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Extrasolar planets found by gravitational microlensing often requireassumptions on the source star distance and relative proper motion. Only in afew cases has it been possible to confirm these findings with space-basedobservations or high-resolution follow-up. 20 planetary microlensing events canbe positionally cross-matched with the second Gaia data release containingparallax and proper motion measurements. In this work we subject allmicrolensing planets listed in NASA's Exoplanet Archive to an initialconsistency check by comparing them with Gaia data release 2 measurements. Theresulting list is supposed to serve as a reference for the observers in themicrolensing community. Gravitational microlensing can constrain the physicalparameters lens mass and lens distance based on fit parameters, such as theevent timescale, the microlensing parallax, and the source star crossing time.If some of these parameters are not available, one needs to resort to indirectmeans of assessing the events, often involving a Galactic model. In this work,we seek to make an initial assessment of those parameters solely based on GaiaDR2. We find that 19 of 20 planetary events are consistent within $2\,\sigma$of their published lens and source distances, whereas 9 of them agree withtheir published source magnitude within $0.2\,\mathrm{mag}$. The only eventthat does not seem to be compatible with the reported distance, iswell-constrained and provides plausible distance estimates.

Microlensing planets in the light of the second data release of Gaia