Check out firstelc.exe, firstfit.exe, firstorb.exe and fitelem.exe at this site ftp://ftp.physics.ox.ac.uk/pub/sat/programs/ibmpc/ Ron Lee >Anyone know where we might find software for calculating TLEs based on >observations? > >It would be best if the software worked on Macs since that's what we've >got here, but we can get access to an IBM type machine if needed. > >Thanks, all! > >Patrick :-) >-- >Patrick Wiggins, Hansen Planetarium, SLC, UT, USA >email: w@apeleon.net >WWW: web.state.ut.us/bbs/space >snail mail: 15 S. State St., SLC, UT 84111-1590 >voice: 801.531-4952 >fax: 801.531-4948 > > >