NGC 663

Number of stars per data source

	Reference    1 :   11 stars
	Reference    4 :   24 stars
	Reference   15 :  368 stars
	Reference   33 :    6 stars
	Reference  304 :  346 stars
	Reference  312 :  875 stars

References

 1

Egret D.

(1986) Private Communication

Coordinates from SIMBAD (mainly SAO)

 4

Hoag A.A., Johnson H.L., Iriarte B., Mitchell R.I., Hallam K.L., Sharpless S.

(1961) Publ. Us. Nav. Obs. XVII part VII, 347

Photometry of stars in galactic cluster fields

 15

Moffat A.F.J., Vogt N.

(1974) Veroeff. Astr. Inst. Univ. Bochum no 2

Photographische UBV-Helligkeiten in 14 jungen Sternhaufen der nordlichen Milchstrasse

 33

Egret D.

(1986) Private communication

Coordinates from SIMBAD (other than SAO)

 304

Pigulski A., Kopacki G., Kolaczkowski Z.

(2001) Acta Astron. 51, 159

A CCD search for variable stars of spectral B in the northern hemisphere open clusters. IV. NGC 663

2001AcA....51..159P

 312

Pigulski A., Kopacki G., Kolaczkowski Z.

(2001) Astron. Astrophys. 376, 144

The young open cluster NGC 663 and its Be stars

2001A&A...376..144P