Trumpler 20

Number of stars per data source

	Reference  529 : 3965 stars
	Reference  551 : 13040 stars

References

 529

Platais I., Melo C., Fulbright J.P., Kozhurina-Platais V., Figueira P., Barnes S.A., Méndez R.A.

(2008) Mon. Not. R. Astron. Soc. 391, 1482

Trumpler 20 - an old and rich open cluster

2008MNRAS.391.1482P

 551

Carraro G., Costa E., Ahumada J.A.

(2010) Astron. J. 140, 954

Photometric Characterization of the Galactic Star Cluster Trumpler 20

2010AJ....140..954C