CCD UBV Photometry and Kinematics of the Open Cluster NGC 225
  We present the results of CCD $UBV$ photometric and spectroscopic
observations of the open cluster NGC 225. In order to determine the structural
parameters of NGC 225, we calculated the stellar density profile in the
cluster's field. We estimated the probabilities of the stars being physical
members of the cluster using the existing astrometric data. The most likely
members of the cluster were used in the determination of the astrophysical
parameters of the cluster. We calculated the mean radial velocity of the
cluster as $V_{r}=-8.3\pm 5.0$ km s$^{-1}$ from the optical spectra of eight
stars in the cluster's field. Using the U-B vs B-V two-colour diagram and UV
excesses of the F-G type main-sequence stars, the reddening and metallicity of
NGC 225 were inferred as $E(B-V)=0.151\pm 0.047$ mag and $[Fe/H]=-0.11\pm 0.01$
dex, respectively. We fitted the colour-magnitude diagrams of NGC 225 with the
PARSEC isochrones and derived the distance modulus, distance and age of the
cluster as $\mu_{V}=9.3\pm 0.07$ mag, d=585$\pm$20 pc and $t=900\pm 100$ Myr,
respectively. We also estimated the galactic orbital parameters and space
velocity components of the cluster and found that the cluster has a slightly
eccentric orbit of $e=0.07\pm 0.01$ and an orbital period of $P_{orb}= 255\pm
5$ Myr.
