NGC 7209

Number of stars per data source

	Reference   61 :    3 stars
	Reference   64 :    6 stars
	Reference  398 :    1 star

61: Svolopoulos S.N.; (1961) Astrophys. J. 134, 612; Spectral classification in some open clusters; 1961ApJ...134..612S
64: Svolopoulos S.N.; (1962) Astrophys. J. 136, 788; Spectral classifications in nine open clusters; 1962ApJ...136..788S
398: Tomasella L., Munari U.; (1998) Astron. Astrophys. 335, 561; Spectroscopic orbit of the ex-eclipsing binary SS Lacertae in the young open cluster NGC 7209; 1998A&A...335..561T