NGC 2420

Number of stars per data source

	Reference   45 :  265 stars
	Reference   61 :  128 stars
	Reference   64 :  697 stars
	Reference   65 :  276 stars
	Reference   86 :  262 stars

45: Cannon R.D., Lloyd C.; (1970) Mon. Not. R. Astron. Soc. 150, 279; The old open cluster NGC 2420; 1970MNRAS.150..279C
61: Sarma M.B.K., Walker M.F; (1962) Astrophys. J. 135, 11; The color-magnitude diagram of NGC 2420; 1962ApJ...135...11S
64: West F.R.; (1967) Astrophys. J. Suppl. 14, 384; Photographic photometry of the galactic cluster NGC 2420; 1967ApJS...14..384W
65: McClure R.D., Forrester W.T., Gibson J.; (1974) Astrophys. J. 189, 409; The old open cluster NGC 2420; 1974ApJ...189..409M
86: McClure R.D., Newell B., Barnes J.V.; (1978) Publ. Astron. Soc. Pacific 90, 170; PDS photometry of the open cluster NGC 2420; 1978PASP...90..170M