NGC 6520

Number of stars per data source

	Reference  128 :    4 stars
	Reference  470 : 3627 stars

References

 128
Lasker B.M., Russel J.N., Jenkner H., Sturch C.R., McLean B.J., Shara M.M.
(1990) Astron. J. 99, 2019
The HST guide star catalogue, version 1.0
1990AJ.....99.2019L
 470
Carraro G., Mendez R.A., May J., Mardones D.
(2005) Astron. J. 130, 635
The open cluster NGC 6520 and the nearby dark molecular cloud Barnard 86
2005AJ....130..635C