Trumpler 22

Number of stars per data source

	Reference   22 :   11 stars
	Reference   50 :    1 star

22: Lindoff U.; (1968) Ark. Astr. 4, 493; The open clusters Tr 22 and Ho 17; 1968ArA.....4..493L
50: Cannon A.J., Pickering E.C.; (1918-1924), Ann. Obs. Harvard Coll. Obs. 91 to 99 and 100; Henry Draper catalogue and extension