Haffner 15

Number of stars per data source

	Reference  330 :    1 star
	Reference  434 :   13 stars

330: Turner D.G.; (1977) Astron. J. 82, 805; Study of the NGC 2439 association; 1977AJ.....82..805T
434: Vogt N., Moffat A.F.J.; (1972) Astron. Astrophys. Suppl. 7, 133; Southern open clusters I. UBV and Hbeta photometry of 15 clusters between galactic longitudes 231 and 256; 1972A&AS....7..133V