Debris Assessment Software
The Debris Assessment Software (DAS) utility will be periodically updated by NASA to reflect the latest understanding of the man-made debris environment in Earth orbit. Users are encouraged to check this page regularly for news and updates, and to report problems with the DAS software to John N. Opiela.
DAS 3.0 makes several improvements in DAS without changing its overall functionality. Changes address revisions in the NASA Standard 8719.14B, as well as usability improvements. As with previous versions, DAS’s inclusion of ORDEM 3.0 leads to lengthy run-times for many mission profiles. DAS 3.0 is optimized for Microsoft Windows 7/8/10.
Although approved for public release, NASA regulations require that a Software Usage Agreement must be obtained to acquire a copy of the NASA-developed software, DAS 3.0. To begin the process, please press the Request Now! button in the Software Catalog. Included in the installer and also available for separate download are the DAS User's Guide and Software Release Notes. The current DAS solar flux table is available here.
- Request DAS and complete the Software User Agreement.
- Download and run the DAS 3.0 Software Installer.
- Whenever a new solar flux file is released (quarterly), download the file solarflux_table.txt from this page. The file date is in the header information. Place the file in the DAS installed data\ directory, replacing the existing file. You may rename the file to solarflux_table.dat, but this is not required for DAS 3.0.