Pleiades

Number of stars per data source

	Reference    1 :    2 stars
	Reference   15 :   22 stars
	Reference   94 :    8 stars

1: McClure R.D.; (1976) Astron. J. 81, 182; Standard stars for DDO photometry; 1976AJ.....81..182
15: Goodenough D.G.; (1970) Bull. American Astron.Soc. 2, 318; Six colour photometry of galactic clusters; 1970BAAS....2..318G
94: Castelaz M.W., Persinger T., Stein J.W., Prosser J., Powell H.D.; (1991) Astron. J. 102, 2103; Photometry of astrometric reference stars; 1991AJ....102.2103C