
The standard HD catalog does not contain proper motions, parallaxes, or radial
velocities, all of which are found in the Catalog::Star{} nested class.  The HD
catalog is used only for secondary identification in the NPOI software, not
precise astrometry.  Using Vizier, the SAO catalog can be queried for J2000.0
positions as well as proper motions.  I keep only the SAO catalog stars that
have HD catalog entries.  I will set the parallaxes and radial velocities to
zero, since they are required only for precise astrometry.

2014 Jan 04 - Nick Elias, OAM Solutions
