NGC 663
Number of stars per data source
Reference 1 : 6 stars
Reference 15 : 368 stars
Reference 33 : 4 stars
Reference 91 : 3 stars
Reference 304 : 344 stars
Reference 312 : 751 stars
References
- 1
- Egret D.
- (1986) Private Communication
- Coordinates from SIMBAD (mainly SAO)
-
- 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)
-
- 91
- Hopmann J., Haidrich K.
- (1959) Mitt. Univ. Sternw. Wien 10, 129 no 8
- Der galaktische Sternhaufen NGC 663
- 1959MiWie..10..129H
- 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