EM Per in 2MASS EM Per is very bright on 2MASS: 2MASS: 2MASS 024127.892 +553126.58 (2000.0) 6.649 5.594 5.163 EM Per & IRAS: 024127.1 +553121 (2000.0) IRAS02378+5518 1.066 0.669 0.400L 1.721L 46% 024127.1 +553121 (2000.0) SSC02378+5518 1.066 0.669 0.400L 1.721L 024127.9 +553126 (2000.0) PEREM * L 14.5 16.3 P - - - R1/PER1