NGC 663

Number of stars per data source

	Reference   64 :    8 stars
	Reference  203 :    3 stars
	Reference  206 :    4 stars
	Reference  207 :    2 stars
	Reference  284 :    1 star
	Reference  427 :    1 star
	Reference  731 :    1 star
	Reference  862 :    1 star

References

 64
Svolopoulos S.N.
(1962) Astrophys. J. 136, 788
Spectral classifications in nine open clusters
1962ApJ...136..788S
 203
Farnsworth A.H.
(1955) Astrophys. J. Suppl. 2, 123
Stellar spectra and colors in Milky Way regions in Cassiopeia
1955ApJS....2..123F
 206
Hiltner W.A.
(1956) Astrophys. J. Suppl. 2, 389
Photometric, polarization and spectrographic observations of O and B stars
1956ApJS....2..389H
 207
Hoag A.A., Applequist L.
(1965) Astrophys. J. Suppl. 12, 215
Distance moduli of open clusters
1965ApJS...12..215H
 284
McCuskey S.W., Pesch P., Snyder G.A.
(1974) Astron. J. 79, 597
The space distribution and radial velocities of some early-type stars in the Perseus spiral arm
1974AJ.....79..597M
 427
Jensen K.S.
(1981) Astron. Astrophys. Suppl. 45, 455
Spectral classification in the MK system of 167 northern HD stars
1981A&AS...45..455J
 731
Hardorp J., Rohlfs K., Slettebak A., Stock J.
(1959) Astr. Abh. Hamb. Sternw. Bergedorf
Luminous stars in the northern Milky Way I - VI
 862
Boulon J., Duflot M., Fehrenbach C., Duflot A., Rebeirot E., Petit M.
(1960) Publ. Obs. Haute-Provence 4 no 34
La mesure des vitesses radiales au prisme objectif. IX. 3eme liste de vitesses radiales determinees au prisme objectif a vision directe