vdB-Hagen 99

Number of stars per data source

	Reference    1 :   20 stars
	Reference   71 :   11 stars
	Reference   94 :    6 stars

References

 1

Egret D.

(1986) Private Communication

Coordinates from SIMBAD (mainly SAO)

 71

Mermilliod J.-C.

(1988)

Positions measured with the Hipad tablet

 94

Larsson-Leander G.

(1957) Stockholms Obs. Ann. 20 no 2

A study of the galactic cluster NGC 1664

1957StoAn..20b...1L