Catalogue details XZ 25535 = SAO 187012 = ZC 2697 RA = 18 35 21.3302 PM = 0.00205s Dec = -20 50 25.591 PM = -0.0014" Mv = 6.49, Mb = 6.77, Mr = 6.34 Spectrum F0 Dia: .0002" [Estimated] V4190 Sgr, 6.44 to 6.48, V, Type DSCTC AAVSO Variable star entry Variable identifier Type Max Min Ph Epoch Period V4190 Sgr DSCTC 6.44 6.48 V