IC 4756

Number of stars per data source

	Reference  191 :  110 stars
	Reference  326 :  158 stars
	Reference  370 :   92 stars

References

 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
 370
Zacharias N., Urban S.E., Zacharias M.I., Wycoff G.L., Hall D.M., Monet D.G., Rafferty T.J.
(2004) Astron. J. 127, 3043
The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2)
2004AJ....127.3042Z