Alternative definitions (0), class: vernacular (0)
Term: SAS

This system is a fundamental reference system for most spinning spacecraft since the S/C - Sun meridian can
easily be determined on board using a narrow-slit sun sensor. Thus a spacecraft-fixed instrumental system
has only a longitudinal offset with respect to SAS linear in time.
+Z-axis: spacecraft spin axis vA, right-handed orientation.
+Y-axis: cross-product between +Z-axis and S/C - Sun vector vS.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan