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Comprehensive spectral analyses of the Galactic Wolf-Rayet stars of thenitrogen sequence (i.e.\ the WN subclass) have been performed in a previouspaper. However, the distances of these objects were poorly known. Distanceshave a direct impact on the "absolute" parameters, such as luminosities andmass-loss rates. The recent Gaia Data Release (DR2) of trigonometric parallaxesincludes nearly all WN stars of our Galactic sample. In the present paper, weapply the new distances to the previously analyzed Galactic WN stars andrescale the results accordingly. On this basis, we present a revised catalog of55 Galactic WN stars with their stellar and wind parameters. The correlationsbetween mass-loss rate and luminosity show a large scatter, for thehydrogen-free WN stars as well as for those with detectable hydrogen. Theslopes of the $\log L - \log \dot{M}$ correlations are shallower than foundpreviously. The empirical Hertzsprung-Russell diagram (HRD) still shows thepreviously established dichotomy between the hydrogen-free early WN subtypesthat are located on the hot side of the zero-age main sequence (ZAMS), and thelate WN subtypes, which show hydrogen and reside mostly at cooler temperaturesthan the ZAMS (with few exceptions). However, with the new distances, thedistribution of stellar luminosities became more continuous than obtainedpreviously. The hydrogen-showing stars of late WN subtype are still found to betypically more luminous than the hydrogen-free early subtypes, but there is arange of luminosities where both subclasses overlap. The empirical HRD of theGalactic single WN stars is compared with recent evolutionary tracks. Neitherthese single-star evolutionary models nor binary scenarios can provide a fullysatisfactory explanation for the parameters of these objects and their locationin the HRD.

The Galactic WN stars revisited. Impact of Gaia distances on fundamental stellar parameters