NGC 1027

Number of stars per data source

	Reference   27 :   49 stars
	Reference   50 :    1 star

27: Clasen M.-Ch.; (1938) Astron. Nach. 264, 33; Farbenindizes in den offenen Sternhaufen NGC 1027 und IC 1805 und den Kapteynschen Eichfeldern 26, 35 und 40; 1938AN....264...33C
50: Cannon A.J., Pickering E.C.; (1918-1924), Ann. Obs. Harvard Coll. Obs. 91 to 99 and 100; Henry Draper catalogue and extension