Fluorescence excitation spectra due to the A(2)Sigma, v'=0<--X(2)Pi, v "=0 transition of gaseous nitric oxide were measured in magnetic fields up to 10 T. Zeeman effects on rotational lines of the P-21 and P-1 branches were observed. Transition energy and intensity were calculated using Hund's case (a) basis set to assign observed lines. Calculation results reproduced observed spectra well and all lines were completely assigned.