  We present an updated catalog of sources detected by the Mikhail Pavlinsky
ART-XC telescope aboard the Spektrum-Roentgen-Gamma (SRG) observatory during
its all-sky survey. It is based on the data of the first four and the partially
completed fifth scans of the sky (ARTSS1-5). The catalog comprises 1545 sources
detected in the 4-12 keV energy band. The achieved sensitivity ranges between
$\sim 4\times 10^{-12}$ erg s$^{-1}$ cm$^{-2}$ near the ecliptic plane and
$\sim 7\times 10^{-13}$ erg s$^{-1}$ cm$^{-2}$ near the ecliptic poles, which
is a $\sim$30-50% improvement over the previous version of the catalog based on
the first two all-sky scans (ARTSS12). There are $\sim 130$ objects, excluding
the expected contribution of spurious detections, that were not known as X-ray
sources before the SRG/ART-XC all-sky survey. We provide information, partly
based on our ongoing follow-up optical spectroscopy program, on the
identification and classification of the majority of the ARTSS1-5 sources
(1463), of which 173 are tentative at the moment. The majority of the
classified objects (964) are extragalactic, a small fraction (30) are located
in the Local Group of galaxies, and 469 are Galactic. The dominant classes of
objects in the catalog are active galactic nuclei (911) and cataclysmic
variables (192).
