How do I download Keplerian elements for InstantTrack?
It’s hard to answer that question briefly for all cases, because there are many different sources of Keplerian elements and many different programs you might use to download them. If you have access to the Web, the easiest way might be to go to the AMSAT Keplerian Elements page and download the file (NASA or AMSAT format) using your browser. The exact procedure depends on the browser, but in most browsers you can click on the file to bring it up on the screen, then select Save As from the File menu. In some older browsers, you may need to select “Load to disk” before you click on the file, then un-select “Load to disk” to continue. It is very important that you save the file in plain text format and not in HTML or any other funny format. This option may be well-hidden in some programs. You can also FTP the files from FTP.AMSAT.ORG in the /amsat/keps/current directory. These are the exact same files you’ll get from the Web page. Use ASCII transfer mode. You can have the Keplerian elemen
