Semiempirical Shell Model Masses with Magic Number Z=126 for Translead   Elements with N smaller or equal to 126
  A semiempirical shell model mass equation based on magic number Z=126 and applicable to translead elements with N smaller or equal to 126 is presented. For alpha decay energies the equation is shown to have a high predictive power and an rms deviation from the data of about 100 keV. The rms deviations for masses and other mass differences are between about 200 and 300 keV. 
S. Liran, A. Marinov and N. Zeldes (The Racah Institute of Physics,   The Hebrew University of Jerusalem)