NGC 663
Number of stars per data source
Reference 273 : 477 stars
Reference 290 : 1099 stars
Reference 438 : 2532 stars
References
- 273
- 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
- 290
- 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
- 438
- Pandey A.K., Upadhyay K., Ogura K., Sagar R., Mohan V., Mito H., Bhatt H.C., Bhatt B.C.
- (2005) Mon. Not. R. Astron. Soc. 358, 1290
- Stellar contents of two young open clusters: NGC 663 and 654
- 2005MNRAS.358.1290P