NGC 2509

Number of stars per data source

	Reference  340 :   96 stars
	Reference  478 : 2995 stars

References

 340

Sujatha S., Babu G.S.D.

(2003) Bull. Astron. Soc. India 31, 9

Study of open cluster NGC 2509

2003BASI...31....9S

 478

Carraro G., Costa E.

(2007) Astron. Astrophys. 464, 573

Photometry of the five marginally studied open clusters Collinder 74, Berkeley 27, Haffner 8, NGC 2509, and VdB-Hagen 4

2007A&A...464..573C