COSMOS is an astronomical survey designed to probe the formation and evolution of galaxies as a function of cosmic time (redshift) and large scale structural environment. The survey covers a 2 square degree equatorial field with imaging by most of the major space-based telescopes (Hubble, Spitzer, GALEX, XMM, Chandra) and a number of large ground based telescopes (Subaru, VLA, ESO-VLT, UKIRT, NOAO, CFHT, and others). Over 2 million galaxies are detected, spanning 75% of the age of the universe.\n\nObjects in this catalog were selected from the 2005 release of the ground-based photometry catalog, with the criterion that their I-band (auto) magnitude had to be <= 23. The IDs, ra and dec provided in this catalog correspond to those of that 2005 release.