HYPERLEDA

We present the new catalog of principal galaxies (PGC2003). It constitutes the framework of the HYPERLEDA database that supersedes the LEDA one, with more data and more capabilities. The catalog is still restricted to confirmed galaxies, i.e. about one million galaxies, brighter than ≈18 B-mag. In order to provide the best possible identification for each galaxy we give: accurate coordinates (typical accuracy better than 2 arcsec), diameter, axis ratio and position angle. Diameters and axis ratios have been homogenized to the RC2 system at the limiting surface brightness of , using a new method, the EPIDEMIC method. In order to provide the best designation for each galaxy, we collected the names from 50…

• NA
  National Aeronautics and Space Administration
• CI
  California Institute of Technology
• JP
  Jet Propulsion Laboratory