Radial velocity (cz) with respect to the Local Group: vlg
The velocity corrected to the centroid of the Local Group vlg
has been adopted following Yahil et al. (1977):
vlg = v + 295 sin(al2) cos(ab2) - 79.1 cos(al2) cos(ab2) - 37.6 sin (ab2)
Where al2 and ab2 are the Galactic coordinates (longitude and latitude) and
v is the radial (cz) velocity in km/s given as parameter v
vsgr is available for 137010 galaxies
(May 2003 version of the database).
Other velocities in the database are:
vrad,
vopt,
v,
vgsr,
vvir,
v3k.