We present UBVRI photometry of stars in the field of the intermediate-age open cluster NGC 559 .
By determining the stellar membership probabilities derived through a photometric and kinematic study of the cluster , we identify the 22 most probable cluster members .
These are used to obtain robust cluster parameters .
The mean proper motion of the cluster is \mu _ { x } = -3.29 \pm 0.35 , \mu _ { y } = -1.24 \pm 0.28 mas yr ^ { -1 } .
The radial distribution of the stellar surface density gives a cluster radius of 4 ^ { \prime } .5 \pm 0 ^ { \prime } .2 ( 3.2 \pm 0.2 pc ) .
By fitting solar metallicity stellar isochrones to the colour-colour and colour-magnitude diagrams , we find a uniform cluster reddening of E ( B - V ) = 0.82 \pm 0.02 .
The cluster has an age of 224 \pm 25 Myr and is at a distance of 2.43 \pm 0.23 kpc .
From the optical and near-infrared two-colour diagrams , we obtain colour excesses in the direction of the cluster E ( V - K ) = 2.14 \pm 0.02 , E ( J - K ) = 0.37 \pm 0.01 , and E ( B - V ) = 0.76 \pm 0.04 .
A total-to-selective extinction of R _ { V } = 3.5 \pm 0.1 is found in the direction of the cluster which is marginally higher than the normal value .
We derive the luminosity function and the mass function for the cluster main sequence .
The mass function slope is found to be -2.12 \pm 0.31 .
We find evidence of mass segregation in this dynamically relaxed cluster .