Berkeley 57

Number of stars per data source

	Reference  389 :  179 stars

References

 389

Hasegawa T., Malasan H.L., Kawakita H., Obayashi H., Kurabayashi T., Nakai T., Hyakkai M., Arimoto N.

(2004) Publ. Astron. Soc. Japan 56, 295

New photometric data of old open clusters in the anti-galactic center region

2004PASJ...56..295H