  Stellar kinematic groups (SKG) are kinematically coherent groups of stars
that share a common origin. We have compiled (Montes et al. 1999; 2000) a
sample of late-type stars of previously established members and possible new
candidates to different young SKG (Local Association (20 - 150 Myr), Ursa Mayor
group (300 Myr),
  Hyades supercluster (600 Myr),
  IC 2391 supercluster (35 Myr) and Castor Moving Group (200 Myr)). In order to
better understand the origin of these young SKG, and to be able to identify
late-type stars members of the classical and the recently identified SKG, we
also need to study the kinematic properties of nearby young open clusters and
star forming regions. With this aim we have taken the most recent data
available in the literature (including astrometric data from Hipparcos
Catalogue) of the nearby young open clusters, OB associations, T associations,
and other associations of young stars as TW Hya. We use these data to calculate
their Galactic space motions (U, V, W) and space coordinates (X, Y, Z) and
study their possible association with the different SKG as well as with the
young flattened and inclined Galactic structure known as the Gould Belt.
