GM Ser in 2MASS RCB: star. Bright in 2MASS. USNO0675.15257064 180835.810 -150402.13 (2000.0) 15.3 19.5 2MASS 180835.811 -150401.64 (2000.0) 8.210 7.027 6.374 180835.8 -150402 (2000.0) SERGM * RCB: 12.0 14.0 I - - - R0/IBVS985A