Alternative definitions (1), class: vernacular (0)
Term: SM

This system has its Z axis parallel to the Earth's magnetic dipole axis (positive North) and its Y axis perpendicular to the plane containing the dipole axis and the Earth-Sun line (positive in direction opposite to the Earth's orbital motion). The direction of the geomagnetic field in the outer magnetosphere is well-ordered by this system. It is the preferred system for defining magnetic local time in the outer magnetosphere.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan