King 6

Number of stars per data source

	Reference  303 :  236 stars
	Reference  495 :  708 stars

303: Ann H.B., Lee S.H., Sung H., Lee M.G., Kim S.-L., Chun M.-Y., Jeon Y.-B., Park B.-G., Yuk I.-S.; (2002) Astron. J. 123, 905; BOAO photometric survey of galactic open clusters. II. Physical parameters of 12 open clusters; 2002AJ....123..905A
495: Maciejewski G., Niedzielski A.; (2007) Astron. Astrophys. 467, 1065; CCD BV survey of 42 open clusters; 2007A&A...467.1065M