NGC 6664

Number of stars per data source

	Reference   42 :    1 star

References

 42
Kraft R. P., Camp D. C., Fernie J. D., Fujita C., Hughes W. T.
(1958) Astrophys. J. 129, 50
Line profiles for classical cepheid SV Vulpeculae and for supergiants Beta Aquarii and 9 Pegasi
1958ApJ...129...50K