NGC 1647

Number of stars per data source

	Reference    4 :    5 stars
	Reference   33 :    1 star
	Reference  128 :  219 stars

References

 4

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

 33

Egret D.

(1986) Private communication

Coordinates from SIMBAD (other than SAO)

 128

Lasker B.M., Russel J.N., Jenkner H., Sturch C.R., McLean B.J., Shara M.M.

(1990) Astron. J. 99, 2019

The HST guide star catalogue, version 1.0

1990AJ.....99.2019L