  We present results of new photometric observations of the contact binary
system \astrobj{HI Pup} as well as the radial velocity curve of the system.
Time series multicolour photometry was obtained at the South African
Astronomical Observatory (SAAO) using the 1-m Cassegrain Telescope. We applied
a simultaneous solution to the $BVRI$ light and radial velocity curves in order
to determine the physical parameters of the system. From an analysis of the new
multicolour data, the physical parameters were found to be $M_1=1.22M_{\odot}$,
$M_2=0.23M_{\odot}$, $R_1=1.44R_{\odot}$, $R_2=0.67R_{\odot}$,
$L_1=3.3L_{\odot}$, $L_2=0.7L_{\odot}$. Our solution confirms that HI Pup has a
typical A--type W UMa binary system characteristics.

Solar and Stellar Astrophysics