King 13

Number of stars per data source

	Reference  510 : 3139 stars
	Reference  540 : 1114 stars

510: Maciejewski G., Niedzielski A.; (2007) Astron. Astrophys. 467, 1065; CCD BV survey of 42 open clusters; 2007A&A...467.1065M
540: Glushkova E.V., Zabolotskikh M.V., Koposov S.E., Spiridonova O.I., Vlasyuk V.V., Rastorguev A.S.; (2010) Astron. Lett. 36, 14; Photometry of the poorly studied galactic open star clusters King 13, King 18, King 19, King 20, NGC 136, and NGC 7245; 2010AstL...36...14G