Corrections and Comments on the Multipole Moments of Axisymmetric   Electrovacuum Spacetimes
  Following the method of Hoenselaers and Perj\'{e}s we present a new corrected and dimensionally consistent set of multipole gravitational and electromagnetic moments for stationary axisymmetric spacetimes. Furthermore, we use our results to compute the multipole moments, both gravitational and electromagnetic, of a Kerr-Newman black hole. 
Thomas P. Sotiriou, Theocharis A. Apostolatos