NGC 6871

Number of stars per data source

	Reference   33 :    9 stars
	Reference  112 :   21 stars
	Reference  122 :    1 star

33: Cohen H.L.; (1969) Astron. J. 74, 1168; A photoelectric Hbeta distance modulus of the open cluster NGC 6871; 1969AJ.....74.1168C
112: Crawford D.L., Barnes J.V.; (1974) Astron. J. 79, 623; Four-color and Hbeta photometry for open clusters. IX. NGC 6871; 1974AJ.....79..623C
122: Crawford D.L.; (1975) Publ. Astron. Soc. Pacific 87, 481; Four-color and Hbeta photometry of O-type stars; 1975PASP...87..481C