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GeoMagSphere Online calculator (version 1.8) website currently supported within the space radiation environment activities of ASIF (ASI - Italian Space Agency -Supported Irradiation Facilities) [year,month]:


P. Bobik, G. Boella, M.J. Boschini, M. Gervasi, D. Grandi, K. Kudela, S. Pensotti, P.G. Rancoita, Magnetospheric transmission function approach to disentangle primary from secondary cosmic ray fluxes in the penumbra region. Journal of Geophysical Research (Space Physics) 111, 5205, (2006). doi = 10.1029/2005JA011235.

M.J. Boschini, C. Consolandi, S. Della Torre, M. Gervasi, D. Grandi, S. Haino, G. La Vacca, S. Pensotti, P.G. Rancoita, D. Rozza, M. Tacconi, Geomagnetic Backtracing: A comparison of Tsyganenko 1996 and 2005 External Field models with AMS-02 data. Proceedings of the 33rd International Cosmic Ray Conference (ICRC2013), July 2-9 2013 (Rio de Janeiro, Brazil), arXiv: 1307.5199.

D. Grandi, B. Bertucci, M.J. Boschini, M. Crispoltoni, S. Della Torre, F. Donnini, M. Duranti, D. D'urso, E. Fiandrini, M. Gervasi, M. Graziani, G. La Vacca, F. Nozzoli, S. Pensotti, C. Pizzolotto, P.G. Rancoita, D. Rozza, M. Tacconi, V. Vitale, M. Zannoni, Trajectory reconstruction in the Earth Magnetosphere using TS05 model and evaluation of geomagnetic cutoff in AMS-02 data. Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), July 30 - August 6, 2015 (The Hague, The Netherlands), PoS(ICRC2015)116.


History of Major Change


  • Web program and documentation online.
Oct. 2016  
  • Magnetopause Models
Nov. 2017  
  • Radiation Belts and Trapped Particles
March 2019  
  • Calculators (Time/lenght - Energy/Rigidity - Larmor Radius)
May 2021  
  • Adiabatic Invariants
July 2021  
  • IGRF 2021
Dec. 2021  
  • Joomla 4
May 2022



  • Backtracing code updated to 2025
June 2022  
  • Stoermer Calculator updated to 2025
July 2022