two-line element
        sets), and
  * unzip (a Sun executable for unzipping these programs).

More information on the first five files is available in the file master.dir.

There is no access charge for using the Celestial BBS and the file master.dir
should serve to give you a pretty good idea of the value of the material
available there.

                                     - Dr TS Kelso
                                       Adjunct Professor of Space Operations
                                       Air Force Institute of Technology
                                       SYSOP, Celestial BBS