NGC 1647

Number of stars per data source

	Reference  350 :   45 stars
	Reference 1341 :   28 stars

350: Turner D.G.; (1992) Astron. J. 104, 1865; Galactic clusters with asociated cepheid variables. II. NGC 1647 and SZ Tauri; 1992AJ....104.1865T
1341: Hoag A.A., Johnson H.L., Iriarte B., Mitchell R.I., Hallam K.L., Sharpless S.; (1961) Publ. US. Nav. Obs. 17, 343; Photometry of stars in galactic cluster fields; 1961PUSNO..17..343H