Download and Install

• download atb.zip (6 MB, including binary DE405 file)
• or atbMain.zip (4.5 MB, without binary DE405 file)
• unzip it to any folder or partition you like
• go to the newly created folder atb and double-click atb.bat (Windows only) or double-click toolbox.jar (you may create a shortcut on your desktop for this)

Updates

Latest version of Astro-Toolbox archive file toolbox.jar

• within folder atb have a look into folder data and check the date of bulletinb.dat (updated monthly). If it is older than one month load the current bulletinb.dat or simply use tool UpdateData in group Updating.
• have a look into folder tle and check the dates of the two line element files (updated daily to weekly). You may load current and/or additional files from celestrak.com by simply using tool UpdateData in group Updating.

DE405

You may download additional binary DE405 files separately and save them to your computer (to directory de405).
1940-1960
1960-1980
1980-2000
2000-2020 (already included in atb.zip)
2020-2040

If you need more please follow the instructions given in tool DE405.