Orbital Models and Element Sets

Orbital Models

• Models for Propagation of NORAD Element Sets (PDF)

Satellite Tracking Software

• CelesTrak WWW Software Repository
• SatTrack
• AGI-STK, Satellite Tool Kit
• More Satellite Prediction Software
• LogSat
• InstantTrack or QuickTrack available from AMSAT
• J-Track (NASA)

Orbital Elements Sets

• CelesTrak WWW by Dr TS Kelso
• Spacelink: Tracking Elements
• SEDS sat elements etc...
• TLEs via Analytical Graphics

Orbital Models tutorials

• Keplerian Elements Tutorial on AMSAT
• More Sources of orbital data
• Kepler's laws
• Kepler's laws in Java applets
• Basics of Space Flight (JPL)

Miscellaneous

• Xephem on FTP
• Xephem home page

Sites for satellite watchers

• CalSky, Celestial Observer
• Visual Satellite Observer's Home Page
• Satellite Predictions, for Mir and Iridium Flares.
• Satellite Tracking Prediction Gateway
• Visibility Predictions for the Russian Space Station Mir

Wim Bakker