Berkeley 7

Number of stars per data source

	Reference   86 :  722 stars
	Reference  561 : 1533 stars

References

 86
Phelps R.L., Janes K.A.
(1994) Astrophys. J. Suppl. 90, 31
Young open cluster as probes of the star formation process. I. An atlas of open cluster photometry
1994ApJS...90...31P
 561
Lata S., Pandey A.K., Sharma S., Bonatto Ch., Yadav R.K.
(2014) New Astron. 26, 77
Photometric study of five open star clusters
2014NewA...26...77L