Berkeley 17

Number of stars per data source

	Reference   79 :  551 stars
	Reference  160 :  619 stars
	Reference  455 : 1329 stars
	Reference  465 : 1981 stars

79: Kaluzny J.; (1994) Acta Astron. 44, 247; Photometric study of the extremely old open cluster Berkeley 17; 1994AcA....44..247K
160: Phelps R.L.; (1997) Astrophys. J. 483, 826; Berkeley 17: the oldest open cluster?; 1997ApJ...483..826P
455: Krusberg Z.A.C., Chaboyer B.; (2006) Astron. J. 131, 1565; UBVI CCD Photometry of the Old Open Cluster Berkeley 17; 2006AJ....131.1565K
465: Bragaglia A., Tosi M., Andreuzzi G., Marconi G.; (2006) Mon. Not. R. Astron. Soc. 368, 1971; BVI photometry of the very old open cluster Berkeley 17; 2006MNRAS.368.1971B