Tracking a satellite

Online real-time satellite tracking:
• N2YO http://www.n2yo.com/
• International Space Station only http://www.issfanclub.com/

Free satellite tracking software:
• SimpleSat Look Down http://www.tomdoyle.org/SimpleSatLookDown/
• Gpredict http://gpredict.oz9aec.net/
• Orbitron http://www.uk.amsat.org/?p=9051

Keplerian elements (‘Keps’) provide a mathematical description of a Satellite’s orbit. Satellite tracking software reads the Keplerian elements and provides graphical and/or tabular orbital predictions. Keplerian data are most commonly provided in the AMSAT and the Space Command / NASA Two-Line Element (TLE) format. You can also use the “kep-char” Excel spreadsheet to determine orbital characteristics of a set of Keplerian elements.

NORAD Two-Line Element Set Format http://celestrak.com/NORAD/documentation/tle-fmt.asp

Keplerian Two Line Elements (TLEs) ‘Keps’:
• New satellites launched in past 30 days http://celestrak.com/NORAD/elements/tle-new.txt
• CubeSats http://celestrak.com/NORAD/elements/cubesat.txt
• Amateur radio satellites http://www.amsat.org/amsat/ftp/keps/current/nasa.all