NGC 188

Number of stars per data source

	Reference   92 :    6 stars
	Reference  444 :   68 stars
	Reference  471 : 5301 stars
	Reference  485 :    3 stars

92: Upgren A.R., Mesrobian W.S., Kerridge S.J.; (1972) Astron. J. 77, 74; Proper motions, membership, and stellar content of the old cluster NGC 188; 1972AJ.....77...74U
444: Dinescu D.I., Girard T.M., van Altena W.F., Yang T.G., Lee Y.W.; (1996) Astron. J. 111, 1205; A proper-motion membership study of the old open cluster NGC 188; 1996AJ....111.1205D
471: Platais I., Platais V.K., Mathieu R.D., Girard T.M., van Altena W.F.; (2003) Astron. J. 126, 2922; WIYN open cluster study. XVII. Astrometry and membership to V = 21 in NGC 188; 2003AJ....126.2922P
485: Baumgardt H., Dettbarn C., Wielen R.; (2000) Astron. Astrophys. Suppl. 146, 251; Absolute proper motions of open clusters. I. Observational data; 2000A&AS..146..251B