NGC 457

Number of stars per data source

	Reference   71 : 3874 stars
	Reference  326 :   24 stars

71: Mermilliod J.-C.; (1988); Positions measured with the Hipad tablet
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