NGC 1647

Number of stars per data source

	Reference    2 :   89 stars
	Reference   71 :   92 stars
	Reference  191 :  331 stars

References

 2

Hoag A.A., Johnson H.L., Iriarte B., Mitchell R.I., Hallam K.L., Sharpless S.

(1961) Publ. Us. Nav. Obs. XVII part VII, 347

Photometry of stars in galactic cluster fields

 71

Hassan S.M.

(1972) Mem. Soc. Astron. Italiana 43, 279

Three colour photometry of NGC 1647

1972MmSAI..43..279H

 191

Francic S.P.

(1989) Astron. J. 98, 888

Mass function for eight nearby galactic clusters

1989AJ.....98..888F