  The concept of pseudomagnitude was recently introduced by Chelli et al.
(2016), to estimate apparent stellar diameters using a strictly observational
methodology. Pseudomagnitudes are distance indicators, which have the
remarkable property of being reddening free. In this study, we use Hipparcos
parallax measurements to compute the mean absolute pseudomagnitudes of solar
neighbourhood dwarf stars as a function of their spectral type. To illustrate
the use of absolute pseudomagnitudes, we derive the distance moduli of $360$
Pleiades stars and find that the centroid of their distribution is
$5.715\pm0.018$, corresponding to a distance of $139.0\pm1.2$\,pc. We locate
the subset of $\sim 50$ Pleiades stars observed by Hipparcos at a mean distance
of $135.5\pm3.7$\,pc, thus confirming the frequently reported anomaly in the
Hipparcos measurements of these stars.
