NGC 1647
Number of stars per data source
Reference 64 : 8 stars
Reference 207 : 2 stars
Reference 314 : 23 stars
References
- 64
- Svolopoulos S.N.
- (1962) Astrophys. J. 136, 788
- Spectral classifications in nine open clusters
- 1962ApJ...136..788S
- 207
- Hoag A.A., Applequist L.
- (1965) Astrophys. J. Suppl. 12, 215
- Distance moduli of open clusters
- 1965ApJS...12..215H
- 314
- Massey P., Johnson J.
- (1993) Astron. J. 105, 980
- Massive stars near Eta Carinae: the stellar content of Tr 14 and Tr 16
- 1993AJ....105..980M