NGC 225

Number of stars per data source

	Reference    1 :    4 stars
	Reference    4 :   27 stars
	Reference  113 :    9 stars
	Reference  128 :   30 stars
	Reference  137 :  289 stars

1: Egret D.; (1986) Private Communication; Coordinates from SIMBAD (mainly SAO)
4: Hoag A.A., Johnson H.L., Iriarte B., Mitchell R.I., Hallam K.L., Sharpless S.; (1961) Publ. Us. Nav. Obs. XVII part VII, 347; Photometry of stars in galactic cluster fields
113: Lasker B.M., et al; (1988) Astrophys. J. Suppl. 68, 1; The Guide Star Photometric Catalog. I.; 1988ApJS...68....1L
128: Lasker B.M., Russel J.N., Jenkner H., Sturch C.R., McLean B.J., Shara M.M.; (1990) Astron. J. 99, 2019; The HST guide star catalogue, version 1.0; 1990AJ.....99.2019L
137: Lattanzi M.G., Massone G., Munari U.; (1991) Astron. J. 102, 177; Memberships and CM diagrams of young open clusters: I. NGC 225; 1991AJ....102..177L