Pismis 21

Number of stars per data source

	Reference  263 :  290 stars

References

 263
Piatti A.E., Claria J.J.
(2001) Astron. Astrophys. 370, 931
On the stellar content of the open clusters Melotte 105, Hogg 15, Pismis 21 and Ruprecht 140
2001A&A...370..931P