NGC 6819

Number of stars per data source

	Reference  107 :   36 stars
	Reference  128 :   23 stars

107: Barnard A.A.; (1931) Yerkes Obs. Publ. 6, 1; Micrometric measures of star clusters
128: Lasker B.M., Russel J.N., Jenkner H., Sturch C.R., McLean B.J., Shara M.M.; (1990) Astron. J. 99, 2019; The HST guide star catalogue, version 1.0; 1990AJ.....99.2019L