NGC 1807

Number of stars per data source

	Reference  305 :    1 star
	Reference  711 :    1 star
	Reference  821 :   14 stars

305: Yoss K.M., Karman R.A., Hartkopf W.I.; (1981) Astron. J. 86, 36; The space velocities of 393 G and K stars in the + 15 degrees Selected Area zones; 1981AJ.....86...36Y
711: Eggen O.J.; (1976) Publ. Astron. Soc. Pacific 88, 426; A sample of old-disk-population red giants; 1976PASP...88..426E
821: Purgathofer A.; (1964) Ann. Univ. Sternw. Wien 26 no 2; Dreifarben Photometrie in offenen Sternhaufen sowie in zwei Sternfelden in Cygnus