What are some open research questions related to the concept of the principal axis or its extensions?

Toutatis is rotating in a long-axis mode characterized by periods of 5.41 days (rotation about the long axis) and 7.35 days (average for long-axis precession), ... Dec 30, 2020 ... The coordinate system for which the inertia tensor is diagonal is called the Principal axis system which has three perpendicular principal axes. Determine principal axes of each frame determined by diagonalization of the inertial matrix from the coordinates of the specified atoms. Sep 24, 2021 ... We have now understood the concept of Principal Axes and Principal Moment of Inertias and why are they important. Click the Inertia / G tab to display the principal axes about which inertia is calculated. The A1, A2 and A3 axes correspond to the principal axes represented ... This program reads a .pdb file, computes principal axes and produces a .pml PyMoL script to view axes. Note that only C-alpha atoms are read. Jun 27, 2024 ... Typically, multiple or even most of the 20 axes arrive at the same principle axis (z′), but since the σsym(G,Q)-function contains many local ... Sep 22, 2024 ... σd (dihedral): dihedral planes are parallel to the principal axis and bisecting two C2' axes. Inversion and Inversion Center (i). The inversion ... Asteroid (5247) Krylov is spinning in a short axis mode characterized by rotation and precession periods of 368.7 and 67.27 h, respectively. Feb 22, 2023 ... We introduce a graph construction scheme that constructs the adjacency matrix A using unsupervised and supervised information.