  The International Liquid Mirror Telescope (ILMT) is a 4-meter class survey
telescope. It achieved its first light on 29$^{\rm th}$ April 2022 and is now
undergoing the commissioning phase. It scans the sky in a fixed \ang{;22;} wide
strip centred at the declination of $+$\ang{29;21;41.4} and works in \emph{Time
Delay Integration (TDI)} mode. We present a full catalog of sources in the ILMT
strip derived by crossmatching \textit{Gaia} DR3 with SDSS DR17 and PanSTARRS-1
(PS1) to supplement the catalog with apparent magnitudes of these sources in
$g, r$, and $i$ filters. These sources can serve as astrometric calibrators.
The release of Gaia DR3 provides synthetic photometry in popular broadband
photometric systems, including the SDSS $g, r$, and $i$ bands for $\sim$220
million sources across the sky. We have used this synthetic photometry to
verify our crossmatching performance and, in turn, create a subset of the
catalog with accurate photometric measurements from two reliable sources.
