Observing Satellites Visual Satellite Observer's Home Page General information on observing visible satellites Information on Satellites The following sites offer information about the satellites themselves, such as their purpose, mass, dimensions etc. Jonathan's Space Report Issued about once a week, it provides information on all recently launched satellites. Mark Wade's Encyclodedia Astronautica Information on most satellites in Earth orbit and beyond NASA Human Spaceflight Pages Information on the ISS and Space Shuttle missions JPL's Basics of Space Flight An online training module to help you grasp some of the concepts of deep space missions. Sources of Satellite Orbital Elements Space-Track Run by the US Department of Defense, responsible for making unclassified orbital elements available to the public. This organisation has taken over the task from the OIG which was run by NASA. You will need to get an account to access the data. Mike McCants' Elements A good page containing elements of satellites organised by category, and stored in ZIPped files for easy downloading. Also contains elements for classified satellites, and a single large file with the most recent elements of most satellites. Celestrak WWW Historical data for a selection of satellites Space Agencies NASA National Aeronautics and Space Administration DLR The German Aerospace Research Center ESA The European Space Agency UKSA The UK Space Agency CNES The French Space Agency ASI The Italian Space Agency JAXA The Japanese Space Agency IKI Russian Space Research Institute CSA Canadian Space Agency ISRO Indian Space Research Organisation Partner Companies INSYEN AG   Follow @heavensabovecom 開発かいはつ、管理かんり : Chris Peat, Heavens-Above GmbH メールを送信そうしんする前まえにFAQ をお読よみください。Imprint. 翻訳ほんやく : lightNext, yyamada