This page enables users to calculate the main rigidity cut-off for any incoming direction of the particle and for any altitude. The cut-off is calculated in the shifted dipole approximation, with the Stoermer's formula you can find here.

To perform Rigidity Cutoff Calculation please follow this link:

Info

The Earth Magnetic dipole position and inclination, in addition to the magnetic moment value, are updated at November 2016. Rigidity Cutoff and  Geomagnetic coordinates are calculated in the simple shifted-tilted dipole model.

Input Parameters

Input values are

  • geographical latitude
  • geographic longitude
  • altitude from the Earth's surface (in km)
  • Incoming latitude (in deg.)
  • Incoming longitude (in deg.) 

Output 

Ouput values are

  • geomagnetic latitude
  • geomagnetic longitude
  • distance from the center of the dipole
  • rigidity cutoff (in GV)