NGC 957

Number of stars per data source

	Reference  191 :  254 stars
	Reference  326 :   22 stars
	Reference  541 : 14759 stars

191: Skiff B.; (1998) Priv. Comm.; Coordinates from the GSC and USNO-A1.0 catalogues in the field of open clusters
326: Hog E., Fabricius C., Makarov V.V., Urban S., Corbin T., Wycoff G., Bastian U., Schwekendiek P., Wicenec A.; (2000) Astron. Astrophys. 357, L27; The Tycho-2 Catalogue; 2000A&A...355L..27H
541: Bukowiecki L., Maciejewski G., Bykowski W., Georgiev T., Boeva S., Kacharov N., Mihov B., Latev G., Ovcharov E., Valcheva A.; (2009) Open European Journal on Variable Stars, 112, 1; Search For Variable Stars in the Field of The Young Open Cluster NGC 957; 2009OEJV..112....1B