NGC 6819

Number of stars per data source

	Reference   71 :   11 stars
	Reference  107 :   16 stars
	Reference  110 :   96 stars
	Reference  128 :   23 stars

71: Mermilliod J.-C.; (1988); Positions measured with the Hipad tablet
107: Barnard A.A.; (1931) Yerkes Obs. Publ. 6, 1; Micrometric measures of star clusters
110: Sanders W.L.; (1972) Astron. Astrophys. 19, 155; Membership of the open cluster NGC 6819; 1972A&A....19..155S
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