NGC 1901

Number of stars per data source

	Reference   77 :    2 stars
	Reference   80 :   19 stars

References

 77

Philip A.G.D., Philip K.D.

(1973) Astrophys. J. 179,855

Four-color Observations of early-type stars. I. Standards and secondary standards

1973ApJ...179..855P

 80

Philip A.G.d

(1973) Astrophys. J. 180,421

Four-color Observations of early-type stars. II. The new open cluster in line of sight with the Large Magellanic Cloud

1973ApJ...180..421P