Berkeley 9

Number of stars per data source

	Reference  541 : 1050 stars
	Reference  548 : 1280 stars

References

 541
Lata S., Pandey A.K., Kumar B., Bhatt H., Pace G., Sharma S.
(2010) Astron. J. 139, 378
A Deep UBVRI CCD Photometry of Six Open Star Clusters in the Galactic Anticenter Region
2010AJ....139..378L
 548
Subramaniam A., Carraro G., Janes K.A
(2010) Mon. Not. R. Astron. Soc. 404, 1385
Optical photometry and basic parameters of 10 unstudied open clusters
2010MNRAS.404.1385S