King 9

Number of stars per data source

	Reference   88 : 2058 stars
	Reference  549 : 6627 stars

References

 88
Phelps R.L., Janes K.A., Montgomery K.A.
(1994) Astron. J. 107, 1079
Development of the galactic disk: a search for the oldest open clusters
1994AJ....107.1079P
 549
Janes K.A., Hoq S.
(2011) Astron. J. 141, 92
A Quantitative Analysis of Distant Open Clusters
2011AJ....141...92J