Trumpler 21

Number of stars per data source

	Reference  274 :  368 stars

References

 274

Giorgi E.E., Baume G., Vazquez R.A., Feinstein A.

(2001) Rev. Mex. Astron. Astrofis. 37, 15

CCD UBVI photometry and polarimetry in the open cluster Trumpler 21

2001RMxAA..37...15G