Berkeley 81

Number of stars per data source

	Reference  162 : 3301 stars

References

 162
Sagar R., Griffiths W.K.
(1998) Mon. Not. R. Astron. Soc. 299, 1
BVI CCD photometry of the distant open star clusters Berkeley 81, Berkeley 99, NGC 6603 and NGC 7044
1998MNRAS.299....1S