Abstract
UBV photoelectric photometry for 175 stars in the eld of the southern open cluster NGC 2323, supple- mented by DDO photometry of 5 probable giants, is pre- sented. The analysis of the photometric data yields 109 probable members; one of them being a red giant, and 3 possible members. The reddening across the cluster is slightly variable and the mean value E(B V )=0 :25. The apparent cluster distance modulus is 10.62, corre- sponding to a distance of 940 pc. The age, determined by tting isochrones with core overshooting, turns out to be 100 20 Myr. Other fundamental cluster parameters are also determined. NGC 2323 appears not to be physically connected to the CMa OB1 association.
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