  We present the study of dynamical status of the globular cluster NGC 1851. A
combination of multiwavelength space and ground-based data sets are used for
the present analysis. In order to select the genuine cluster members, we used
the astro-photometric data available from HST and GAIA-DR2 catalogs. The BSS
radial distribution of the cluster is plotted from the center of the cluster to
the outskirts. The radial distribution of BSS shows a central peak, followed by
a dip at the intermediate radii (rmin ~ 90'') and a rising trend in the
outskirts. We also estimated A+rh parameter as 0.391 +/- 0.006 to validate the
findings of the radial distribution study. On the basis of the minima in the
BSS radial distribution and the value of A+rh parameter, we conclude that NGC
1851 belongs to Family II classification and is an intermediate dynamical state
cluster.

Astrophysics of Galaxies;Solar and Stellar Astrophysics